基于图论和滨水可达性的生态水文连通方案优化框架

IF 4.7 2区 地球科学 Q1 WATER RESOURCES
Yuping Han , Yao Xu , Runxiang Cao , Zhongpei Liu
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引用次数: 0

摘要

研究区域贾鲁河郑州段.研究重点本研究选择贾鲁河郑州段,基于图论构建流域河网图模型,该模型能够描述引水节点的水量分配和水量平衡关系,旨在最大化生态景观面积。在优化方案中,从 5 个引水节点到下游河段的流量分布在 0.2 到 0.8 之间,使 20 个河段的景观面积发生了显著变化。优化方案下的生态景观面积为 31.06 平方公里,比最差方案多 0.03 平方公里。水系连通性分配在考虑滨水可达性前后保持一致,考虑滨水可达性后的最优加权景观面积为 12.69 平方公里。考虑到滨水区的可达性,水系连通方案的重心前后发生了显著变化。研究成果可为区域生态文明建设提供理论支撑。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Optimization framework for eco-hydrological connectivity schemes based on graph theory and waterfront accessibility

Study Region

Zhengzhou section of the Jialu River.

Study Focus

In this study, the Zhengzhou section of the Jialu River was chosen to construct a watershed river network graph model based on graph theory, and this model could describe water volume distribution at diversion nodes and water balance relationships, which aimed to maximize the ecological landscape area. Considering residential aggregation along riverbanks, a waterfront accessibility matrix was used to derive an optimized water system connectivity scheme based on flow allocation at diversion nodes.

New Hydrological Insights for the Region

In the optimized scheme, flow distribution from 5 diversion nodes to downstream river sections ranged from 0.2 to 0.8, resulting in significant changes in the landscape area of 20 river segments. The ecological landscape area under the optimal scenario was 31.06 km2, which was 0.03 km2 more than the worst-case scenario. The water system connectivity allocation remained consistent before and after considering waterfront accessibility, and the optimal weighted landscape area was 12.69 km2 with waterfront accessibility in mind. Considering the accessibility of waterfront areas, the center of gravity of the water system connectivity scheme shad undergone a significant change before and after. The research results could provide theoretical support for the construction of regional ecological civilization.

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来源期刊
Journal of Hydrology-Regional Studies
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.
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