Tugay forests of the Tigrovaya Balka Nature Reserve
Country
Tajikistan
Inscribed in
2023
Criterion
(ix)
The conservation outlook for this site has been assessed as "significant concern" in the latest assessment cycle. Explore the Conservation Outlook Assessment for the site below. You have the option to access the summary, or the detailed assessment.
This property is located between the Vakhsh and Panj rivers in southwestern Tajikistan. The Reserve includes extensive riparian tugay ecosystems, the sandy Kashka-Kum desert, the Buritau peak, as well as the Hodja-Kaziyon mountains. The property is composed of a series of floodplain terraces covered by alluvial soils, comprising tugay riverine forests with very specific biodiversity in the valley. The tugay forests in the reserve represent the largest and most intact tugay forest of this type in Central Asia, and this is the only place in the world where the Asiatic poplar tugay ecosystem has been preserved in its original state over an area of this size. © UNESCO
Summary
2025 Conservation Outlook
Finalised on
11 أكتوبر 2025
Significant concern
Current state and trend of VALUES
Low Concern
Overall THREATS
Overall PROTECTION and MANAGEMENT
Full assessment
Description of values
Outstanding example of continuous ecological and biological processes in the evolution and development of desert-tugay biocenoses
Criterion
(ix)
The natural complex of Tigrovaya Balka is an outstanding example of continuous ecological and biological processes taking place in the evolution and development of desert-tugay biocenoses and their characteristic plant and animal communities. The reserve hosts various ecological units, not only tugay lowland forests, but also steppe and semi-desert areas and their various ecotones where many stenoeceous species of flora are found. The reserve’s forests, sandy and saline semi-deserts, piedmont semi-savannas, and various wetlands are dynamically adapting to changes in the hydrological regime of the territory. The best remaining example of floodplain ecosystem was shaped primarily by dynamic flow of water and sediments and dispersal of biological species along the Vakhsh River (Rogun HPP ESIA, 2014). There are several habitats in the reserve: tugay riverine forests, Vaksh and Panj river channels, oxbow freshwater bodies and marshes, semi-deserts, takirs and solonchaks (World Heritage Committee, 2023).
The complex features water-resistant and thermophilic, salt-tolerant trees and shrubs such as the Asiatic Poplar or Blue Poplar, the Dzhida or Oleaster, the Multiramose Tamarix. Wildlife includes Bukhara Deer (Cervus hanglu bactrianus), whose population in the reserve may exceed 300; Goitered Gazelle (Gazella subgutturosa), Desert Monitor (Varanus griseus), Tajik subspecies of the Common Pheasant (Phasianus cochicus bianchii), and many waterfowl, completing the largely intact tugay ecosystem.
The complex features water-resistant and thermophilic, salt-tolerant trees and shrubs such as the Asiatic Poplar or Blue Poplar, the Dzhida or Oleaster, the Multiramose Tamarix. Wildlife includes Bukhara Deer (Cervus hanglu bactrianus), whose population in the reserve may exceed 300; Goitered Gazelle (Gazella subgutturosa), Desert Monitor (Varanus griseus), Tajik subspecies of the Common Pheasant (Phasianus cochicus bianchii), and many waterfowl, completing the largely intact tugay ecosystem.
Largest and most intact tugay forest of this type in Central Asia
Criterion
(ix)
The 24,100 ha of tugay forests in the reserve represent the largest and least disturbed tugay forest of this type in Central Asia (World Heritage Committee, 2023; IUCN, 2023). The tugay floodplain ecosystem is indivisible from vast riverine fluvial systems of Vakhsh and Panj on which dynamics its long-term well-being depends (Rogun HPP ESIA 2014; Simonov, 2024). While heavily regulated Vakhsh River supports most of the tugay floodplain area, the larger Panj River, which belongs to remaining 25 free-flowing rivers of the world of more than 1000 kilometers in length, is the most important as a river with still natural flow dynamics still capable of shaping\reproducing tugay floodplain habitats (IUCN, 2023).
Associated wildlife
Tugay habitats, riparian forest and wetlands are endemic to Central Asian semi-arid and arid climates, though highly fragmented and degraded due to deforestation, grazing, land conversion, irrigation and dam construction. The nomination dossier lists important species as Bukhara Deer (Cervus hanglu bactrianus), the Goitered Gazelle (Gazella subgutturosa), the Striped Hyena (Hyaena hyaena), and the Persian Leopard (Panthera pardus tulliana) (State Party of Tajikistan, 2022), although there is no recent documented evidence of the presence of the latter carnivore species (e.g., Ostrowski et al. 2022). However, the limited size of the property does not provide for an adequate representation of these wide-ranging species (IUCN, 2023).
