基于GIS和RS的石漠化敏感性评价及空间分异特征——以贵州省为例  

Sensitivity Assessment of Karst Rocky Desertification and Its Spatial Differentiation Characteristics Based on GIS and RS——A Case Study of Guizhou Province

作　　者：李威[1,2] 李月臣[3,1,2] 唐谊娟 

机构地区：[1]重庆师范大学地理与旅游学院,重庆400047 [2]GIS应用研究重庆市高校重点实验室,重庆400047 [3]重庆师范大学计算机与信息科学学院,重庆400047

出　　处：《资源开发与市场》2014年第11期1334-1337,F0004,共5页Resource Development & Market

基　　金：重庆市博士后科研项目特别资助基金项目(编号:xm201102001);重庆市教委科技项目(编号:CY120402);重庆市农业气象与卫星遥感工程技术研究中心;重庆市气象局开放基金项目(编号:Kfjj-201103);资源环境与生态建设;重庆市高校创新团队基金项目

摘　　要：石漠化是我国西南地区比较突出的生态问题,严重制约着社会与经济的发展。以贵州省岩溶生态现状为背景,选取影响石漠化主要的地形、植被、坡度和土壤4个自然因子,运用GIS的空间分析将研究区石漠化敏感性划分为不敏感、轻度敏感、中度敏感、高度敏感和极敏感。从结果看,研究区的石漠化敏感性以高度敏感和中度敏感为主;从空间上看,呈现连续不规则的条带状分布,主要分布于东北部、北部、西部、西南部和中部等区域。The rocky desertification was a salient ecological problems in Guizhou Province, seriously restricting the development of social economy. On the bases of environmental status of karst regions in Guizhou, selected rocky property, slope, vegetation coverage and soil type in the study area, analyzed the each single factor on the sensitivity of the study area extent of desertification on RS and GIS, and built the spatial analysis modle for patial overlap analysis of evaluation indexes on ArcGIS, divided sensitivity of the study area into insensitive, mildly sensitive, moderately sensitive, highly sensitive and very sensitive 5 level. The results showed that：The area of karst rocky desertification was 108781.43km2 , accounting for 61.48 % of the total area, the extreme and strong sensitivities were the main types of karst rocky desertification sensitivities. Sensitive regions indicated a tendency where the strip distributed the characteristic by successive and irregular in terms of the spatial prospective and mainly distributed in the northeast, north, west, southwest and central regions. However, the areas in southeast hardly attributed to the sensitive regions.

关 键 词：贵州省 喀斯特 石漠化 敏感性 

分 类 号：X820.4[环境科学与工程—环境工程]