利用遥感和地理信息系统对青海湖环湖沙地的研究

Study of sandlands around Qinghai lake using remote sensing technique and geography information system

利用遥感(RS)和地理信息系统(GIS),对青海湖环湖沙地进行统计,发现环湖地区连续性沙地主要有四块。其中最大的两块为湖东和湖西沙地,面积分别为558 038km2、81 91km2,且分析了环湖连续沙地和斑状沙地的稳定性。结果表明,斑状沙地不稳定性高于连续沙地,并就环湖沙地的成因做了探讨。

The sandlands around Qinghai lake were statisticised using,remote sensing technique and geo- graphy information system.The results showed that there were four pieces of continuous sandlands in the area ,two largest sandlands distributed the east and western of lake,the measure of area was 558.038 km^2 and 81.91km^2 respectively.The stabiliby of continuous and uncontinuous sandlands were analyzed,the results showed that the uncontinuous sandlands were less stable that the continuous ones,Finally ,the conforming cause of the sandlands was discussed.