【摘要】 为探讨云南省农业水资源利用效率,选取与资源利用效率、经济效益、生态效益相关的15个指标,将遗传算法与传统的优化方法结合,利用投影寻踪技术的基本原理,建立了农业水资源利用效率评价模型。利用该模型对云南省16个地区2000,2005及2010年的农业水资源利用效率方案进行综合评价,优化农业水资源利用效率的状态变量指标的最佳投影方向,确定各样本的投影值,从而对各地区进行分类和评价。评价结果很好地反映了各评价指标的贡献率和方向性,符合高原季节性干旱地区农业水资源利用的现状。更多还原

【Abstract】 To investigate the use efficiency of agricultural water resources in Yunnan Province,an evaluation model of agricultural water use efficiency was established by selecting the resource use efficiency,economic benefit,ecological benefit and other related 15indexes,combining genetic algorithm with traditional optimization method,and using the principles of projection pursuit regression(PPR)technique.The model was used to comprehensively evaluate agricultural water scheme of 16areas in Yunnan Province in 2000,2005and2010,optimize the best projection direction of state variable index of the agricultural water resources use efficiency,and obtaine each sample projection value,so as to classify and evaluate each area.The evaluation result best reflects the contribution and directivity of each index and accords with plateau seasonal drought region of the agricultural water resources status.更多还原