【摘要】 喀斯特地区土地的石漠化与地层岩性、河流切割、土壤侵蚀、坡度及人类活动等有关。主要从岩性方面来分析喀斯特地区石漠化的成因,并以贵州高原的清镇市为例,结合石漠化的相关数据,运用GIS工作平台及计算机数据统计分析系统,分析各岩层组中各岩性石漠化的分布及等级,从而得出石灰岩地区的石漠化面积最大,石漠化程度最高,而泥灰岩地区的石漠化面积最少。因此,喀斯特地区的地层岩性与石漠化的级别和分布有密切关系。更多还原

【Abstract】 In karst region, rock desertification is related to stratum and lithology, incising of river, soil erosion, gradient and mankind action etc. The problem on how lithology affects rock desertification in karst region are analyzed. In the meantime, analysis of desert spatial distributing and grade is based on desert correlation data in Qingzhen city by GIS technique and data computing system. So it can be obtained that rock desertification area is the biggest and degree is the highest in limestone area, but it is reverse in marl region. Therefore, it is thought that grade and distribution of rock desertification are related to the stratum and lithology in Karst region.更多还原