Vakhsh River within the UNESCO World Heritage property and beyond is one of the key critical habitats for several endangered species of fish (also regional endemics): Large Amu-Darya shovelnose sturgeon -Pseudoscaphirhynchus kaufmanni (CR) , Small Amu-Darya shovelnose sturgeon - Pseudoscaphirhynchus hermanni (CR), Pike asp -Aspiolucius esocinus (VU), Aral barbel - Luciobarbus brachycephalus (VU ) , Chu Sharpray -Capoetobrama kuschakewitschi (EN), which are also listed as rare and endangered in the Red Book of the Republic of Tajikistan (2017) (Mirzoev, 2018; 2010; Artaev et al., 2025; Safarov, 2012). Ship sturgeon (Acipenser nudiventris) mentioned in supplementary materials to nomination has likely gone extinct recently (as well as Aral Salmon (Salmo aralensis)) (Artaev et al., 2025) due to river connectivity being blocked by hydropower dams. The first three species are are dependent on floodplain ecosystem processes including a high sediment load and variable flows, a decline in which likely led to decrease of their numbers in regulated Vakhsh River. Vakhsh River most affected by human pressures is the only point of sporadic ichtyological monitoring within the TB nature reserve, while much more intact Panj has not been surveyed for decades. Sales of freshly caught Pseudoscaphirhynchus sp. at markets in Afghanistan along Panj River were registered by a WCS expedition in 2023-24 (IUCN Consultation, 2025).
Vakhsh River within the UNESCO World Heritage property and beyond is one of the key critical habitats for several endangered species of fish (also regional endemics): Large Amu-Darya shovelnose sturgeon -Pseudoscaphirhynchus kaufmanni (CR) , Small Amu-Darya shovelnose sturgeon - Pseudoscaphirhynchus hermanni (CR), Pike asp -Aspiolucius esocinus (VU), Aral barbel - Luciobarbus brachycephalus (VU ) , Chu Sharpray -Capoetobrama kuschakewitschi (EN), which are also listed as rare and endangered in the Red Book of the Republic of Tajikistan (2017) (Mirzoev, 2018; 2010; Artaev et al., 2025; Safarov, 2012). Ship sturgeon (Acipenser nudiventris) mentioned in supplementary materials to nomination has likely gone extinct recently (as well as Aral Salmon (Salmo aralensis)) (Artaev et al., 2025) due to river connectivity being blocked by hydropower dams. The first three species are are dependent on floodplain ecosystem processes including a high sediment load and variable flows, a decline in which likely led to decrease of their numbers in regulated Vakhsh River. Vakhsh River most affected by human pressures is the only point of sporadic ichtyological monitoring within the TB nature reserve, while much more intact Panj has not been surveyed for decades. Sales of freshly caught Pseudoscaphirhynchus sp. at markets in Afghanistan along Panj River were registered by a WCS expedition in 2023-24 (IUCN Consultation, 2025).
Assessment information
Direct threats inside of the nominated property, e.g. grazing, poaching, fire, change of protection status, etc., are considered low by official assessments but logging for firewood, grazing and poaching still persist at considerable scale and are not well documented. Threats from outside, e.g. flow regulation by cascade of hydropower dams and water withdrawal\pollution from irrigation related to agriculture in the upper watershed pose high threats to the tugay forest ecosystem. Site managers are limited to mitigation measures inside the boundaries and have no control over water management beyond. Planning decisions at basin-level, such as designing and implementing sufficient environmental flows are urgently needed to prevent imminent degradation.
Dams & Water Management/Use
(Altered hydrological regime of Vakhsh River by upstream dams)
Outside site
The most serious threat and long-lasting impact is the altered hydrological regime of Vakhsh River due to dams and water offtake for irrigation. Before the regulation of the river flow in late 1960s the valley would flood in summer, an important ecosystem requirement. Tugay forests are now supported by channeled surface water and underground flows only. A number of researchers point out that the lack of floods and adjacent land use will intensify two processes in the reserve: desertification and salinization, which, ultimately, will lead to the replacement of tugay vegetation by solonchak and desert, that is, to the destruction of the existing biogeocenoses (State Party of Tajikistan, 2022; Committee for Environmental Protection under the Government of the Republic of Tajikistan, 2024).
Water-borne & other effluent Pollution
(Unregulated discharge of wastewater from agricultural lands)
Outside site
The territory of the Tigrovaya Balka Nature Reserve is almost completely surrounded by agriculture fields located on higher terraces which largely encroach into the reserve's buffer zone. The Tugay water system now depends not only on the Vakhsh River, which previously formed the regime of floodplain terraces, but also on the numerous irrigation facilities of the surrounding agricultural farms, which impact the dynamics of both surface and underground runoff to an extent that needs to be researched. An outcome of the discharge of waste water from agriculture is the formation of a secondary water regime on the territory of the reserve, which may negatively affect the entire natural complex.
The unregulated discharge of waste water from agricultural lands and the associated release of pesticides into the reservoirs of the reserve represent threats to biodiversity. Currently, the effects of pesticides on the Tugay ecosystem are unknown but many of these chemical residues are notoriously dangerous to aquatic life globally, and pose a threat to the aquatic food chain (State Party of Tajikistan, 2022; Committee for Environmental Protection under the Government of the Republic of Tajikistan 2024). A recent study detected a decline of aquatic plant biodiversity in the unique tugay landscape of the Tigrovaya Balka Nature Reserve (Volkova, et al., 2024).
