青藏高原高寒荒漠地带与寒冷干旱核心区域

青藏高原高寒荒漠地带位于高原主体西北部地势最高的部分。该区域气候极其寒冷干燥,属于高原亚寒带,高山高原地貌多被横向断陷盆地所切割;多年冻土发育,冰缘作用普遍;自然过程年青,高山寒漠土壤浅薄;生物区系成分交错,高寒荒漠景观突出;生态环境脆弱,需加大自然保护建设与管理。高寒荒漠地带腹地为寒冷干旱核心区域,是全球高原高山区域,具有独特地位的地生态格局。

The High Cold Desert Zone and a ColdAridCore Areaofthe Tibetan Plateau

The high cold desert zone, located on the northwesternregion, is the highest part of the Tibetan Plateau. This region with extremelycold and arid climate belongs to plateau subcold zone, which is characterizedwith high mountains and plateau landforms tranversed by lake basins, widespreadpermafrost and periglacial process, young natural process with shallow colddesert soil, and landscape of highcold desert with interfusedcomposition of biota. Due to the vulnerable ecoenvironment,construction and administration of natural conservation should be strengthenedin this region. The coldarid core, existed in thehinterland of high cold desert zone, is a unique geoecofeature in the plateau and alpine region on the Earth.