供水服务中供应-流量-需求的量化和分类

IF 5 2区地球科学 Q1 WATER RESOURCES

Journal of Hydrology-Regional Studies Pub Date : 2025-09-30 DOI:10.1016/j.ejrh.2025.102794

Shi Chen , Dongjie Guan , Lilei Zhou , Jiameng Cao , Zhifeng Liu

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引用次数: 0

摘要

研究区域：中国长江流域。研究重点供水服务的供需过程直接影响区域水资源的可持续发展。本研究建立了大流域水土评价工具（SWAT）模型，模拟了流域土壤水分的供给。评价了竞争性和非竞争性需水量，确定了影响需水量的主要因素。在业务路径分布网络（service path distribution network， SPAN）模型的基础上，引入了一种新的wss流分类标准，明确了5种流类型，并探讨了wss的流特性。建立的水文学供需评价模型在长江流域具有较好的适用性。强调非竞争性需求有助于对水的供应和需求状况进行更全面的评估。供给和需求均表现出明显的时空异质性。供给总量、竞争需求总量和非竞争需求总量分别增长36.88 %、2.11 %和11. %。5种流型的流动顺序为：保护>； 增益>； 衰减>； 无损失>； 堵塞，且各流型的流量均有所增加。本文提出的wss流量分类识别方法可有效分析流域水资源状况，为长江三角洲水资源可持续发展提供科学依据。

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Quantification and classification of supply-flow-demand in the water supply services

Study region

The Yangtze River Basin (YRB), China.

Study focus

The supply-flow-demand process of water supply services (WSSs) directly affects the sustainable development of regional water resources. In this study, a large basin soil and water assessment tool (SWAT) model was constructed to simulate the supply of WSSs. The competitive and non-competitive water demands were evaluated, and the primary factors influencing water demand were identified. On the basis of the service path distribution network (SPAN) model, a new standard for classifying WSSs flows was introduced, five flow types were clearly defined, and the flow characteristics of WSSs were explored.

New hydrological insights

The constructed WSSs supply and demand assessment model has good applicability in the YRB. Emphasizing non-competitive demand can help provide a more comprehensive assessment of the water supply and demand status. Both supply and demand clearly exhibit spatiotemporal heterogeneity. The total amounts of supply, competitive demand and non-competitive demand have increased by 36.88 %, 2.11 % and 11.5 % respectively. The flow order of the five flow types was: protection > gain > attenuation > non-loss > jam, and the flow rate of all types increased. The proposed classification and identification method for WSSs flow can be used to analyze the water resource status of a basin effectively and provide a scientific basis for the sustainable development of water resources in the YRB.

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来源期刊

Journal of Hydrology-Regional Studies Earth and Planetary Sciences-Earth and Planetary Sciences (miscellaneous)

CiteScore

6.70

自引率

8.50%

发文量

284

审稿时长

60 days

期刊介绍： Journal of Hydrology: Regional Studies publishes original research papers enhancing the science of hydrology and aiming at region-specific problems, past and future conditions, analysis, review and solutions. The journal particularly welcomes research papers that deliver new insights into region-specific hydrological processes and responses to changing conditions, as well as contributions that incorporate interdisciplinarity and translational science.