The unregulated discharge of waste water from agricultural lands and the associated release of pesticides into the reservoirs of the reserve represent threats to biodiversity. Currently, the effects of pesticides on the Tugay ecosystem are unknown but many of these chemical residues are notoriously dangerous to aquatic life globally, and pose a threat to the aquatic food chain (State Party of Tajikistan, 2022; Committee for Environmental Protection under the Government of the Republic of Tajikistan 2024). A recent study detected a decline of aquatic plant biodiversity in the unique tugay landscape of the Tigrovaya Balka Nature Reserve (Volkova, et al., 2024).
Annual & Perennial Non-Timber Crops
(Lack of flood-flushing and intensive irrigation increasing soil salinity)
Outside site
Until the early 1960s, spring-summer floods repeatedly occurred on most parts of Tigrovaya Balka Nature Reserve. Over the past 50-60 years, as a result of the construction of five reservoir cascade resulting from five dams (Nurek, Baipazinskoye, Sangtuda 1, Sangtuda 2, Golovnoye), the flow regime of the Vakhsh river has changed dramatically.
At present, there are no floods, which affects the water mineralization. A significant part of the runoff of the Vakhsh (about 1/3) is used for irrigation and 1/5 of the river runoff in the lower reaches is formed by wastewater, which leads to an increase in mineralization and pollution of river waters. The lakes in the reserve vary greatly throughout the year in terms of the size of the water area and water mineralization. The brine mostly contains chlorine and sodium, pH-7.5-7.7 (State Party of Tajikistan, 2022; Committee for Environmental Protection under the Republic of Tajikistan, 2024).
At present, there are no floods, which affects the water mineralization. A significant part of the runoff of the Vakhsh (about 1/3) is used for irrigation and 1/5 of the river runoff in the lower reaches is formed by wastewater, which leads to an increase in mineralization and pollution of river waters. The lakes in the reserve vary greatly throughout the year in terms of the size of the water area and water mineralization. The brine mostly contains chlorine and sodium, pH-7.5-7.7 (State Party of Tajikistan, 2022; Committee for Environmental Protection under the Republic of Tajikistan, 2024).
Dams & Water Management/Use
(Change of sediment flow due to the effect of upstream dams )
Inside site
, Widespread(15-50%)
Outside site
There have been third party concerns about the impact from hydropower dams, and especially Nurek HPP reservoir on sediments. There are reports that the Vakhsh hydropower cascade decreased turbidity/sediment transport by 7-11 times, which altered riverbed and conditions for spawning and migration of shovelnose sturgeons, pike and likely many other native species of aquatic fauna (Rivers without Boundaries, 2024). Drastic change in sedimentation regime also may lead to various geomorphological changes in the floodplain, e.g. deepening of riverbed, which may in turn provoke lowering of groundwater levels on which floodplain vegetation depends and/or reduce influx of new material (sand, loam, silt) onto floodplain surfaces.
Hunting, Collecting & Controlling Terrestrial Animals, Logging, Harvesting & Controlling Trees, Fishing, Harvesting & Controlling Aquatic Species
(Illegal resource use by local communities)
Inside site
, Extent of threat not known
Outside site
Various illegal forms of resource use by local communities are still widespread (Safarov, 2012; Kvartalnov, 2011), with firewood extraction and grazing being most readily documented recently (CEPF 2023; Brown et al. 2022; GIZ 2020). Fresh evidence also found in social media. Several projects have been launched by various stakeholders to reduce the reliance of the local population on firewood and other resources from within the reserve. Shovelnose sturgeon is being actively poached as a source of medicine, allegedly to improve human fertility (IUCN Consultation, 2025).
Invasive Non-Native/ Alien Species
(Invasive species of fish (and very likely plants and birds))
Inside site
, Extent of threat not known
Outside site
A review of fish fauna (Artaev et al., 2025) shows rapid intrusion of several non-native fish species in Tajikistan. Vakhsh river as a human-modified southern watercourse is especially susceptible to such invasions. Snakehead (Channa argus) is one of the most known examples of invasive species that infested waterbodies of Vakhsh floodplain and negatively impacts local species (Mirzoev, 2007). However, given substantial modification of Tugay groves, it is important to check whether similar invasions happen in other groups. Recently ornithologists stated in interviews that native bird species are in decline, likely, due to competition with an invasive species (Muratov, 2024).
Climate change is likely to place further demands for water withdrawals from the Vakhsh River, exacerbating the current issues with the water regime. In the absence of a comprehensive climate change vulnerability assessment of the protected area one can only speculate on the effects of climate change on the Trigrovaya Balka ecosystem. There are likely to be significant but presently no one can tell the magnitude and time scale of these effects according to various temperature/precipitation scenarios. Construction of further hydropower plants on the Vakhsh River and Panj River will likely affect the current flood dynamics and perpetuate an unfavourable water regime detrimental for long-term survival of tugay ecosystem.
