水利学报Issue(1)：79-86,8.DOI:10.13243/j.cnki.slxb.2014.01.011
基于GIS的区域潜水蒸发计算
Calculating regional groundwater evapotranspiration based on GIS
摘要
Abstract
Groundwater evapotranspiration is affected by metrological conditions, soil type, groundwater depth and land use (crop variety), and the spatial variability of all these factors should be taken into con-sideration. A GIS-based regional groundwater evapotranspiration calculation (GREGEC) method was pro-posed and implemented by programming ArcObjects with VBA in the environment of ArcGIS 10.0. The method was applied to calculate regional groundwater evapotranspiration in Liuyuankou Irrigation System and the outputs were compared with the methods of water balance and groundwater modeling. The results show that compared with the water balance method, the error in annual groundwater evapotranspiration is about 2%;the spatial distribution patterns of groundwater evapotranspiration from the GREGEC and the groundwa-ter modeling method are similar, while the monthly groundwater evapotranspiration from GREGEC is more reasonable. The GREGEC method can improve the estimation accuracy and it was convenient to be imple-mented by programming, which is helpful for upscaling groundwater evaporation from the traditional point scale to the regional scale.关键词
灌区/潜水蒸发/GIS/空间变异性Key words
irrigation district/groundwater evapotranspiration/GIS/spatial variability分类
农业科技引用本文复制引用
罗玉峰,郑强,彭世彰,毛怡雷..基于GIS的区域潜水蒸发计算[J].水利学报,2014,(1):79-86,8.基金项目
国家自然科学基金资助项目（50809021，51179048）；水文水资源与水利工程科学国家重点实验室自主研究项目（2010585412）；江苏高校优势学科建设工程资助项目 （）
