基于改进灰色聚类方法的农业旱灾脆弱性分析  

Analysis on Vulnerability of Agricultural Drought Disaster Based on the Improved Grey Clustering Method

作　　者：徐冬梅[1] 李璞媛[1] 王文川[1] 尹鹏博 

机构地区：[1]华北水利水电大学水利学院,郑州450011

出　　处：《灌溉排水学报》2016年第8期87-91,共5页Journal of Irrigation and Drainage

基　　金：国家自然科学基金项目(51509088);水资源高效利用与保障工程河南省协同创新中心开放研究基金项目(2013CICWP–HN)

摘　　要：在灰色理论的基础上,运用聚类与排序并重的改进灰色聚类决策方法,提出了基于改进灰色聚类的农业旱灾脆弱性分析模型。采用混合三角白化权函数的新思路,在白化权函数选取和聚类原则确定2个方面做出改进,并重新确定了决策标准。根据湖南省几个地区的资料,得出各地区的农业旱灾脆弱性排序及相应的等级。与相关研究对比,基于改进灰色聚类的农业旱灾脆弱性分析模型得到的等级是科学的、合理的,排序也较为可信。Agricultural drought is always a problem of concern, and it is affected by many factors. It is very im- portant to evaluate the intensity of drought and drought relief measures according to the known data. On the basis of grey theory, the agricultural drought vulnerability analytical was put forward using the improved grey cluster- ing decision method based on the agricultural drought vulnerability. The mixed triangular whitening weight func- tion was used to improve two aspects of both whitening weight function and clustering principle and a new deci- sion standard was determined. Several typical regions in Hunan province were used as the key study area to calcu- late their rank and level of the agricultural drought vulnerability. Compared with related research results, it was found that the model was scientific and reasonable, with more credible rank. It had extended significance to evalu- ate the vulnerability of agricultural drought disaster.

关 键 词：聚类与排序并重 改进的灰色聚类 农业旱灾 脆弱性 级别 

分 类 号：S423[农业科学—植物保护]