Spatial Variability of Regional Water Requirement and Water Deficient Ratio

摘要：

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.

关键词： water requirement water deficient ratio Dianzhong district spatial variability variogram cokriging

作者: Xie Xianhong Cui Yuanai Gu Shixiang

作者单位: State Key Laboratory of Water Resources and Hydropower Engineering Science,Wuhan University,Wuhan,4 State Key Laboratory of Water Resources and Hydropower Engineering Science,Wuhan University,Wuhan,4 Yunnan Institute of Water Resources and Hydropower Engineering Investigation,Design,and Research,Kun

会议类型: 国际会议

会议名称: International Conference on Effective Utilization of Agricultural Soil & Water Resources and Protection of Environment and the 4th Annual Academic Conference of Chinese Society of Agricultural Soil and Water Engineering

会议地点: 南京

会议语种:英文

页码: 398-407

在线出版日期: 2006-08-16（万方平台首次上网日期，不代表论文的发表时间）