Runoff reduction impacts riparian zone ecological security in the terminal reservoir of the central line of the South-to-North Water Diversion Project, China

IF 4.7 2区地球科学 Q1 WATER RESOURCES

Journal of Hydrology-Regional Studies Pub Date : 2025-03-27 DOI:10.1016/j.ejrh.2025.102342

Shengtian Yang , Huaixing Wang , Jianxin Ding , Hezhen Lou , Zihao Pan , Baichi Zhou , Jiyi Gong , Yulian Wang , Hao Li , Yunmeng Dai , Jiekang Li , Yifan Zhu , Danyang Feng , Sailong Wu

{"title":"Runoff reduction impacts riparian zone ecological security in the terminal reservoir of the central line of the South-to-North Water Diversion Project, China","authors":"Shengtian Yang , Huaixing Wang , Jianxin Ding , Hezhen Lou , Zihao Pan , Baichi Zhou , Jiyi Gong , Yulian Wang , Hao Li , Yunmeng Dai , Jiekang Li , Yifan Zhu , Danyang Feng , Sailong Wu","doi":"10.1016/j.ejrh.2025.102342","DOIUrl":null,"url":null,"abstract":"<div><h3>Study region</h3><div>The Miyun Reservoir (the terminal reservoir of the central line of the South-to-North Water Diversion Project, SNWDP) and the upstream watershed of the Miyun Reservoir (uwMR) in China.</div></div><div><h3>Study focus</h3><div>Under the influence of runoff, water intake and water diversion, the water level of the terminal reservoir of the interbasin water diversion project greatly fluctuates, which poses a threat to the ecological security of the riparian zone. Therefore, the impact of runoff reduction on the ecological security of the riparian zone of the terminal reservoir must be evaluated. This study focuses on the Miyun Reservoir and the uwMR, and the impact of upstream runoff reduction on the ecological security of the riparian zone is systematically evaluated.</div></div><div><h3>New hydrological insights for the region</h3><div>Runoff in each subbasin of the uwMR is decreasing, with climate change as the primary driver (66.69 %). As water consumption increases (0.44 × 10<sup>8</sup> m³/a) and water diversion reaches its upper limit (12.4 × 10<sup>8</sup> m<sup>3</sup>) by 2028, the riparian zone of the Miyun Reservoir will exhibit significant exposure (45.08 km<sup>2</sup>) by 2041. However, vegetation restoration is slow, requiring 19 years to stabilize, which poses a threat to riparian zone ecological security. Therefore, enhancing vegetation monitoring and implementing active restoration measures are essential. The findings offer valuable guidance for protecting the riparian ecosystems of terminal reservoirs of interbasin water transfer projects.</div></div>","PeriodicalId":48620,"journal":{"name":"Journal of Hydrology-Regional Studies","volume":"59 ","pages":"Article 102342"},"PeriodicalIF":4.7000,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Hydrology-Regional Studies","FirstCategoryId":"89","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2214581825001673","RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"WATER RESOURCES","Score":null,"Total":0}

引用次数: 0

Abstract

Study region

The Miyun Reservoir (the terminal reservoir of the central line of the South-to-North Water Diversion Project, SNWDP) and the upstream watershed of the Miyun Reservoir (uwMR) in China.

Study focus

Under the influence of runoff, water intake and water diversion, the water level of the terminal reservoir of the interbasin water diversion project greatly fluctuates, which poses a threat to the ecological security of the riparian zone. Therefore, the impact of runoff reduction on the ecological security of the riparian zone of the terminal reservoir must be evaluated. This study focuses on the Miyun Reservoir and the uwMR, and the impact of upstream runoff reduction on the ecological security of the riparian zone is systematically evaluated.

New hydrological insights for the region

Runoff in each subbasin of the uwMR is decreasing, with climate change as the primary driver (66.69 %). As water consumption increases (0.44 × 10⁸ m³/a) and water diversion reaches its upper limit (12.4 × 10⁸ m³) by 2028, the riparian zone of the Miyun Reservoir will exhibit significant exposure (45.08 km²) by 2041. However, vegetation restoration is slow, requiring 19 years to stabilize, which poses a threat to riparian zone ecological security. Therefore, enhancing vegetation monitoring and implementing active restoration measures are essential. The findings offer valuable guidance for protecting the riparian ecosystems of terminal reservoirs of interbasin water transfer projects.

查看原文本刊更多论文

南水北调中线末端水库径流减少对河岸带生态安全的影响

研究区域：中国南水北调中线末端水库密云水库及密云水库上游流域。研究重点跨流域调水工程终端水库在径流、取水和引水的影响下，水位波动较大，对河岸带生态安全构成威胁。因此，必须评估径流减少对终端水库河岸带生态安全的影响。本研究以密云水库和三峡库区为研究对象，系统评价了上游径流减少对河岸带生态安全的影响。uwMR各次流域径流量呈减少趋势，气候变化是主要驱动因素（66.69 %）。随着2028年水库耗水量增加（0.44 × 108 m³/a）和引水量达到上限（12.4 × 108 m3）， 2041年密云水库河岸带将出现显著暴露（45.08 km2）。但植被恢复缓慢，需要19年才能稳定，对河岸带生态安全构成威胁。因此，加强植被监测，实施积极的恢复措施至关重要。研究结果对跨流域调水工程末端水库河岸生态系统的保护具有重要的指导意义。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

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.