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Water scarcity-risk assessment in data-scarce river basins under decadal climate change using a hydrological modelling approach
Journal of Hydrology ( IF 6.4 ) Pub Date : 2020-11-01 , DOI: 10.1016/j.jhydrol.2020.125260 Sushree Swagatika Swain , Ashok Mishra , Bhabagrahi Sahoo , Chandranath Chatterjee
Journal of Hydrology ( IF 6.4 ) Pub Date : 2020-11-01 , DOI: 10.1016/j.jhydrol.2020.125260 Sushree Swagatika Swain , Ashok Mishra , Bhabagrahi Sahoo , Chandranath Chatterjee
Abstract Basin-scale water scarcity, an adverse consequence of the imbalance between the available fresh water and water demands, is an alarming situation in many countries worldwide. This necessitates for analyzing the risk of water scarcity forced with the changing climate, land-use alterations, growing population, and industrialization to pave a way for sustainable water resources systems planning and management. This study advocates a hydrological model-based evaluation approach employing Soil Water Assessment Tool (SWAT) to identify the dominating drivers on the decadal streamflow patterns and other basin-scale water balance components, viz., blue water flow (BWF), green water storage (GWS), and green water flow (GWF) in the Brahmani and Baitarani River basins of eastern India. The results reveal that, in these basins, the climate change effect has relatively a higher impact on streamflow than the land-use change. This study surmises that the Brahmani and Baitarani River basins can be categorized under the high- and moderate-risk water scarcity zones, respectively. The developed approach of assessing the water scarcity risk under the non-availability of basin-scale sectoral water demands could be a reliable tool for many data-scarce river basins worldwide.
中文翻译:
使用水文建模方法评估十年气候变化下数据稀缺流域的水资源短缺风险
摘要 流域尺度缺水是可用淡水与需水量失衡的不利后果,在全球许多国家都是一个令人担忧的情况。这需要分析因气候变化、土地利用变化、人口增长和工业化而导致的水资源短缺风险,为可持续水资源系统规划和管理铺平道路。本研究提倡采用基于水文模型的评估方法,采用土壤水评估工具 (SWAT) 来确定年代际河流流量模式和其他流域尺度水平衡分量的主要驱动因素,即蓝水流 (BWF)、绿水储存(GWS) 和印度东部婆罗门和白塔拉尼河流域的绿水流 (GWF)。结果表明,在这些盆地中,与土地利用变化相比,气候变化对径流的影响相对更大。本研究推测,婆罗门河流域和白塔拉尼河流域可分别归类为高风险和中风险水资源短缺区。在无法获得流域尺度部门用水需求的情况下评估缺水风险的已开发方法可能成为全球许多数据稀缺流域的可靠工具。
更新日期:2020-11-01
中文翻译:
使用水文建模方法评估十年气候变化下数据稀缺流域的水资源短缺风险
摘要 流域尺度缺水是可用淡水与需水量失衡的不利后果,在全球许多国家都是一个令人担忧的情况。这需要分析因气候变化、土地利用变化、人口增长和工业化而导致的水资源短缺风险,为可持续水资源系统规划和管理铺平道路。本研究提倡采用基于水文模型的评估方法,采用土壤水评估工具 (SWAT) 来确定年代际河流流量模式和其他流域尺度水平衡分量的主要驱动因素,即蓝水流 (BWF)、绿水储存(GWS) 和印度东部婆罗门和白塔拉尼河流域的绿水流 (GWF)。结果表明,在这些盆地中,与土地利用变化相比,气候变化对径流的影响相对更大。本研究推测,婆罗门河流域和白塔拉尼河流域可分别归类为高风险和中风险水资源短缺区。在无法获得流域尺度部门用水需求的情况下评估缺水风险的已开发方法可能成为全球许多数据稀缺流域的可靠工具。