Changes in Precipitation & Hydrological Regime
(Further changes to water regime induced by climate change)
Inside site
, Throughout(>50%)
Outside site
Climate change is likely to place further demands for water withdrawals from the Vakhsh River, exacerbating the current issues with the water regime. Preliminary analysis of conservation threats and possible solutions has been undertaken by GIZ project (GIZ 2020; Brown M,, et al. 2022). Warming of climate is increasing competition for water and this will create a difficult dilemma of increasing water supply to irrigation, using water to fill new Rogun Reservoir (requires 1.2 cubic kilometers annually during 16 years of filling), and\or devoting more water to sustain environmental flows in Tigrovaya Balka Nature Reserve. Thus, competition for water in Vakhsh basin will likely increase, exacerbating already existing threats from low groundwater levels, salinization, lack of floods, concentrated pollution from farm affluent, increase in water temperatures, etc.
Renewable Energy
(Further hydropower developments)
Outside site
Construction of the Rogun HPP reservoir with active volume of 10 cubic kilometers may increase the risks of further curtailment of any floods on the Vakhsh River, which is mentioned in project documentation as additional advantage for downstream economies (Simonov, 2024). Unless artificial floods are designed and implemented as a part of Rogun HPP Project, the new dam will disrupt the current flow regime, degrading the tugay ecosystem due to absence of floods and distorted groundwater dynamics. Local engineering measures (periodic dredging of oxbows) implemented in 2009-2023 by WWF and other actors are only a temporary and partial solution for watering tugay ecosystem, which does not solve problems of salinization, tugay poplar propagation, etc. (Normatov 2016; Brown M. et al. 2022; CABAR 2023).
The Government of Tajikistan has declared that the construction of a cascade of hydropower dams on Panj River together with Afghanistan is a long-term development priority. 4000 MW Dashujum HPP has been the most commonly proposed dam (Rogun HPP ESIA, 2014; Asia-Plus, 2024). Impacts would be similar to those from the Vakhsh Hydropower Cascade and will regulate presently natural flow dynamics, depriving the eastern part of the property of natural floods and influx of sediments.
The Government of Tajikistan has declared that the construction of a cascade of hydropower dams on Panj River together with Afghanistan is a long-term development priority. 4000 MW Dashujum HPP has been the most commonly proposed dam (Rogun HPP ESIA, 2014; Asia-Plus, 2024). Impacts would be similar to those from the Vakhsh Hydropower Cascade and will regulate presently natural flow dynamics, depriving the eastern part of the property of natural floods and influx of sediments.
Involvement of stakeholders and rightsholders, including indigenous peoples and local communities, in decision-making processes
The property is a State Nature Reserve since 1938, with economic activities being prohibited. Accordingly, there are no people living inside the boundaries other than rangers at five border control stations. Entrance to the nature reserve is by permission only. According to the nomination dossier, up to 1,000 permanent residents are present in the buffer zone (State Party of Tajikistan, 2022).
Overall, and based on the information provided to IUCN and evident to the field mission, there do not appear to be any concerns in relation to traditional rights by communities. Nevertheless, the field mission recommended that the capacity of the Nature Reserve would be enhanced with a special focus on public participation and public relations (IUCN, 2023).
The inscription decision (World Heritage Committee, 2023) requests the State Party to enhance management capacity of the Nature Reserve with special focus on community engagement.
Overall, and based on the information provided to IUCN and evident to the field mission, there do not appear to be any concerns in relation to traditional rights by communities. Nevertheless, the field mission recommended that the capacity of the Nature Reserve would be enhanced with a special focus on public participation and public relations (IUCN, 2023).
The inscription decision (World Heritage Committee, 2023) requests the State Party to enhance management capacity of the Nature Reserve with special focus on community engagement.
Legal framework
The property has the legal status of a Nature Reserve since its establishment in 1938. The Reserve
is subject to the Law of the Republic of Tajikistan on Specially Protected Natural Areas of 2011, defining it as “a land or the water body withdrawn completely from economic activity, intended for preserving and studying of typical and unique natural complexes, gene pool of plants and animals, carrying out monitoring of dynamics of natural processes and the phenomena” (IUCN, 2023). Local government authorities have no jurisdiction, except in the buffer zone (so-called “Protective Zone”). According to law, the purpose of the buffer zone of the nominated property is to prevent or mitigate negative impacts on the property (IUCN, 2023). A 2021 order allows for “limited agricultural activities” but prohibits most other land uses in the buffer zone of the property, adding a layer of protection to the property.
is subject to the Law of the Republic of Tajikistan on Specially Protected Natural Areas of 2011, defining it as “a land or the water body withdrawn completely from economic activity, intended for preserving and studying of typical and unique natural complexes, gene pool of plants and animals, carrying out monitoring of dynamics of natural processes and the phenomena” (IUCN, 2023). Local government authorities have no jurisdiction, except in the buffer zone (so-called “Protective Zone”). According to law, the purpose of the buffer zone of the nominated property is to prevent or mitigate negative impacts on the property (IUCN, 2023). A 2021 order allows for “limited agricultural activities” but prohibits most other land uses in the buffer zone of the property, adding a layer of protection to the property.
Governance arrangements
The Tigrovaya Balka Nature Reserve is a subdivision of the State Committee for Environmental Protection under the Government of the Republic of Tajikistan and operates in accordance with the Law of the Republic of Tajikistan On Specially Protected Natural Territories of 2014. The status of the protected area manager and his lines of reporting, involvement of other important local stakeholders, as well as the junior levels of governance between the rangers and their leader could be improved (IUCN Consultation, 2025).
