基于GIS与灰关联综合评价模型的土壤质量评价

Soil quality evaluation based on Geographic Information System and gray relative comprehensive evaluation model

本研究探讨了地理信息系统 (GIS)技术与层次分析模型和灰关联综合评价模型的结合在土壤质量评价中的应用。并以广东省东莞赤红壤农业现代化试验区为例 ,应用 Arc Info进行空间数据采取、处理与分析 ,采用叠置分析方法 ,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 ;构造灰关联综合评价模型 ,计算各单元的灰关联综合评价值 ,得出各单元按质量从劣到优排列的序列 ,应用 Arc View GIS绘制评价结果图。

Taken Dongguan Agricultural Modernization Experimental Field of Red Soil Areas as the research site,soil quality evaluation based on the technique of Geographic Information System and mathematic models were discussed.ArcInfo was adopted for spatial data collection,processing and analysis,overlay analysis was also used to determine evaluation unit by combination of evaluation factors.AHP was applied to judge the weight of each evaluation factor,gray relative comprehension evaluation model was given,value of gray relative comprehensive evaluation of all samples was calculated and the order of samples on soil quality was given.Soil quality evaluation result was mapped using ArcView GIS software.