Scale-dependent flood response to land use dynamics in the Jinxiuchuan Reservoir watershed, China

IF 5 2区地球科学 Q1 WATER RESOURCES

Journal of Hydrology-Regional Studies Pub Date : 2026-04-01 Epub Date: 2026-01-27 DOI:10.1016/j.ejrh.2026.103182

Yinuo Wang , Yufei Jiao , Xiaonong Hu , Chuanshun Zhi , Fulin Li , Jiahao Cheng

{"title":"Scale-dependent flood response to land use dynamics in the Jinxiuchuan Reservoir watershed, China","authors":"Yinuo Wang , Yufei Jiao , Xiaonong Hu , Chuanshun Zhi , Fulin Li , Jiahao Cheng","doi":"10.1016/j.ejrh.2026.103182","DOIUrl":null,"url":null,"abstract":"<div><h3>Study region</h3><div>Jinxiuchuan Reservoir watershed (JRW), located in the southern mountainous area of Jinan City, Shandong Province, China.</div></div><div><h3>Study focus</h3><div>This study investigates the flood response to land use/land cover (LULC) changes in the JRW. Using the distributed HEC-HMS hydrological model, flood simulations were conducted at both the watershed and sub-watershed scales under four LULC scenarios for 1990, 2000, 2010, and 2020, quantifying the impacts of urbanization-induced LULC changes on flood volume and peak discharge.</div></div><div><h3>New hydrological insights for the region</h3><div>The results reveal distinct differences in the response magnitude of floods of different sizes under LULC changes, as well as pronounced spatial heterogeneity at the sub-watershed scale. At the watershed scale, LULC changes exert the strongest influence on small-volume and small-peak floods, while large-magnitude floods show weaker responses. At the sub-watershed scale, the southern sub-watersheds exhibit stronger responses due to more substantial land cover changes. Additionally, CN values and impervious surface ratios show overall significant positive correlations at the watershed scale, with stronger relationships for small- and medium-magnitude floods, but weaker for large floods. In sub-watershed W410, a localized deviation was observed, characterized by a slight increase in impervious surface ratio and a marginal decrease in CN, which is consistent with the spatial heterogeneity of hydrological responses under mixed land surface conditions.</div></div>","PeriodicalId":48620,"journal":{"name":"Journal of Hydrology-Regional Studies","volume":"64 ","pages":"Article 103182"},"PeriodicalIF":5.0000,"publicationDate":"2026-04-01","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/S2214581826000807","RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2026/1/27 0:00:00","PubModel":"Epub","JCR":"Q1","JCRName":"WATER RESOURCES","Score":null,"Total":0}

引用次数: 0

Abstract

Study region

Jinxiuchuan Reservoir watershed (JRW), located in the southern mountainous area of Jinan City, Shandong Province, China.

Study focus

This study investigates the flood response to land use/land cover (LULC) changes in the JRW. Using the distributed HEC-HMS hydrological model, flood simulations were conducted at both the watershed and sub-watershed scales under four LULC scenarios for 1990, 2000, 2010, and 2020, quantifying the impacts of urbanization-induced LULC changes on flood volume and peak discharge.

New hydrological insights for the region

The results reveal distinct differences in the response magnitude of floods of different sizes under LULC changes, as well as pronounced spatial heterogeneity at the sub-watershed scale. At the watershed scale, LULC changes exert the strongest influence on small-volume and small-peak floods, while large-magnitude floods show weaker responses. At the sub-watershed scale, the southern sub-watersheds exhibit stronger responses due to more substantial land cover changes. Additionally, CN values and impervious surface ratios show overall significant positive correlations at the watershed scale, with stronger relationships for small- and medium-magnitude floods, but weaker for large floods. In sub-watershed W410, a localized deviation was observed, characterized by a slight increase in impervious surface ratio and a marginal decrease in CN, which is consistent with the spatial heterogeneity of hydrological responses under mixed land surface conditions.

查看原文本刊更多论文

金秀川水库流域土地利用动态的尺度依赖性洪水响应

研究区金秀川水库流域位于山东省济南市南部山区。研究重点：本研究探讨了JRW地区土地利用/土地覆盖（LULC）变化对洪水的响应。利用分布式HEC-HMS水文模型，对1990年、2000年、2010年和2020年4个城市LULC情景下的流域和次流域尺度的洪水进行了模拟，量化了城市化诱发的LULC变化对洪量和洪峰流量的影响。研究结果表明，不同规模洪水在LULC变化下的响应强度存在显著差异，且在小流域尺度上存在明显的空间异质性。在流域尺度上，LULC变化对小体积、小峰洪水的影响最大，而大震级洪水的响应较弱。在小流域尺度上，南部小流域由于土地覆被变化更大而表现出更强的响应。此外，CN值与不透水面比在流域尺度上总体呈显著正相关，在中小洪水中相关性较强，在大洪水中相关性较弱。W410子流域不透水面率略有上升，CN略有下降，存在局部偏差，这与混合陆面条件下水文响应的空间异质性相一致。

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.