Integration into local, regional and national planning systems (including sea/landscape connectivity)
Information provided by the State Party related to regional planning relates only to education, science and tourism (State Part of Tajikistan, 2022). Water management and hydropower development plans for Vakhsh (and Panj) rivers are not designed to accomodate environmental flow requirements of the Tigrovaya Balka tugay ecosystem and water-dependent species. The first recommentation for designing "artificial floods" was made by Tajik Academy of Sciences in 1975 and repeated regularly after, but despite multiple official decisions such environmental flow regime has never been designed and implemented. Most existing high-level planning documents on water management and hydropower development in Upper amu Darya River basin (Panj and Vakhsh) do not incorporate safeguards that could ensure preservation of Tigrovaya Balka.
Boundaries
The property is located in the districts of Kabodien (right bank of Vakhsh) and Dusti (left bank of Vakhsh) of Khatlon Region. The boundary of the property is clearly defined and adequate.
The current alignment of the Nature Reserve was established in 2008, after a part of the Nature Reserve was converted into agricultural land. The establishment of the Nature Reserve and frequent changes to its size reflect the development in the region, especially regarding agriculture and related infrastructure, e.g. railway and irrigation channels. In spite of these changes over more than 80 years, the property maintains an adequate level of integrity within its current boundaries (IUCN, 2023).
The 17,672-hectare buffer zone of the property is intended to minimize impacts from agricultural development from areas outside the reserve boundaries. Within the buffer zone hunting, fishing, tree cutting, and “irrigation works that lead to changes in the hydrological regime and drainage of swamps” are forbidden, limiting agricultural activity around the property. A reported 50% reduction in water consumption for irrigation since 2016 suggests that regulation in the buffer zone and adjacent areas is at least partially addressing the greatest threat to the integrity of the reserve (IUCN, 2023).
The current alignment of the Nature Reserve was established in 2008, after a part of the Nature Reserve was converted into agricultural land. The establishment of the Nature Reserve and frequent changes to its size reflect the development in the region, especially regarding agriculture and related infrastructure, e.g. railway and irrigation channels. In spite of these changes over more than 80 years, the property maintains an adequate level of integrity within its current boundaries (IUCN, 2023).
The 17,672-hectare buffer zone of the property is intended to minimize impacts from agricultural development from areas outside the reserve boundaries. Within the buffer zone hunting, fishing, tree cutting, and “irrigation works that lead to changes in the hydrological regime and drainage of swamps” are forbidden, limiting agricultural activity around the property. A reported 50% reduction in water consumption for irrigation since 2016 suggests that regulation in the buffer zone and adjacent areas is at least partially addressing the greatest threat to the integrity of the reserve (IUCN, 2023).
Overlapping international designations
The property is entirely encompassed by the Lower Pyandj River Ramsar Site (No. 1084).
Implementation of World Heritage Committee decisions and recommendations
Inscribed in 2023, the State Party has not yet been required to submit any reporting on Committee recommendations and requests. The inscription decision (citation) “encourages the States Parties of Tajikistan and Afghanistan to coordinate and secure water flows from the Panj River to maintain the hydrological regime of the property;” and “requests the State Party to a) secure and maintain a natural hydrological regime for the property with sufficient provision of water to the property to maintain its Outstanding Universal Value, b) assess regularly the management effectiveness of the property, including research on the hydrological regime of the Vakhsh River in relation to the property, c) enhance management capacity of the Nature Reserve with special focus on community engagement.
While an Environmental and Social Impact Assessment (ESIA) for downstream impacts of Rogun HPP was carried out in 2014 and 2023 and a Cumulative Impact Assessment (CIA) and a Biodiversity Management Plan, was developed by the Government of Tajikistan, including an evaluation of the biodiversity in areas downstream from
the Rogun dam, third party reports state that these developments are not sufficient to protect the Tigrovaya Balka floodplain and aquatic ecosystems. According to various NGOs (Rivers without Boundaries, 2024) the Rogun HPP project’s area of impact (AOI) considered in the ESIA is too narrow and should be extended to Tigrovaya Balka Nature Reserve and further to the Amu Darya Delta to assess multiple flow regimes resulting from various possible modes of Rogun reservoir operation in the context of the whole Vakhsh Hydropower Cascade management as well as full spectrum of impacts on the freshwater biodiversity, wildlife populations, ecosystem processes (services) of the river, river-related socio-economic activities (e.g. irrigation) and others.
While an Environmental and Social Impact Assessment (ESIA) for downstream impacts of Rogun HPP was carried out in 2014 and 2023 and a Cumulative Impact Assessment (CIA) and a Biodiversity Management Plan, was developed by the Government of Tajikistan, including an evaluation of the biodiversity in areas downstream from
the Rogun dam, third party reports state that these developments are not sufficient to protect the Tigrovaya Balka floodplain and aquatic ecosystems. According to various NGOs (Rivers without Boundaries, 2024) the Rogun HPP project’s area of impact (AOI) considered in the ESIA is too narrow and should be extended to Tigrovaya Balka Nature Reserve and further to the Amu Darya Delta to assess multiple flow regimes resulting from various possible modes of Rogun reservoir operation in the context of the whole Vakhsh Hydropower Cascade management as well as full spectrum of impacts on the freshwater biodiversity, wildlife populations, ecosystem processes (services) of the river, river-related socio-economic activities (e.g. irrigation) and others.
