The water footprint and validity analysis of ecological engineering in North Beijing, China

文献类型： 外文期刊

第一作者： Liang, Long

作者： Liang, Long;Wu, Wenliang;Li, Li;Feng, Dangyang;Peng, Peng;Zhao, Guishen;Lal, Rattan;Ridoutt, Bradley G.;Du, Zhangliu;Wang, Liyuan;Hang, Sheng

作者机构：

关键词： Agriculture;Life cycle assessment;Rice;Maize;Water quality;Water scarcity;Water use

期刊名称：JOURNAL OF CLEANER PRODUCTION （ 影响因子：9.297； 五年影响因子：9.444 ）

ISSN： 0959-6526

年卷期： 2018 年 172 卷

页码：

收录情况： SCI

摘要： Much of North China, including the Beijing municipality, is impacted by high levels of water scarcity. As a countermeasure, since the 1990s, Beijing and Hebei Provinces have jointly initiated a series of ecological engineering programs that have the potential to be replicated throughout the region. This study reports on an evaluation of one such program - the Paddy Land-to-Dry Land (PLDL) program - that operated between 2006 and 2015 and involved an incentive payment to farmers to cultivate spring maize instead of paddy rice. The evaluation included a range of water consumption and water degradation indicators based on water footprint and life cycle assessment methodologies. The program was found to be a success in reducing irrigation water demand in each of the three counties where it was implemented: Chicheng, Fengning and Luanping. However, assessment by various indicators, such as the grey water footprint, freshwater eutrophication potential and freshwater ecosystem quality, indicated potential increased risks to water quality, largely related to the higher applications of fertilizer associated with maize cropping. This study demonstrates the importance of using a broad range of indicators when evaluating an ecological engineering project, as well as the potential for such programs to have unintended negative impacts. (C) 2017 Elsevier Ltd. All rights reserved.

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