川西北高原理塘草地沙化遥感监测初报

Preliminary study of remote sensing monitoring on Litang grassland's desertification of north-western plateau in Sichuan

根据已有资料对其进行了初步研究,发现近10多年来理塘县城附近草地沙化面积扩大了2.45倍之多,达到1495.70hm2,占研究区面积的10.20%,其严重程度不亚于北部地区,应引起各方的关注。

North-western plateau grassland in Sichuan is one of the five big pastoral areas. Since the past semicentury, serious deterioration and desertification of the local grassland came into being. Moreover, the deterioration and desertiflcation in Ruoergai-Hongyuan of its north caused particular attention, and author also did several investigations. In recent years, similar situation was found in Litang which located in the plateau＇ s south. According to the existing data,author did some preliminary study,and the results showed that the desertification area of the grassland nearby the county seat of Litang enlarged 2.45 times, increased to 1495.70 hm2, accounting for 10.20% of the total area. Furthermore,the degree of desertification there was nothing less than that in the north area,which should cause more attention.