以小流域为单元的罗甸喀斯特石漠化综合防治

基于TM影像解译和实地考察，查清了贵州省罗甸县石漠化面积为103479．65hm^2，占全县土地总面积的34．35％。而石漠化严重的从里河、板庚暗河、栗木河、仿里河重点小流域面积为9796hm^2，其申石漠化面积为5053hm^2，占小流域面积的51．58％。为了减少水土流失，遏制石漠化进程，促进生态良性循环，基本建成较完备的森林生态系统和比较发达的林业产业体系，提出以小流域为单元的珠江中下游罗甸县喀斯特石漠化防治措施及目标，其综合防治措施包括生态修复、水利水保与基本农田建设、喀斯特水资源开发、农村能源建设及生态移民等。

Controlling measurements of rocky desertification of key small watershed in Luodian county

Based on TM imagine and field investigation, this paper analyzed the current distributed area of rocky desertifieation, accounting for 103 479.65hm^2 ,34. 35 percent of the total area of Luodian county. However, the ranges of Chongli river, Bangen river, Limu river, Fangli river are key small watershed of serious rocky desertifieation, accounting for 9 796hm^2. The area of rocky desertifieation is 5 053hm^2 ,corresponding to 51.58 percent of the total small watershed of Luodian county. Therefore, by taking small watershed as a unit, the controlling measurements to harness rocky desertifieation were presented to control soil and water loss, harness development of rocky desertifieation, promote ecological beneficial cycle, basically establish forest ecological system and develop forest industry system, including ecological recovery, water and soil conservation, Karst water resource exploitation, county energy sources construction and ecological migration.