全国大型灌区灌溉用水有效利用系数空间变异性分析  

Spatial Variability of Irrigation Efficiency of Nationwide Large-scale Irrigation Systems

作　　者：冯保清[1,2] 

机构地区：[1]中国水利水电科学研究院,北京100038 [2]中国灌溉排水发展中心,北京100054

出　　处：《灌溉排水学报》2012年第6期42-44,共3页Journal of Irrigation and Drainage

基　　金：水利部公益性行业专项经费项目(2007101002)

摘　　要：根据2006—2009年全国大型灌区样点灌区灌溉用水有效利用系数测算分析结果,采用地质统计学方法,对大型灌区灌溉用水有效利用系数空间变异性进行分析。结果表明,在650km左右范围内,大型灌区灌溉用水有效利用系数具有自相关性,结构性因素起主要作用,各向异性不明显。Data of Irrigation Efficiency （IE） of nationwide typical large-scale irrigation systems trom g006 to 2009 were collected and their spatial variability was calculated using geostatistical analysis. The results of spatial variability analysis indicated that the autocorrelation extent of IE was about 650 km and structural factors played a major role, which meant that anisotropic property was not obvious.

关 键 词：灌溉用水有效利用系数 空间变异性 地质统计学 大型灌区 

分 类 号：S274.2[农业科学—农业水土工程]