摘要
以广东省东莞赤红壤农业现代化实验区为例 ,在地理信息系统 (GIS)技术和数学模型的支持下 ,应用ArcInfo进行空间数据采取、处理与分析 ,采用叠置分析的方法 ,以评价因素的组合确定评价单元 ;采用层次分析法确定评价因素的权重 ;在对评价标准进行模糊化处理后 ,建立变权评价模型进行土壤质量评价 ,应用ArcViewGIS绘制了评价结果图 ,并对变权评价结果与常权评价结果进行了比较与分析。结果证明 ,采用变权模型进行土壤质量评价 ,比常权评价更能反映土壤质量的实际情况。
Based on the technique of Geographic Information System and mathematical m odels, Dongguan Agricultural Modernization Experimental Field for Red Soil Areas was taken as the research site for soil quality evaluation. ArcInfo was adopted to data processing, and overlay analysis to spatial data analysis. Evaluation u nits were determined by combination of evaluation factors. AHP was applied to ju dge the weight of each evaluation factor. After evaluation criteria was fuzzifi ed, variable weight evaluation was carried out. The results were calculated and mapped by using ArcView GIS software. Difference between results from evaluation with variable and constant weight was compared and analyzed. Results show that soil quality evaluation with variable weight is better than with constant weight .;
出处
《土壤学报》
CAS
CSCD
北大核心
2001年第3期266-274,共9页
Acta Pedologica Sinica
基金
广东省自然科学基金 (批准号 :980 1 5 0 )
广东省科技创新百项工程项目 (99B0 5 80 1G)
国家"九五"攻关项目(95 -0 0 4 -0 3 -1 0)
关键词
地理信息系统
土壤质量
评价
变权模型
模糊变权评价
Geographic Information System (GIS), Soil quality, Ev aluation, Variable weight
