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Impact of the changing area sown to winter wheat on crop water footprint in the North China Plain

机译：华北平原播种面积变化对作物水分足迹的影响

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摘要

The serious water scarcity and groundwater over-exploitation problems of the North China Plain (NCP) have aroused worldwide concerns. Achieving a reduction in agricultural water use is critical, because agriculture is the largest water consumer in the NCP. New solutions to these problems may lie in changes in the area sown to winter wheat across the NCP. In this study, the water footprint (WF) was applied as an aggregative indicator to evaluate the impact of the changing area sown to winter wheat. A Chinese version of the AEZ model, the China-AEZ model, was used for the evaluation. The results showed: (1) Green water plays a more significant role in winter wheat production in the southern part of the NCP than in the north; about a half of the water requirements for winter wheat are met by green water in the southern part of the NCP, compared to only a third in the north. (2) As a result of the north-south shift in the area sown to winter wheat during the period 1998-2011, the WF, the green water footprint (WFgreen) and the surface water footprint (WFblues) for winter wheat increased, respectively, by 459 X 10(6) m(3) yr(-1) (0.9%), by 973 x 10(6) m(3) yr(-1) (4.2%) and by 47 X 106 m(3) yr(-1) (0.5%), whereas the groundwater footprint (WFblueg) diminished by 561 x 10(6) m(3) yr(-1) (3.4%). The contribution of green water also increased, from 46.3% in 1998 to 47.8% in 2011, concurrent with the changes in the area sown to winter wheat. (3) The Hebei Plain, in the northern part of the NCP, conserved 1856 X 10(6) m(3) yr(-1) of blue water footprint (Whim) for winter wheat during the period 1998-2011, equivalent to about one third of the total amount of water supplied by the Middle Route of the South-to-North Water Transfer Project (MRP) in 2010. By comparison, WF and its components all increased in the southern provinces of the NCP. The diminishing requirement for groundwater and the increasing role of green water in winter wheat production encourage policies aimed at the further optimization of agricultural land use and the achievement of integrated blue-green water management in the NCP. (C) 2015 Elsevier Ltd. All rights reserved.
机译：华北平原的严重缺水和地下水超采问题引起了世界范围的关注。减少农业用水至关重要，因为农业是NCP中最大的用水户。解决这些问题的新方法可能在于改变整个NCP冬小麦播种面积。在这项研究中，水足迹（WF）被用作一个综合指标，以评估播种面积对冬小麦的影响。 AEZ模型的中文版本，即China-AEZ模型，用于评估。结果表明：（1）绿水在北卡罗来纳州南部的冬小麦生产中的作用要强于北部。在北卡罗来纳州南部，冬季小麦的需水量约有一半由绿色水满足，而北部仅为三分之一。 （2）由于1998-2011年期间播种到冬小麦的区域从北向南移动，冬小麦的WF，绿水足迹（WFgreen）和地表水足迹（WFblues）分别增加了。 ，459 X 10（6）m（3）yr（-1）（0.9％），973 x 10（6）m（3）yr（-1）（4.2％）和47 X 106 m（3）年（-1）（0.5％），而地下水足迹（WFblueg）减少了561 x 10（6）m（3）年（-1）（3.4％）。绿水的贡献也从1998年的46.3％增至2011年的47.8％，同时播种面积也改变为冬小麦。 （3）在1998-2011年期间，NCP北部的河北平原保存了1856 X 10（6）m（3）yr（-1）的冬小麦蓝色足迹（Whim），相当于南水北调中线项目（MRP）在2010年的供水总量中约占三分之一。相比之下，在NCP的南部省份中，WF及其组成部分均增加了。地下水需求的减少和绿水在冬小麦生产中的作用日益增强，鼓励了旨在进一步优化农业土地利用和实现NCP中蓝绿水综合管理的政策。 （C）2015 Elsevier Ltd.保留所有权利。

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  • 来源
    《Ecological indicators》 |2015年第10期|100-109|共10页
  • 作者

    Wang Xue; Li Xiubin; Fischer Guenther; Sun Laixiang; Tan Minghong; Xin Liangjie; Liang Zhuoran;

  • 作者单位

    Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China|Univ Chinese Acad Sci, Beijing 100049, Peoples R China;

    Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China;

    Int Inst Appl Syst Anal, A-2361 Laxenburg, Austria;

    Int Inst Appl Syst Anal, A-2361 Laxenburg, Austria;

    Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China;

    Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China;

    Shanghai Climate Ctr, Shanghai 200030, Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Agricultural land use change; Groundwater intensity; Water footprint; Water scarcity; Winter wheat;

    机译：农业用地变化;地下水强度;水足迹;缺水;冬小麦;

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