投影寻踪分类模型在黑河流域农业用水方案健康性评价中的应用  

Projection pursuit classification model and its application for health evaluation about agricultural water consumption in the Heihe River basin

作　　者：孙琦伟[1,2] 吴普特[1,3,4,5] 王玉宝[3,4,5] 赵西宁 

机构地区：[1]西北农林科技大学资源与环境学院,陕西杨凌712100 [2]锡林郭勒盟水利勘测设计队,内蒙古锡林浩特026000 [3]中国旱区节水农业研究院,陕西杨凌712100 [4]西北农林科技大学水利与建筑工程学院,陕西杨凌712100 [5]国家节水灌溉杨凌工程技术研究中心,陕西杨凌712100

出　　处：《干旱地区农业研究》2012年第1期175-183,共9页Agricultural Research in the Arid Areas

基　　金：国家自然科学基金(50809055);国家科技支撑计划(2011BAD29B09);教育部引智项目(111-2-16);西北农林科技大学青年学术骨干项目

摘　　要：针对黑河流域农业用水比重大的特点,从农业资源利用、用水协调性、用水效率及效益4个方面构建了农业用水健康指标评价体系;建立了基于加速遗传算法的农业用水健康性投影寻踪评价模型;对黑河流域11个县1999、2006、2020年,3个水平年不同来水频率(50%、75%、95%)实际和拟定共计10个农业用水方案进行综合评价,并对结果进行分级。结果表明,各水平年拟定方案健康等级均高于实际农业用水方案,流域农业用水随时间1999—2006—2020年趋于健康发展,反映了各评价指标的贡献率和方向性,农业健康用水方案优化配置水资源,评价结果与区域近年来的农业用水发展情况相符,符合干旱地区水资源匮缺及生态环境脆弱的实际。Aimed at the major characteristics of large agricultural water use ratio in the Heihe River basin, the eval- uating system of healthy agricultural water utilization was constructed from 4 aspects of agricultural resources utilization, coordination of water using, water using efficiency and effectiveness. The projection pursuit evaluation model of agricul- tural water using health was built based on the accelerated genetic algorithm, and it was used to evaluate and classify 10 agricultural water using scheme from 11 counties in the basin of 3 target years with runoff frequency of 50 %, 75 % and 95 %. The results indicate that the health level of drafting scheme are higher than the actual one in each target year, the agricultural water using turns towards a healthy development from 1999--2020, which reflects the contribution rate and direction of each evaluating indicator, and the evaluating results of optimal allocation scheme for healthy agricultural wa- ter using is in line with regional agricultural water use development in recent years, which conforms to the reality of water resources scarcity and fragile eco-environment in arid regions.

关 键 词：投影寻踪分类模型 黑河流域 农业用水 健康性评价 

分 类 号：S27[农业科学—农业水土工程]