水科学进展2017，Vol.28Issue(1)：14-21,8.DOI:10.14042/j.cnki.32.1309.2017.01.002
中国农业广义水资源利用系数及时空格局分析
Generalized water efficiency and strategic implications for food security and water management: a case study of grain production in China
摘要
Abstract
An index,generalized water efficiency (Eg),for the effective utilization rate of blue-green water evaluation was established in this paper.Eg in grain production for 31 provinces of China during 1998-2010 were cal culated.Then temporal-spatial patterns and attribution analysis of Eg in China were explored and conducted by using spatial autocorrelation and path analysis methods,respectively.The results show that,national value of Eg was esti mated to be 0.588 in 1998-2010 and the index increased slightly in most of the provinces.Spatial autocorrelation a nalysis results shows,provinces with resemble Eg value shown significant aggregation.Regions with high Eg values are gathered in Western China while ones with lower Eg distributed in Southeast China;and the global and local spatial aggregation showed decreasing trends over time.Eg was affected strongly by regional agricultural production manage ment level,while the climate and economic conditions had less influence on the effective rate of blue-green water resources.Making a general survey of provincial Eg,water productivity (Pw),water stress index (WSI) and grain production ability,southwest provinces may expand grain production scale in order to play the advantage of high Eg,and major grain producing areas of Northeast China should take measures to raise Eg to ensure food security and sustainable utilization of water resources.The results of this report can provide reference for the development of national water efficiency in agriculture and food production and water resources management strategy.关键词
蓝水/绿水/利用率/蒸散量/通径分析/粮食安全Key words
blue water/green water/effective utilization rate/evapotranspiration/path analysis/food security分类
建筑与水利引用本文复制引用
操信春,邵光成,王小军,王振昌,何鑫,杨陈玉..中国农业广义水资源利用系数及时空格局分析[J].水科学进展,2017,28(1):14-21,8.基金项目
国家自然科学基金资助项目(51609065) （51609065）
中央高校基本科研业务费专项资金资助项目(2015B11014) （2015B11014）
The study is financially supported by the National Natural Science Foundation of China (No.51609065) and the Fundamental Research Funds for the Central Universities (No.2015B11014). （No.51609065）
