西南喀斯特区域土地利用与石漠化相关性分析——以环江毛南族自治县为例

The correlation analysis of land use patterns and rock desertification in Southwest China——A case study in Huanjiang County

基于两期石漠化和土地利用数据,定量分析了环江县各区不同等级石漠化土地中土地利用类型的分布规律和不同土地利用类型的石漠化发生率。研究发现,不同等级石漠化与不同土地利用类型存在着相关性,且这种关联性地域差异明显,受土地利用状况、人类活动强度等因素的制约。不同土地利用方式对不同土地生态系统的干扰效应和干扰过程是不一样的,导致喀斯特石漠化土地退化过程、退化程度、退化群落特征有异,最终表现在恢复方式和恢复难度的差异上。

Based on data of Karst land desertification and land use in 1988 and 2000, the law of distribution of Karst land was revealed and occurrence ratio of rocky land desertification in Huanjiang was explored quantitatively.Results indicated that there was a correlation between different grade rocky desertification and land-use types, and the correlation was affected by the active of human being.The effect and process of different land use types to different land ecosystem was dissimilar.