水利学报2017，Vol.48Issue(6)：651-660,669,11.DOI:10.13243/j.cnki.slxb.20160740
作物生产水足迹量化方法与评价研究
Research on the quantification methods for water footprint of crop production
摘要
Abstract
Water use efficiency assessment is the key and base of agricultural water resources management.Water footprint provides a new evaluation index for water use evaluation in both rain-fed agriculture and irrigation agriculture.The quantification of crop water footprint is the precondition for the assessment of agricultural water use efficiency.This study evaluated the applicable range and characteristic of existing crop water footprint calculation method based on field crop evapotranspiration.Then the study put forward two kinds of calculation methods that based on regional water consumption and regional water use.Combined with the first calculation method,three calculation methods that suitable for different evaluation targets and application scopes were established.Taken mainland China as the research area,water footprint of wheat was quantified by using the above three different methods.The results show that three calculation methods have their respective applicable scope and scientific connotation.Method that based on field crop evapotranspiration can reflect the crop use efficiency at the field scale and agricultural climate resources endowment.Method that based on regional water consumption can reflect the water use efficiency at the regional scale,agricultural climate resources endowment and regional water consumption characteristics.Method that based on regional water withdraw can reflect the regional water use efficiency,irrigation system performance.Due to differences of the three calculation method,the method should be chosen based on the research scale and target to make the quantization and assessment of crop water footprint more scientific and reasonable.关键词
水足迹/量化方法/用水过程/水分利用效率Key words
water footprint/quantification methods/water use process/water use efficiency分类
建筑与水利引用本文复制引用
吴普特,孙世坤,王玉宝,李笑雷,赵西宁..作物生产水足迹量化方法与评价研究[J].水利学报,2017,48(6):651-660,669,11.基金项目
国家重点研发计划项目(2016YFC0400201) （2016YFC0400201）
国家自然科学基金项目(51409218) （51409218）
陕西省自然科学基础研究计划项目(2016JQ5092) （2016JQ5092）
