Spatial Variability of Regional Water Requirement and Water Deficient Ratio

机译：区域需水量和缺水率的空间变异性

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The spatial variability of regional water requirement (WR) and water deficient ratio (WRD) are studied with geostatistics.Taking the WR and WDR in 2000 and 2010 year as examples,which are from Dianzhong district,Yunnan Province,China,the suitability with geostatistics is analyzed theoretically.The WR is close to the log normal distribution,while the WDR is close to the normal distribution.Both have great spatial variability and are mainly influenced by structure factors.Their isotropic variograms can be described with sphere models and exponential models.The variables show complicated anisotropic properties combining geometric anisotropy and zonal anisotropy.The relativity of WR between 2000 and 2010 keeps constant at different scales,but the relativity of WDR varies with the distance.The spatial distributions of the variables are interpolated with cokriging and their factors are analyzed.

机译：利用地统计学研究了区域需水量和缺水率（WRD）的空间变异性。以云南省滇中地区2000年和2010年的WR和WDR为例，对地统计学的适用性WR接近对数正态分布，WDR接近正态分布，两者空间变异性大，主要受结构因素影响，其各向同性变异函数可以用球面模型和指数模型来描述。这些变量表现出复杂的各向异性特性，将几何各向异性和纬向各向异性结合在一起.2000年至2010年WR的相对性在不同尺度上保持恒定，但WDR的相对性随距离而变化。变量的空间分布用共克里格插值法及其因素进行插值被分析。

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来源
《Effective Utilization of Agricultural Soil amp; Water Resources and Protection of Environment》|2006年|398-407|共10页
会议地点 Nanjing(CN);Nanjing(CN)
作者
GE Shaocheng; rnSHAO Liangshan; rnZHANG Qingfeng; rnJING Deji;
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作者单位

Xie Xianhong@State Key Laboratory of Water Resources and Hydropower Engineering Science,Wuhan University,Wuhan,430072,China--Cui Yuanai@State Key Laboratory of Water Resources and Hydropower Engineering Science,Wuhan University,Wuhan,430072,China--Gu Shixiang@Yunnan Institute of Water Resources and Hydropower Engineering Investigation,Design,and Research,Kunming,660021,China--;

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原文格式 PDF
正文语种 eng
中图分类农田基本建设、农垦;
关键词
water requirement; water deficient ratio; Dianzhong district; spatial variability; variogram; cokriging;

机译：需水量;缺水率;滇中地区;空间变异性;变异函数;协克里金法;

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Spatial Variability of Regional Water Requirement and Water Deficient Ratio

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