Climate action
The nomination dossier refers to climate change but only in general (State Party of Tajikistan, 2022) and the management plan makes no mention of it at all (State Party of Tajikistan, 2021). The Government of Tajikistan and World Bank provide justification to further dam construction in Vakhsh River basin as climate mitigation and adaptation measure, e.g. protection from increasing floods, however these developments poses a serious threat to the World Heritage property.
Management plan and overall management system
Operational protection and preservation of the Outstanding Universal Value is carried out by reserve managers according to medium-term management plans. Thus, the “Management Plan of the state reserve Tigrovaya Balka and the adjacent territory for the period 2022-2026” defines specific measures for protection, scientific research, monitoring of the state of conservation, environmental education and interaction with the local population, the timing of their implementation, actors, sources of funding and expected results. The management plan covers a wider landscape and addresses threats from lands adjacent to the Nature Reserve. The Tigrovaya Balka Nature Reserve is funded from the state budget (Committee for Environmental Protection). The nomination dossier indicates that the budget of the reserve is growing (State Party of Tajikistan, 2022). In 2024, the Committee for Environmental Protection of the Government of Tajikistan commissioned and approved a new wetland-focused management plan for the Tigrovaya Balka State Nature Reserve 2024–2028. A good achievement in itself, but it is not clear why multiple plans are needed to manage a Tugay ecosystem that is largely dependent on wetlands and water regimes. There appears to be a risk of redundancy or possible management conflict. Furthermore, this new plan highlights that there is currently little or no standardized monitoring efforts for a number of biophysical parameters that could inform adaptive management of the area. It is therefore unclear how the management plans are being translated into management actions.
Law enforcement
The site is subject to a strict protection and management regime, supported by a functional buffer zone (IUCN, 2023), however local people question whether illegal fishing is controlled effectively (IUCN Consultation, 2025).
Sustainable finance
The reserve budget for 2021 was $56,089, of which $46,309 is from the state, with $ 37,987 going to staff salaries. Only $ 4,151 was allocated to conservation activities, with the balance to maintenance and administrative costs. The nomination dossier (State Party of Tajikistan, 2022) indicates plans to nearly triple the budget to $ 115,000 in 2022, but there is no information on whether an increase has occurred. As a part of RESILAND project the World Bank in 2022 approved a USD 45 million grant to support four natural areas in Tajikistan, including Tigrovaya Balka. From project documentation it is difficult to discern what particular activities are undertaken inside the property and whether they require Heritage impact assessment (World Bank/IDA, 2022).
Staff capacity, training and development
Reserve administration currently comprise 57 staff, including of 30 rangers and 5 senior rangers, who conduct daily rounds and night raid patrols operating 15 check points across the reserve (IUCN, 2023). The staff is sufficient for management and enforcement within the relatively small nature reserve. Due to its location on the border to Afghanistan, around 30 percent of the property is under the jurisdiction of border security forces of Tajikistan. The inscription decision (World Heritage Committee, 2023) requested the State Party to enhance management capacity of the nature reserve with a special focus on community engagement. The number of rangers is sufficient but their capacity remains very low. There is no comprehensive standard operating procedures. Modern biodiversity monitoring techniques are not implemented by rangers, and data acquisition is neither carried out in a standardized manner nor properly archived for future use. Rangers are generally tasked with combating violations (e.g., poaching) but are not trained in collecting information to improve management, or prepared to interact responsibly and ethically with local populations. While there are good efforts to combat deer poaching, there are also concerns about rangers involved in illegal fishing activities (IUCN Consultation, 2025).
Education and interpretation programmes
The Reserve maintains an interpretive trail with seven education panels. An NGO, the Kuhiston Foundation, provides education programs and environmental camps (State Party of Tajikistan, 2022).
Tourism and visitation management
The reserve is primarily focused on receiving visitors for the purpose of education and scientific research. The reserve reported $9,780 in “income from tourists” in 2021. In general, visitors create no negative impact on the natural complexes of the reserve. The Committee on Tourism under the Government of the Republic of Tajikistan is developing a program for the promotion of ecotourism until 2030, which provides for the inclusion of the reserve museum and the Korolevskaya Dacha lodge in the list of tourist sites (State Party of Tajikistan, 2022). Eco-tourism could be a significant source of income for the government and the protected area but the legal status of the protected area would require revision (at the moment leisure tourism is not authorized within the protected area and can only be branded as 'educational tours'). Once this legal reform is made, rangers should be better trained at guiding, a business plan and adequate infrastructure developed, an integrative management implemented etc.
Sustainable use
Human activity (grazing, haymaking, felling, hunting) within the boundaries ended when the reserve was established in 1938. There has been significant anthropogenic pressure on the ecosystems of the reserve during the socio-economic crisis in the Republic of Tajikistan in 1990- 2005 and there are reports of some illegal resource use within the property. However, since the mid-2000s, necessary measures have been taken on site both to prevent the existing anthropogenic impact and to restore the damaged ecosystems of the reserve (State Party of Tajikistan, 2022).
