水科学进展2011，Vol.22Issue(6)：872-880,9.DOI:32.1309.P.20111125.1636.008
灌溉用水效率尺度效应研究评述
Review of scale effect on the irrigation water use efficiency
摘要
Abstract
A comprehensive review of scale effect (SE) on the irrigation water use efficiency (IWUE) is presented in this study, including the definition and its causes as well as the upscaling techniques. SE is the composite outcome of two main causes that refer to reusing irrigation return flow and the spatial variability of local properties such as soil, crop, climate, irrigation structures, and amount of irrigation water and others. The existing indices of irrigation water use efficiency should be extended to including the connotation of water supply efficiency. Reusing irrigation return flow should be considered together with the economic constraint. The existing studies on scale effects show that the regularity with regard to indices of irrigation water use efficiency is not conclusive due to the complexity of nature conditions. Regarding to upscaling problem, the two main causes have been taken into account separately and need to be synthesized in the future studies. A reliable and practical upscaling formula is still unavailable for use to improve the practice of water management. Many efforts should be devoted to the theory of scaling as well as the scale effect of accompanying courses with the water cycle, based on the improvement of irrigation water use efficiency assessment indices.关键词
灌溉用水效率/尺度效应/尺度转换/水分生产率Key words
irrigation water use efficiency/ scale effect/ upscaling/ water productivity分类
农业科技引用本文复制引用
陈皓锐,黄介生,伍靖伟,杨金忠..灌溉用水效率尺度效应研究评述[J].水科学进展,2011,22(6):872-880,9.基金项目
国家自然科学基金资助项目(50809050) （50809050）
"十二五"国家科技支撑计划资助项目(2011BAD25B07) （2011BAD25B07）
