【摘要】 采用层次分析法划分了土壤环境各因素的敏感性和重要程度,从而建立起能科学表达土壤环境承载能力的土壤环境脆弱性评价体系。基于广西河池市指标数据,借助地理信息系统软件Arc GIS9.3、ENVI5.1、MATLAB7.0等计算平台对空间数据进行模型训练与验证,得出可视化表征土壤环境脆弱性空间分布状况的评价图件。结果表明,河池市北部、南部存在高度脆弱区,占全市国土面积的36.3%,中度脆弱区占38.3%,低度脆弱区占25.4%。总体来看,河池市大部分区域的土壤环境属中高度脆弱。更多还原

【Abstract】 This paper used the analytic hierarchy process to research soil environmental sensitivity and importance of the various factors,and established a vulnerability assessment methods of soil environment,which can scientifically express the bearing capacity of soil environment. Based on the data of Hechi city,assessmental maps were produced by sued of Arc GIS9. 3,ENVI5. 1 and MATLAB7. 0 softwares,which can display and evaluate regional soil environment vulnerability spatial distribution.evaluating results showed that severe vulnerable area locates in the nouthern and southern regions of Hechi City,accounting for36. 3%. Mild vulnerable area accounted for 38. 3%,and moderate vulnerable area accounted for 25. 4%. Overall,the soil environment belongs to moderate and severe vulnerable in most area of Hechi city.更多还原