摘要
作物虚拟水可以有效反映作物全生育期的耗水情况。基于2009—2018年河南省3种主要作物(玉米、小麦、花生)单位质量虚拟水含量和虚拟水总量,探讨其耗水量的时空变化,并将虚拟水总量与水资源总量进行对比分析。结果显示:2009—2018年,玉米的单位质量虚拟水含量稍有上升,小麦和花生的单位虚拟水含量波动变化。小麦的单位虚拟水含量最高,花生次之,玉米最少,单位质量虚拟水含量大都呈现为南高北低的空间趋势。小麦的虚拟水总量明显高于玉米和花生,达到2.98×10^(10) m^(3),虚拟水总量表现为上升或者波动,呈现为南高北低。河南省水资源紧张状况不容乐观,仅驻马店、信阳、南阳的水资源总量大于虚拟水总量。本研究从虚拟水理论分析了水资源消耗实证,可为河南省作物生产布局提供科学依据。
Virtual water can effectively reflect water consumption of crops during the whole growth period.Based on the virtual water and total virtual water of three primary crops during 2009—2018,this study analyzed the spatio-temporal water consumption in Henan Province.The results showed that the virtual water of wheat was the highest,followed by peanut and corn.The spatial pattern of virtual water was significantly different.Affected by the high content of virtual water and large crop yield,the total virtual water in wheat was significantly higher than that in corn and peanut.The total virtual water was high in the south and low in the north.The allocation of water resources was not optimistic,only Zhumadian,Xinyang and Nanyang had more water resources than total virtual water.
作者
朱婉怡
刘柄麟
刘德新
ZHU Wanyi;LIU Binglin;LIU Dexin(School of Geography and Ocean Science,Nanjing University,Nanjing 210023,China;College of Geography and Environmental Science,Henan University,Kaifeng 475004,Henan,China)
出处
《亚热带资源与环境学报》
2023年第2期17-23,共7页
Journal of Subtropical Resources and Environment
基金
南京大学优秀博士研究生创新能力提升计划B(2021018)。
关键词
虚拟水
时空分异
作物生产
河南省
virtual water
spatio-temporal differentiation
crop production
Henan Province
