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Virtual water output intensifies the water scarcity in Northwest China: Current situation, problem analysis and countermeasures

机译：虚拟水量加剧了中国西北部的水资源稀缺性：现状，问题分析及对策

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摘要

With 80% water resources in the south and 65% arable land in the north, China is facing a rigorous challenge due to the spatial mismatch between water distribution and food & energy production to make a balanced development of economy and ecosystem. In the past decades, the northwest has played a prominent role in maintaining national food and energy security. However, the lack of water resources in this region poses a great threat to sustainable development. Based on this, this study quantitatively analyzed the evolution trend of water footprint (WF) of major crops and energy products in Northwest China from 2000 to 2015 and revealed the virtual water (VW) transfer pattern with commodity trade and its water resource stress caused by the virtual water output. The results show that, although the improvement of technology has greatly reduced the WF per unit production, the northwest region is still a net VW output area, whose net VW output associated with food and energy trade is increasing sharply from 287.2 × 10~8 m~3 (2000) to 328.5 × 10~8 m~3 (2015) with a growth rate of 14.4%, seriously aggravating the local water resource pressure. To ensure the water, food and energy safety of the northwest, we proposed countermeasures and suggestions on technological development and strategic planning, including water-saving technology promotion, industrial and agricultural structure optimization, and the coordinated management of physical and virtual water. The above findings provide a scientific reference to ensure the sustainable development of Northwest China.
机译：由于水分配和食品能源生产之间的空间不匹配，北方南部80％的水资源占南部的80％，北方65％耕地，迎接经济与生态系统的平衡发展，中国面临着严峻的挑战。在过去的几十年中，西北部在维持国家食品和能源安全方面发挥了突出作用。然而，该地区缺乏水资源对可持续发展构成了巨大威胁。基于这一点，本研究定量分析了2000年至2015年西北地区主要作物和能源产品水脚印（WF）的进化趋势，并揭示了商品贸易的虚拟水（VW）转移模式及其水资源应力虚拟水输出。结果表明，虽然技术的改善大大降低了每单位产量的WF，但西北地区仍然是一个净大众输出区域，其净大众输出与食品和能源贸易相关的幅度从287.2×10〜8米急剧增加。 〜3（2000）至328.5×10〜8 m〜3（2015），增长率为14.4％，严重加重当地水资源压力。为确保西北地区的水，食品和能源安全，我们提出了关于技术发展和战略规划的对策和建议，包括节水技术推广，工业和农业结构优化以及物理和虚拟水的协调管理。以上调查结果提供了一种科学的参考，以确保中国西北部的可持续发展。

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  • 来源
    《Science of the total environment》 |2021年第15期|144276.1-144276.12|共12页
  • 作者

    Xinxueqi Han; Yong Zhao; Xuerui Gao; Shan Jiang; Lixing Lin; Tingli An;

  • 作者单位

    College of Water Resources and Architectural Engineering Northwest A&F University Yangling Shaanxi 712100 China;

    State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin China Institute of Water Resources and Hydropower Research Beijing 100038 China;

    Institute of Soil and Water Conservation Northwest A&F University Yangling Shaanxi 712100 China;

    State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin China Institute of Water Resources and Hydropower Research Beijing 100038 China;

    College of Water Resources and Architectural Engineering Northwest A&F University Yangling Shaanxi 712100 China;

    College of Water Resources and Architectural Engineering Northwest A&F University Yangling Shaanxi 712100 China;

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

    Water footprint; Virtual water; Water-energy-food; Water stress; Sustainability assessment; Northwest China;

    机译：水脚印;虚拟水;水能食物;水胁迫;可持续发展评估;中国西北部;

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