Virtual nitrogen and phosphorus flow associated with interprovincial crop trade and its effect on grey water stress in China
Virtual nitrogen and phosphorus flow associated with interprovincial crop trade and its effect on grey water stress in China
复制标题
中国省际农作物贸易虚拟氮磷流量及其对灰水胁迫的影响
DOI：
10.1088/1748-9326/ac3604
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发表时间：
2021-11
影响因子：
6.7
通讯作者：
Lingfeng Zhou
中科院分区：
文献类型：
--
作者：
D;an Ren;Wenfeng Liu;Hong Yang;La Zhuo;Yindong Tong;Yilin Liu;Yonghui Yang;Lingfeng Zhou
抽象的。灰水足迹(GWF)被定义为在接收水体中稀释污染物的淡水需求。它被广泛用于测量污染物负荷对水资源的影响。GWF可以通过贸易从一个地区转移到另一个地区。尽管以前在国家一级对污染流动进行了调查，但还没有明确的研究表明作物贸易在多大程度上影响跨地区的GWF以及与之相关的灰水压力(GWS)变化。基于玉米、水稻和小麦三种主要农作物的氮、磷流失强度，分析了2008-2012年与跨省农作物贸易相关的污染流，并评价了中国地区全球作物贸易的空间格局。结果表明，全国N、P综合GWF为12710亿m~3/a·−~1，其中玉米、水稻和小麦的贡献率分别为39%、37%和24%。通过省际农作物贸易，南方的中国将大量的氮磷损失外包给北方，导致中国北部的全球水资源增加了30%，南部的中国减少了66%的全球水资源。具体地说，北部中国的吉林、河南和黑龙江分别增长了161%、114%和55%，而南部的福建、上海和浙江分别下降了83%、85%和80%。研究发现，省际农作物贸易导致全国GWF和GWS下降。对全球水资源和全球水资源的洞察可以为中国制定跨地区缓解氮磷污染的政策奠定基础。
Abstract. The grey water footprint (GWF) is defined as freshwater requirements for diluting pollutants in receiving water bodies. It is widely used to measure the impact of pollutant loads on water resources. GWF can be transferred from one area to another through trade. Although pollution flow has previously been investigated at the national level, there has been no explicit study on the extent to which crop trade affects GWF across regions and the associated changes in grey water stress (GWS). This study analyzes pollution flow associated with interprovincial crop trade based on nitrogen (N) and phosphorus (P) loss intensity of three major crops, namely, maize, rice and wheat, which is simulated by a grid-based crop model for the period 2008–2012, and evaluates the spatial patterns of GWS across China. The results indicate that the integrated national GWF for N and P was 1271 billion m3 yr−1, with maize, rice, and wheat contributing 39%, 37%, and 24%, respectively. Through interprovincial crop trade, southern China outsourced substantial N and P losses to the north, leading to a 30% GWS increase in northern China and 66% GWS mitigation in southern China. Specifically, Jilin, Henan, and Heilongjiang Provinces in the northern China showed increases in GWS by 161%, 114%, and 55%, respectively, while Fujian, Shanghai, and Zhejiang in the south had GWS reductions of 83%, 85%, and 80%, respectively. It was found that the interprovincial crop trade led to reduced national GWF and GWS. Insights into GWF and GWS can form the basis for policy developments on N and P pollution mitigation across regions in China.
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影响因子：
5.1
作者：
J. Franke;C. Müller;J. Elliott;A. Ruane;J. Jägermeyr;J. Balkovič;P. Ciais;Marie Dury;P. Falloon-P.
通讯作者：
J. Franke;C. Müller;J. Elliott;A. Ruane;J. Jägermeyr;J. Balkovič;P. Ciais;Marie Dury;P. Falloon-P.
影响因子：
5.4
作者：
Hong Yang;A. Zehnder
通讯作者：
Hong Yang;A. Zehnder
DOI：
10.1073/pnas.1404749111
发表时间：
2014-07-08
影响因子：
11.1
作者：
Dalin, Carole;Hanasaki, Naota;Rodriguez-Iturbe, Ignacio
通讯作者：
Rodriguez-Iturbe, Ignacio
影响因子：
11.1
作者：
Bo Wu;W. Zeng;Honghan Chen;Yue Zhao
通讯作者：
Bo Wu;W. Zeng;Honghan Chen;Yue Zhao
DOI：
10.1073/pnas.1718153115
发表时间：
2018-05
期刊：
Proceedings of the National Academy of Sciences
影响因子：
--
作者：
Jing Sun;H. Mooney;Wenbin Wu;Huajun Tang;Yuxin Tong;Zhenci Xu;Baorong Huang;Yeqing Cheng;
通讯作者：
Jing Sun;H. Mooney;Wenbin Wu;Huajun Tang;Yuxin Tong;Zhenci Xu;Baorong Huang;Yeqing Cheng;