云南岩溶石漠化状况及治理规划要点

THE STATUS QUO OF KARST ROCKY DESERTIFICATION AND THE KEY POINTS FOR HARNESSING ROCKY DESERTIFICATION IN YUNNAN PROVINCE

云南岩溶区生态地质环境脆弱,石漠化明显,面积达34772.76km2,严重地制约着地区经济的可持续发展。石漠化分布具有集中连片、自北向南逐渐增多,程度加重的特点。区内地貌的演化过程中存在着石漠化的潜势,广泛分布的岩溶石山是形成石漠化的物质基础,特定的自然地理环境是产生石漠化的基本条件;人口增长过快、不合理的土地开发、工业污染是形成石漠化的主要影响因素,但自然因素和人为因素的主次因地而异。文中针对石漠化的形成条件及原因,提出了石漠化综合治理的指导思想,以及全面规划、综合治理,因地制宜,分类指导等原则,阐明了石漠化综合治理规划的目标、规划单元,规划部署的基本模式与工程措施。

The ecologic and geologic environment is very frail and the rocky desertification is very obvious(the rocky desertification area is 34772.76 km^2)in Yunnan karst area which seriously restrict the sustainable development of local economy.The rocky desertification region is concentrated in several parts and the area and extent get larger and more serious from the north to the south.There is rocky desertification potential in natural geomorphic evolution process.Widespread distributed karst mountain is the material and the local natural geographic environment is fundamental condition to rocky desertification.The main factor of rocky desertification is rapid increase of population,unreasonable exploiting of land and industrial pollution.However,the major factors leading rocky desertification are different in different parts,artificially imposed in some part,but naturally imposed in other part.According to the conditions and causes of rocky desertification,the guiding idea of synthetic harnessing,and the overall program as well as principle of the synthetic harnessing and principle of in line with local conditions are put forth.The aim,the unit and the basic model and engineering measures in the program of synthetic harnessing to rocky desertification are expounded in the paper.