黔西南脆弱喀斯特生态环境空间格局分析

onsibleforthedeteriorationofkarstenvironment,withmanasthecoreofthecon2 tradiction1 Therehabilitationofthedeterioratingenvironmentconsistsoftwoaspects,i.e.,stopping humandestructiveactivitiesandcarryingoutimprovementmeasures1 BasedonGISanalysis,thedegreeofecologicalfragility (I )ordingtotheequation: I= I 1+ I 2- I 3 where I 1istheratioofrock2 desertifiedarea, I 2theratioofsoilerodedarea,and I 3theforestcoverage1 Thestudyregionisdividedintofoursub2 regionsintermsofthevalueofI:oneextremelyfragilesub2 region (I=64 ),oneseriouslyfragilesub2 region (I=51 ),andtwomoderatelyfragilesub2 regions (I =27,26,respectively )1 Thisprovidesaframeworkformanagementofregionalecologyandenviron2 mentinsouthwestGuizhou1 Keywords:karst;rock2 desertification;soilerosion;spatialpattern 6期兰安军等:黔西南脆弱喀斯特生态环境空间格局分析 741