中国岩溶2016，Vol.35Issue(5)：461-468,8.DOI:10.11932/karst20160504
21世纪西南岩溶石漠化演变特点及影响因素
Evolution features of rocky desertification and influence factors in karst areas of southwest China in the 21st century
摘要
Abstract
This work is based on the analysis of both remote sense results of rocky desertification area and the relative statistics data.The purpose is to reveal the temporal and spatial evolution features and the influence factors of rocky desertification in karst areas of southwest China in the 21st century.The total area of rocky desertification in karst areas of southwest China decreased to 920,000 km2 in 2015 from 1,135,000 km2 in 2000.Therefore,the general tendency of rocky desertification in karst areas of southwest China is gradual decline,while it was increase from 1989 to 1999 before the 21st century.Moreover,the rocky desertification degree in karst areas of southwest China is getting lighter,which changed from the heavy and middle ones in the early 21st century into the light and middle ones in 2015.Ratio of the serious heavy rocky desertification was 38.08％ in 2000,and decreased to 15.31％ in 2015,which shows that the tendency of rocky desertification in karst areas has been suppressed effectively.However,the rocky desertification evolution has a large regional difference and a close relationship with the vegetation rehabilitation strength,karst landform classifications,exploitation of ground water resources,rainfall distribution and poverty degree of the local people.The vegetation rehabilitation plan area has a positive relation with the decreased area of rocky desertification.There are better treatment effects of rocky desertification in the peak forest plain and the solution hill depression due to their relatively good ecological and economic conditions.The exploitation of karst groundwater resources can promote the forestation effects,while vegetation naturally restored more quickly in the regions with abundant rainfall.And the poverty of local people may lead to increase of the rocky desertification area.关键词
西南岩溶/石漠化/环境演变/影响因素/21世纪Key words
karst in southwest China/rocky desertification/environmental evolution/influence factor/21st century分类
资源环境引用本文复制引用
蒋忠诚,罗为群,童立强,程洋,杨奇勇,吴泽燕,梁建宏..21世纪西南岩溶石漠化演变特点及影响因素[J].中国岩溶,2016,35(5):461-468,8.基金项目
国家重点研发计划专题(2016YFC0502403-2) （2016YFC0502403-2）
国家自然科学基金项目(41571203) （41571203）
中国地质调查局地质调查项目(12120113005200) （12120113005200）
