青海高寒区土地荒漠化及其防治

LAND DESERTIFICATION IN QINGHAI HIGH COLD REGION AND ITS CONTROL

青海是我国荒漠化面积较大、危害严重地区之一。本世纪５０年代以来，由于自然因素和人为因素影响，使土地荒漠化加剧，对人民生产生活、国民经济建设造成了严重危害。根据４次全省荒漠化土地的普查资料，以及对柴达木盆地、共和盆地和青海湖盆地３个主要荒漠化土地分布区的研究，认为青海高寒区的荒漠化土地年平均扩大１３．４万ｈｍ２，年增速率为２．２％，已成为青海非常突出的生态环境问题。最后对荒漠化防治途径进行了探索。

Qinghai is one of the seriously desertified regions in China. The intensified land desertification resulted from natural and mankind factors has been harming the peoples life and production and national economy since 1950s. Both the general survey data for 4 times over provincial desertified land and the studing results on 3 main desertified areasQaidam,Gonghe and Qinghai Lake Basins, proved that the average increase of desertified land in Qinghai high cold region was 13 4×10 4 hm 2 and the increasing ratio was 2 2%.Against the serious environmental problem, the accesses of desertification control were discussed in the paper.