云南滇池湖泊流域水土流失灾害遥感调查

A Remote Sensing Study on the Soil Erosion Disaster of Dianchi Area of Yunnan

采用遥感技术与地面调查相结合的方法，组织多学科综合调查研究，对云南滇池流域水土流失状况及程度进行了调查分析。初步查明了引起水土流失灾害的原因并提出相应的防止对策。

Dianchi Lake is the sixth largest fresh water lake of China,located on the south out-skirts of Kunming.The water supply of Dianchi is dependent upon the atmosphere precipi-tation in the Dianchi drainage area about 2920 km￣2.In recent 30 years, the water resourcesdemand has been increased because of the economic development of the city.In thedrainage area,however,owing to the deforesting and the decrease of the vegetation cover,etc. the soil is seriously eroded,which causes the geological disaster,the degeneracy ofthe ecological environment,the decrease of the atmosphere precipitation and the loweringof the lake water level.And the lake bottom has been siIted up by the sand and mud sedi-ment,and the water area of the lake has been shrinking,This situation has attracted theattention ot the general public.In order to investigate the degree of the soil erosion of the Dianchi drainage area andprotect the water resources, a synthetic study of many subjects has undergone by remote-sensing method combined with surface geological investigation,The cause of the geologicaldisaster of soil erosion has deem preliminarily discovered.And the scientific strategy toprevent the soil erosion has been proposed.