摘要
长江源区存在不同程度的沙化现象，沙地种类多样，分布广泛。沙化过程在高寒干旱的气候条件、丰富的物源条件、独特的冻土条件和人为因素等综合影响下，从晚更新世末期开始，经过几次旋回一直持续到现在，对该区冻土环境、植被状态。
Desertification of various degrees have been happening in the source region of Yangtze River. There are many kinds of sandy land spreading over the region. Affected by the comprehensive actions of arid and cold climate, rich material source, special permafrost and human's activities, the process of desertification began at the end of the Late Pleistocene and has kept going on ever since through several cycles. It has marked effects on permafrost, vegetation and human's activities.
出处
《长江流域资源与环境》
CAS
CSCD
1996年第4期362-366,共5页
Resources and Environment in the Yangtze Basin
基金
国家自然科学基金
