岩溶洼地石漠化景观格局  

Landscape pattern of rocky desertification in karst depression areas

作　　者：张盼盼[1,2,3] 胡远满[1] 肖笃宁[1] 李秀珍[1] 殷洁[1,3] 

机构地区：[1]中国科学院沈阳应用生态研究所,沈阳110016 [2]国家林业局昆明勘察设计院,昆明650216 [3]中国科学院研究生院,北京100049

出　　处：《生态学杂志》2010年第9期1860-1865,共6页Chinese Journal of Ecology

基　　金：国家重点基础研究发展计划资助项目(2006CB403201)

摘　　要：喀斯特石漠化是中国西南地区广泛分布的一种生态地质灾害,已成为当今生态环境领域研究的热点和难点。从景观生态学角度出发,借助于Erdas9.1和ArcGIS9.0等软件,以存在较多岩溶洼地的贵州省普定县为例,对岩溶洼地地区的石漠化景观格局进行研究,并同其他非洼地的喀斯特地貌类型区的石漠化景观格局进行比较分析。结果表明:从整体上来看,普定县岩溶洼地地区的石漠化程度较轻,石漠化斑块多呈离散分布;非洼地地区的石漠化程度较强,以大斑块的形式呈团聚状分布;岩溶洼地地区以中度及其以下水平的石漠化为石漠化土地的主体,大体上呈现出石漠化强度越高、其斑块更为破碎的趋势;通过两类岩溶地貌类型区之间的对比分析,发现洼地地区的石漠化程度低于非洼地地区;但普定县岩溶洼地的石漠化水平高于贵州省全省和安顺地区,说明研究区岩溶洼地地区的石漠化形势较为严峻,亟待解决。Rocky desertification is one of the eco-geological disasters widely distributed in karst areas of Southwest China,and one of the hotspots and difficulties in ecology and environmental sciences. From the viewpoints of landscape ecology,and with the help of Erdas 9.1 and ArcGIS 9.0,a case study was made in the Puding County of Guizhou Province,aimed to understand the landscape pattern of rocky desertification in karst depression areas of Southwest China,and to compare it with those in the other karst geomorphologic areas. Overall,the rocky desertification in the karst depression areas of Puding County was not serious and presented a dispersed distribution,while that in other karst geomorphologic areas was much serious and showed an aggregate distribution pattern with big rocky desertification patches. In karst depression areas,the main types of rocky desertification were potential rocky desertification,light rocky desertification,and moderate rocky desertification. With the increasing degree of rocky desertification,patch fragmentation increased. The rocky desertification degree in karst depression areas was lower than that in other karst geomorphologic areas,but the karst depression areas in Puding County had much more serious rocky desertification than those in whole Guizhou Province or Anshun City,illustrating that the rocky desertification in karst depression areas in Puding County was rather serious,being a problem needed to be solved urgently.

关 键 词：岩溶洼地 石漠化 景观格局 普定县 

分 类 号：X171[环境科学与工程—环境科学]