巴林右旗沙漠化土壤浅析

Preliminary Analysis on Desertified Soils in Balinyouqi of Inner Mongolia.

<正> 内蒙古巴林右旗位于科尔沁沙地的西端,全旗总面积为9.7878×10~5 ha,其中风沙土面积为2.65×10~5 ha,占27.1%。据1981年和1964年两次土壤普查提供的资料,1981年比1964年,风沙土面积增加了96.2%,平均每年以7600ha的速度发展。全旗风沙土主要分布在西拉沐沦河和查干沐沦河沿岸。沙地大都呈带状分布的沙丘链,高度一般为5——10m,最高达20m以上。流动沙丘总面积为4.05×10~4 ha,占风沙土面积的15.3%,多为新月形沙丘或沙丘链,植被盖度在10%以下。

Investigations and analysis are made on the cause, tendency and harmful consequences of desertification in Balinyouqi of the west Keerqin Desert. Dominant factors of desertification in this area are livestock over-grazing, land over-reclamation, firewood cutting and other human economic activities. Desert area has been doubled that of 17 years ago, resulting in the declination of livestock products and economic benefits. Successful experiences of desertcontrol and stabilization are summarized and measures are put forward in line with local conditions in this area.