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Rangkul Valley Important Bird Area : ウィキペディア英語版 | Rangkul Valley Important Bird Area
The Rangkul Valley Important Bird Area is a 1612 km2 tract of land in eastern Gorno-Badakhshan Autonomous Province in eastern Tajikistan, not far from the border with China. It contains two high altitude lakes and has been identified by BirdLife International as an Important Bird Area (IBA).〔 ==Description== The Rangkul Valley is an inter-mountain trough in the eastern Pamir Mountains 60 km north-east of the district centre of Murghab. The central part of the IBA, at an altitude of 3600–4000 m, contains two lakes, Rangkul and Shorkul, which form an endorheic system and are connected by the Izyuk channel. Rangkul is a freshwater lake with an area of 8 km2 and a depth of 6 m. Shorkul is brackish; it has an area of 7 km2. Both lakes freeze in winter and contain no fish, but support numerous invertebrates, including amphipods, beetles and mosquito larvae. Apart from the lakes and their littoral zones the valley is predominantly alpine semi-desert with scattered shrubs and is subject to strong winds. It is threatened by overgrazing, which leads to increased wind erosion and desertification.
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