| 区域需水量和缺水率的空间变异性 |
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| 引用本文： | 谢先红,崔远来,顾世祥. 区域需水量和缺水率的空间变异性[J]. 灌溉排水学报, 2007, 26(1): 9-13,43 |
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| 作者姓名： | 谢先红 崔远来 顾世祥 |
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| 作者单位： | 武汉大学,水资源与水电工程科学国家重点实验室,湖北,武汉,430072;武汉大学,水资源与水电工程科学国家重点实验室,湖北,武汉,430072;云南省水利水电勘测设计研究院,云南,昆明,650021 |
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| 基金项目： | 教育部跨世纪优秀人才培养计划 , 云南省滇中水资源大系统优化配置专题研究 |
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| 摘 要： | 应用地统计学方法研究区域需水量和缺水率的空间变异性。以云南滇中地区2000水平年和2010水平年的需水量和缺水率为例,对它们进行了连续性处理。2个年份的需水量符合对数正态分布,而缺水率呈正态分布;它们的空间变异性都很大,结构性因素起主要作用,各向同性条件下的变异函数可用球状模型和指数模型描述;二者具有复杂的各向异性,糅合了几何异向性和带状异向性。2个水平年之间的需水量相关关系不随尺度变化,而缺水率之间的相关性在不同尺度上表现不同。应用协克里金法空间插值得到滇中地区2个水平年需水量和缺水率的空间分布格局,分析了它们的影响因素。
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| 关 键 词： | 需水量 缺水率 滇中地区 空间变异 变异函数 协克里金法 |
| 文章编号： | 1000-646X（2007）01-0009-05 |
| 修稿时间： | 2006-07-28 |
Spatial Variability of Regional Water Requirement and Water Deficient Ratio |
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| XIE Xian-hong,CUI Yuan-lai,GU Shi-xiang. Spatial Variability of Regional Water Requirement and Water Deficient Ratio[J]. Journal of Irrigation and Drainage, 2007, 26(1): 9-13,43 |
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| Authors: | XIE Xian-hong CUI Yuan-lai GU Shi-xiang |
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| Affiliation: | 1. State key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan 430072, China; 2. Yunnan Institute of Water Resources and Hydropower Engineering Investigation, Design, and Research, Kunming 650021, China |
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| Abstract: | 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 level year as examples,which are from Dianzhong district,Yunnan Province,in China,the suitability with geostatistics is analyzed theoretically.The WR is close to the lognormal distribution,while the WDR is close to the normal distribution.Both have great spatial variability and they 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. |
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| Keywords: | water requirement water deficient ratio Dianzhong district spatial variability variogram cokriging |
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