Monitoring
Every year, the staff of the reserve conducts a census of wildlife in the reserve, primarily Bukhara deer and goitered gazelle. The Ministry of Melioration and Water Resources samples mineralization of ground and surface waters annually (State Party of Tajikistan, 2022). Given available information (annual sampling only and very low budget for conservation activities) monitoring of threats from disturbance to the water regime, pollution and salinization may be insufficient. The new management plan for wetlands (2024-2028) shows discontinuous monitoring of water system in the protected area which would impair analysis and decision making. Fauna monitoring is currently focusing on deer using basic methodology that does not allow assessing the precision of estimates. Other fauna and flora are not monitored although projects exist to have external partners develop such methods that would then require to be taught and implemented by park rangers. Given the delay in setting up technical monitoring and the time needed to integrate these methods, the lack of results on this criterion is a serious concern.
Research
The nomination dossier provides a long list of research in the reserve, though most publications are older than 1990 and little mention is made of application of academic findings. The National Academy of Sciences of Tajikistan plans to intensify scientific research in the Tigrovaya Balka Nature Reserve (State Party of Tajikistan, 2022). The lack of recent peer-reviewed publications on Tigrovaya Balka (besides Volkova et al. 2024) underlines that research is urgently needed. n.
Effectiveness of management system and governance in addressing threats outside the site
Increased climate change impacts on the hydrological regime as well as increased water demands for irrigation and electricity production make the future of Tugay forest unpredictable. However, if technologies to improve water efficiency for irrigation in the vicinity of the property are adopted and the waterflow regime for existing dams are continuously scrutinised to secure a hydrological regime in the property that ensures the long-term maintenance of its natural values, the relatively small natural tugay forest may be able to adapt to changing environmental conditions. Reporting improvement of the hydrological regime and of the reserve since 2016 and a 50% reduction in water consumption for irrigation since 2016 is welcomed, however the proposed projects to develop hydropower reservoirs on the Vakhsh and panj rivers are of concern. In this regard, it will be important to ensure that no further river modifications, such as additional dams, are built in the upstream areas of the property as such structures would exacerbate the threats to the natural values of the property (IUCN, 2023).
Effectiveness of management system and governance in addressing threats inside the site
The significant threats to the site stem from outside the boundaries. Only educational, scientific and touristic uses are allowed inside, and there is adequate staffing to enforce existing restrictions. Managers have worked to partially restore the water regime, primarily through clearing of water channels and installing drip irrigation in the buffer zones. There are also some unresolved issues related to illegal fishing and livestock encroachment.
Tigrovaya Balka is managed as a strict nature reserve with only educational, scientific and touristic uses allowed inside the reserve, and there is adequate staffing to enforce these restrictions. However, the growing population of surrounding areas seeks to use its resources (fuelwood, grazing resources, fish, etc.) and there is a need for continuous programs providing alternative resources and education to local communities. Managers have worked to partially restore the water regime, primarily through clearing of water channels and installing drip irrigation in the buffer zones, but they have no control over water flows from upstream dams, which continue to be developed. The water regime is critical to maintaining the OUV, the restoration of the water regime will depend on whether or not artificial floods\environmental flows will be designed and continuously implemented as a part of Vakhsh Hydropower Cascade operational regime, while dry season water inflow quantity and quality also depends on a coordinated and harmonized regional landscape management. The monitoring of biophysical parameters on which to base adaptive management is largely absent and for the fauna mainly focused on deer as the unique indicator species. Overall long-term management requires technical guidance provided by trustful hydrological studies and predictive models. Finally at landscape scale the government has not put in place an integrated management plan that would help ensure sustainable development and nature protection in the Vakhsh River Basin.
Outstanding example of continuous ecological and biological processes in the evolution and development of desert-tugay biocenoses
High Concern
Trend
Deteriorating
The World Heritage Committee determined that the OUV was still well-preserved when it inscribed the site in 2023, and there are no reports of significant change in the limited time since inscription. However, references to the best-recorded historical conservation state date back to the 1960s -before the Nurek dam construction and encroachment during the civil war (1992-1997). Presently the values are very vulnerable to changes in the water regime caused by upstream dams and irrigation, likely to be exacerbated by climate change. The decision to build the Rogun HPP, which will likely perpetuate extremely unfavourable water regime, was made in 2024.
Largest and most intact tugay forest of this type in Central Asia
Low Concern
Trend
Stable
No reduction in the coverage of tugay forest within the site has been reported since inscription in 2023. However, continuous human encroachment was observed throughout the beginning of the century and has led to degradation and pollution of some areas due to agricultural development (Socio-Ecological Fund, 2020). Access to the nature reserve for humans has also been eased by drier conditions due to lack of flooding. As noted by many authors (e.g. Kuzmina and Treshkin. 2012) in the Aral Sea basin natural regeneration of key tugay forest species, such as Turanga poplars, at landscape level is impossible without periodic floods, while support to semi-artificial propagation through development of hydro-engineering structures\measures on site has limited effect and results in serious additional negative impacts. There are no studies after 2009 rigorously documenting change in Tigrovaya Balka forest flora, but earlier studies from Baday-Tugay far downstream of the property in Uzbekistan have documented decline in tugay plant diversity from 167 to 61 species (Kuzmina and Treshkin, 2006).
