青藏公路沿线风砂堆积的成因及其环境意义  

THE ORIGIN AND ENVIRONMENTAL MEANINGS OF THE SAND DEPOSIT ALONG QINHAI-XIZANG HIGHWAY

作　　者：赵秀锋[1] 

机构地区：[1]中国科学院兰州冰川冻土研究所

出　　处：《干旱区资源与环境》1991年第4期61-69,共9页Journal of Arid Land Resources and Environment

摘　　要：青藏公路沿线发育着三个时期的风砂堆积物。其成因主要是寒区特殊的表生作用——广义的寒冻风化作用。盖砂层对于辐射平衡、热量平衡、水份状况、植被条件、冻土生存以及其本身和相邻地区的环境都有着重大的意义。There are 3 periods of sand deposit along Qinhai-Xizang Highway that originated from a particular hypergenesis in cold region, cryogenic weathering. The sand deposit has important influences on many environmental elements, such as radiation balance, thermal equilibrium, hydrologic condition, vegetation etc, and also affects the formation and preservation of frost soil and permafrost environment.

关 键 词：冻土学 风砂堆积 冷生过程 环境 

分 类 号：P642.14[天文地球—工程地质学]