摘要
以长春市郊区农地为例,应用ArcInfo进行空间数据采集、处理与分析,以土地利用类型作为评价单元,采用层次分析法确定评价因素的权重,引入模糊数学方法,建立各评价因素对肥力的隶属函数,计算各个肥力评价因素的评分,最后用指数和法求出各评价单元的综合评价值,根据综合评价值的大小划分土壤肥力等级,并分级统计其面积。应用ArcView GIS绘制了评价结果图。
Based on the techniques of Geographic Information System(GIS), soil fertility evaluation was conducted for the farmlands in Changchun suburb area. Arclnfo software was adopted for spatial data collection, processing and analysis. Evaluation unit was determined by land use. AHP was applied to judge the weight of each evaluation factor. Based on the method of fuzzy mathematics, membership functions were set up to calculate the values of all evaluation factors and units. Soil fertility level was graded according to the comprehensive assessment values. The evaluation result was mapped using Arc View GIS software.
出处
《生态科学》
CSCD
2003年第1期18-20,共3页
Ecological Science
基金
中国科学院长春净月潭遥感实验站开放基金
广东省自然科学基金(980150)
