摘要
[目的]基于向量夹角余弦法,评价贵州省各地区的水资源承载力。[方法]采用向量夹角余弦法确定指标权重,运用多目标灰色关联投影法计算贵州省各地区的水资源承载力投影值,并以均方差法确定的指标权重计算出的投影值作对比研究。[结果]2种方法求取的投影值非常接近,且排序结果一致。[结论]在水资源承载力评价中,运用向量夹角余弦法确定指标权重是可行的。
[Objective] The research aimed to assess the water resources carrying capacity in Guizhou Province based on the cosine vector included angle method.[Method] By using the cosine vector included angle method,the index weight was determined,and the projection value of water resources carrying capacity in Guizhou Province was counted by using the multiobjective gray relational projection method.Moreover,the projection value which was counted by the index weight determined by the mean variance method was as the control.[Result] The projection values which were gained by two kinds of methods were very close,and the ordering result was consistent.[Conclusion] In the assessment of water resources carrying capacity,it was feasible to use the cosine vector included angle method to determine the index weight.
出处
《安徽农业科学》
CAS
北大核心
2011年第11期6668-6669,共2页
Journal of Anhui Agricultural Sciences
基金
贵州省科学技术基金项目[黔科合(2009)2251]
贵州省高层次人才特助基金[TZJF(2009)25]
教育部科学技术研究重点项目(210201)
关键词
向量夹角余弦
指标权重
灰色关联投影
水资源承载力
Cosine vector included angle
Index weight
Gray relational projection
Water resources carrying capacity
