Earlier vegetation green-up is intensifying hydrological drought in the Tianshan Mountain basins

IF 4.7 2区 地球科学 Q1 WATER RESOURCES
Lilin Zheng , Ruishan Chen , Jianhua Xu , Yinshuai Li , Nan Jia , Xiaona Guo
{"title":"Earlier vegetation green-up is intensifying hydrological drought in the Tianshan Mountain basins","authors":"Lilin Zheng ,&nbsp;Ruishan Chen ,&nbsp;Jianhua Xu ,&nbsp;Yinshuai Li ,&nbsp;Nan Jia ,&nbsp;Xiaona Guo","doi":"10.1016/j.ejrh.2025.102321","DOIUrl":null,"url":null,"abstract":"<div><h3>Study region</h3><div>Two inland basins in the Tianshan Mountains: the Huangshui Basin (HSB) and the Kashi Basin (KSB).</div></div><div><h3>Study focus</h3><div>Earlier green-up driven by climate warming can profoundly alter hydrological processes. However, the isolated impact of phenological changes on hydrological dynamics, independent of climatic factors, remains largely unexplored. To address this gap, we quantified the contributions of earlier green-up to evapotranspiration (ET) and basin streamflow by developing a framework that integrates an NDPI-based phenology model with the RHESSys eco-hydrological model.</div></div><div><h3>New hydrological insights for the region</h3><div>Between 2001 and 2020, the start of the growing season (SOS) advanced at rates of 1.02 days/year in HSB and 0.97 days/year in KSB, while changes in the end of the growing season were minimal (0.17 and − 0.12 days/year, respectively). In HSB, each one-day advancement in green-up increased ET by 2.22 mm and reduced streamflow discharge by 2.35 million m³. In contrast, in KSB, a one-day advancement in green-up resulted in a more significant increase in ET (11.22 mm) and a more substantial reduction in streamflow discharge (58.24 million m³). KSB's westward-facing topography facilitates the inflow of warm, humid Atlantic air, contributing to a more humid climate, higher vegetation cover, and an earlier SOS compared to HSB. These findings highlight the importance of incorporating phenological dynamics into eco-hydrological assessments to develop effective climate adaptation strategies for inland mountain basins.</div></div>","PeriodicalId":48620,"journal":{"name":"Journal of Hydrology-Regional Studies","volume":"59 ","pages":"Article 102321"},"PeriodicalIF":4.7000,"publicationDate":"2025-03-22","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/S2214581825001454","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

Two inland basins in the Tianshan Mountains: the Huangshui Basin (HSB) and the Kashi Basin (KSB).

Study focus

Earlier green-up driven by climate warming can profoundly alter hydrological processes. However, the isolated impact of phenological changes on hydrological dynamics, independent of climatic factors, remains largely unexplored. To address this gap, we quantified the contributions of earlier green-up to evapotranspiration (ET) and basin streamflow by developing a framework that integrates an NDPI-based phenology model with the RHESSys eco-hydrological model.

New hydrological insights for the region

Between 2001 and 2020, the start of the growing season (SOS) advanced at rates of 1.02 days/year in HSB and 0.97 days/year in KSB, while changes in the end of the growing season were minimal (0.17 and − 0.12 days/year, respectively). In HSB, each one-day advancement in green-up increased ET by 2.22 mm and reduced streamflow discharge by 2.35 million m³. In contrast, in KSB, a one-day advancement in green-up resulted in a more significant increase in ET (11.22 mm) and a more substantial reduction in streamflow discharge (58.24 million m³). KSB's westward-facing topography facilitates the inflow of warm, humid Atlantic air, contributing to a more humid climate, higher vegetation cover, and an earlier SOS compared to HSB. These findings highlight the importance of incorporating phenological dynamics into eco-hydrological assessments to develop effective climate adaptation strategies for inland mountain basins.
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
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.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信