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Efficient irrigation water allocation and its impact on agricultural sustainability and water scarcity under uncertainty

机译：高效灌溉水分配及其对不确定性下的农业可持续性和水资源稀缺的影响

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摘要

Agriculture is a key economic sector in developing countries that are facing challenges of low efficiency of water resources utilization and of shrinking water supply. This study develops an optimization model for the allocation of agricultural irrigation water to improve irrigation water use efficiency (IWUE), considering uncertainties of fluctuating water supply. Then, it assesses the impact of efficient water allocation on the sustainability and water scarcity under different levels of water supply. This study can help answer questions as to how to optimal allocate limited water supplies to different crops and different subareas under uncertainty to improve IWUE, how water shortage affects economic, social, and environmental aspects, and what the relationship between system sustainability and water shortage is. To demonstrate its feasibility, the proposed models are applied to an irrigation district in northeastern China. These models can also be applied to other regions that suffer from water scarcity. Results of application are found to be satisfactory for explaining the impact of agricultural irrigation water allocation on net economic benefit, water resources allocation equity, total greenhouse gas emissions, and water scarcity footprint under different water supply conditions. This study provides insights into tradeoffs amongst resources, economy, society, and environment in irrigated agricultural systems under uncertainty.
机译：农业是发展中国家的主要经济部门，面临水资源利用率和萎缩供水的挑战。本研究开发了农业灌溉用水分配优化模型，以改善灌溉用水效率（IWUE），考虑到水供应的不确定性。然后，它评估了有效的水分配对不同水平的可持续性和水资源稀缺的影响。本研究可以帮助回答如何在不确定性下，如何最佳地将有限的水供应与不同作物和不同的蛛网进行改善，以改善IWUE，水资源短缺如何影响经济，社会和环境方面，以及系统可持续性和水资源短缺之间的关系是什么。为了证明其可行性，拟议的模型适用于中国东北部的灌溉区。这些模型也可以应用于患有水资源短缺的其他地区。发现申请结果令人满意，用于解释不同供水条件下的农业灌溉水分配对农业灌溉水分配，水资源分配股权，总温室气体排放和水资源短缺的影响。本研究在不确定下，在灌溉农业系统中的资源，经济，社会和环境中的权衡中提供了洞察力。

著录项

  • 来源
    《Journal of Hydrology》 |2020年第2020期|共12页
  • 作者

    Li Mo; Xu Yaowen; Fu Qiang; Singh Vijay P.; Liu Dong; Li Tianxiao;

  • 作者单位

    Northeast Agr Univ Sch Water Conservancy &

    Civil Engn Harbin 150030 Heilongjiang Peoples R China;

    Northeast Agr Univ Sch Water Conservancy &

    Civil Engn Harbin 150030 Heilongjiang Peoples R China;

    Northeast Agr Univ Sch Water Conservancy &

    Civil Engn Harbin 150030 Heilongjiang Peoples R China;

    Texas A&

    M Univ Dept Biol &

    Agr Engn College Stn TX 77843 USA;

    Northeast Agr Univ Sch Water Conservancy &

    Civil Engn Harbin 150030 Heilongjiang Peoples R China;

    Northeast Agr Univ Sch Water Conservancy &

    Civil Engn Harbin 150030 Heilongjiang Peoples R China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 水文科学（水界物理学）;
  • 关键词

    Irrigation water; Modelling; Sustainability; Water scarcity; Uncertainty;

    机译：灌溉水;建模;可持续性;水资源稀缺;不确定性;

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