摘要
塔里木盆地的荒漠面积达到 5 2 .1× 10 6 hm2 ,按物质组成、地表景观和形成 ,荒漠可划分为盐漠、泥漠、砾漠和沙漠 4种类型。从不同荒漠类型剖面结构特点看 ,盐漠表层有盐结皮或盐结壳 ,泥漠则板结而坚硬 ,砾漠在地表有砾幕 ,它们都有一定抗风蚀的能力。沙漠中的沙丘组成物质以细沙为主 ,无特殊抗风蚀层次。尽管塔里木盆地的一些荒漠类型有一定抗风蚀的结构特点 ,加强荒漠区域的生态保护仍是非常重要。
The area of deserts is up to 52.1×10 6 hm 2 in Tarim basin.Desert was divided into four types, such as salt desert,argillaceous desert,gravel desert,sand desert according to material composition,surface landscape and formation.Structure characteristics of different desert types were analyzed.The results show that there is a salt crust in surface of salt desert,there is a compact and hard layer in surface of argillaceous desert,there is a gravel accumulation layer in surface of gravel desert.These characters of desert types improve their capacity of anti wind erosion.Sand desert is mainly consisted of fine sand without anti wind erosion layer.Although there are certain characteristics of anti wind erosion in some desert types,the ecological protection is important in desert area.
出处
《水土保持学报》
CSCD
北大核心
2001年第1期16-18,53,共4页
Journal of Soil and Water Conservation
基金
国家重点基础研究发展规划资助项目!( G19990 43 5 0 3 )
关键词
荒漠类型
抗风蚀
塔里木盆地
desert types
anti wind erosion
Tarim basin