Assessment of the current state and trend of World Heritage values
Stable
The World Heritage Committee determined that the OUV was intact when it inscribed the site in 2023, and there are no official reports of significant change in the limited time since inscription. However, references to the best-recorded historical conservation state date back to the 1960s -before the Nurek dam construction and encroachment during the civil war (1992-1997). Presently the values are very vulnerable to changes in the water regime caused by upstream dams and irrigation, likely to be exacerbated by climate change.
Assessment of the current state and trend of other important biodiversity values
High Concern
Deteriorating
Population of Bukhara Deer (Cervus hanglu bactrianus) has reached its optimum\maximum at 386 heads and needs habitat restoration to expand (CMS 2024). The Goitered Gazelle (Gazella subgutturosa) population is reportedly stable (State Party of Tajikistan, 2022). However, the limited size of the property does not provide for an adequate representation of wide-ranging species such as Persian Leopard (Panthera pardus ciscaucasica), and the Striped Hyena (Hyaena hyaena). Current monitoring techniques do not allow to measure trends with precision. The park management intends to improve animal species monitoring in the future. The Persian Leopard has not been reported recently in Tajikistan (Ostrowski et al. 2022). If the Striped Hyaena exist in viable numbers in the reserve, the size of the reserve is probably not a limiting factor for this highly opportunistic scavenger.
Recent reports on fish (Artaev et al. 2025), birds (Garibmamadov, 2024), aquatic plants (Volkova et al. 2024) show alarming decline in different taxonomic groups. Environmental flow measures sufficient to secure long term survival and renewal of tugay floodplain and its key species has not been designed and instituted. Occurrence of some critically endangered species decreased (e.g. pike asp, sturgeons) over last 25 years. Invasive species such as snakehead by 2010 have infested all lakes of the reserve (Mirzoyev, 2007). Local scientists also suggest decline in native doves caused by their invasive relatives (Muratov, 2024) and decline in bird diversity in the reserve and surroundings (Garibmamadov, 2024). Therefore, key components of floodplain ecosystem with tugay forests are showing slow decline and loss of native biodiversity.
Recent reports on fish (Artaev et al. 2025), birds (Garibmamadov, 2024), aquatic plants (Volkova et al. 2024) show alarming decline in different taxonomic groups. Environmental flow measures sufficient to secure long term survival and renewal of tugay floodplain and its key species has not been designed and instituted. Occurrence of some critically endangered species decreased (e.g. pike asp, sturgeons) over last 25 years. Invasive species such as snakehead by 2010 have infested all lakes of the reserve (Mirzoyev, 2007). Local scientists also suggest decline in native doves caused by their invasive relatives (Muratov, 2024) and decline in bird diversity in the reserve and surroundings (Garibmamadov, 2024). Therefore, key components of floodplain ecosystem with tugay forests are showing slow decline and loss of native biodiversity.
| № | Organization | Brief description of Active Projects | Website |
|---|---|---|---|
| 1 | National Biodiversity and Biosafety Center, MSDSP, Caritas | Management effectiveness of 7 legally recognized PAs increased through investments in improved community participation and benefits, monitoring, enforcement capacity (GEF-7) | |
| 2 | Tajikistan Nature Foundation | Improving monitoring of wildlife in Trigrovaya Balka State Nature Reserve and building the capacity of park rangers. IKI-funded | |
| 3 | Public Association "Olima" | Restore the natural state of eleven lakes in Tajikistan's Tigrovaya Balka State Nature Reserve. (CEPF-funded) | |
| 4 | Youth Ecological Centre | Reduce collection of fuelwood from inside Tigrovaya Balka reserve, by promoting the adoption of energy-efficient technologies by surrounding communities, including fuel-efficient cook stoves, solar-powered lighting and slow-burning briquettes. (CEPF-funded) | |
| 5 | UNEP, Tajikistan Nature Foundation and others | The Central Asian Mammals and Climate Adaptation (CAMCA) project is working with communities and governments in Kazakhstan, Kyrgyzstan, and Tajikistan to increase the resilience of flagship mountain species – snow leopard, argali, Central Asian ibex, Tien Shan maral, Bukhara deer, Himalayan brown bear – and associated ecosystems to climate change and related threats. The goal of the CAMCA project is to contribute to increased climate change resilience of wildlife and people and to achieve greater conservation of biodiversity by: Providing technical assistance, advice and knowledge to improve the understanding of climate change vulnerability of flagship species, their habitats and vulnerability to climate change-related drivers; Developing and testing participatory tools and methods for ecosystem-based adaptation (EbA) and climate change-informed wildlife management; Establishing incentives for EbA and climate change-informed wildlife management to ensure long-term sustainability; and Communicating and raising awareness about the options and benefits of EbA and climate change-informed wildlife management |
https://camcaproject.org/
|
References
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