基于自适应权值的土壤侵蚀危险性模糊评价  

Fuzzy Comprehensive Evaluation of Soil Erosion Risk Based on Adaptive Weight

作　　者：朱翊[1] 王东兴[2] ZHU Yi;WANG Dongxing(China Academy of Surveying and Mapping, Beijing 100830, China;Liaoning Technical University, Fuxin 123000, China)

机构地区：[1]中国测绘科学研究院,北京100830 [2]辽宁工程技术大学,辽宁阜新123000

出　　处：《地理信息世界》2017年第6期57-60,69,共5页Geomatics World

基　　金：国家重点研发计划项目(2016YFC0803108)资助

摘　　要：针对现有土壤侵蚀危险性评价方法的不足,尝试多方法融合来建立评价模型,采用层次分析法确定基础权值,借鉴变权思想修正权值,一改以往"以不变(恒权)应万变(参评因子)"的权值状态,最终得到具有自适应性的连续权值,将其带入评价模型得到土壤侵蚀危险性模糊评价结果。该模型融合层次分析法和变权思想的优势,并考虑到了土壤侵蚀评价中的模糊性及不确定性,改进现有的评价模型,经实际验证,具有一定的普适性。In view of the shortcomings of the existing research methods,it tried to establish an evaluation model by the method of fusion.It took analytic hierarchy process to determine the basic weights,and updated the weights referencing of the variable weight theory,which changed the situation of adapting constant weight to the variable factors.The method achieved continuous and adaptive weights.Taking the weights updated into the evaluation model,it gained the results of fuzzy comprehensive evaluation for soil erosion risk.Not only considering the fuzziness and uncertainty in the evaluation of soil erosion,it also took the advantages of analytic hierarchy and the theory of variable weight,and improved the existing evaluation model,which has been verified by practicals.

关 键 词：土壤侵蚀危险性 自适应权值 模糊综合评价 层次分析法 变权理论 

分 类 号：X835[环境科学与工程—环境工程]