{"title":"Evolution and driving mechanism of runoff in the Han River basin from 1980 to 2020 under changing environments","authors":"Yulan Luo, Yuxin Liu, Yusheng Wang, Xin Lv, Chuanfu Zang","doi":"10.1002/eco.2708","DOIUrl":null,"url":null,"abstract":"<p>Recent studies in ecohydrology have focussed on the impact of climate and vegetation changes on runoff. To reveal the hydrological response mechanism under changing environments, this investigation explored the evolution and driving mechanism of <i>Q</i> (the mean annual runoff) in the Han River basin from 1980 to 2020 by combining the Budyko–Porporato–Guswa coupling model and the Soil and Water Assessment Tool (SWAT) model, with scenario analysis and statistical analysis. The results showed that (1) <i>Q</i> was 719.38 mm and showed a fluctuating trend from 1980 to 2020. The spatial distribution was characterised by the largest in the upper Mei River, the second in the Ting River, and the smallest in the lower Mei River and the upper-middle Han River. (2) <i>Q</i> increased with obvious spatial heterogeneity under the impact of climate change and the integrated impact of climate and vegetation changes. (3) <i>Q</i> had the strongest sensitivity to the change in <i>E</i><sub>0</sub>, followed by <i>P</i>, and the weakest was vegetation. <i>Q</i> and <i>E</i><sub>0</sub> showed a strong correlation. (4) The principal driver for the change in <i>Q</i> was climate change, and the impact of <i>P</i> was greater than <i>E</i><sub>0</sub>. The impact of vegetation variability was the smallest. This paper can serve as a reference for the research of hydrological response to changing environments and an academic foundation for the scheduling of water resources.</p>","PeriodicalId":55169,"journal":{"name":"Ecohydrology","volume":"17 8","pages":""},"PeriodicalIF":2.5000,"publicationDate":"2024-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Ecohydrology","FirstCategoryId":"93","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/eco.2708","RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ECOLOGY","Score":null,"Total":0}
引用次数: 0
Abstract
Recent studies in ecohydrology have focussed on the impact of climate and vegetation changes on runoff. To reveal the hydrological response mechanism under changing environments, this investigation explored the evolution and driving mechanism of Q (the mean annual runoff) in the Han River basin from 1980 to 2020 by combining the Budyko–Porporato–Guswa coupling model and the Soil and Water Assessment Tool (SWAT) model, with scenario analysis and statistical analysis. The results showed that (1) Q was 719.38 mm and showed a fluctuating trend from 1980 to 2020. The spatial distribution was characterised by the largest in the upper Mei River, the second in the Ting River, and the smallest in the lower Mei River and the upper-middle Han River. (2) Q increased with obvious spatial heterogeneity under the impact of climate change and the integrated impact of climate and vegetation changes. (3) Q had the strongest sensitivity to the change in E0, followed by P, and the weakest was vegetation. Q and E0 showed a strong correlation. (4) The principal driver for the change in Q was climate change, and the impact of P was greater than E0. The impact of vegetation variability was the smallest. This paper can serve as a reference for the research of hydrological response to changing environments and an academic foundation for the scheduling of water resources.
期刊介绍：
Ecohydrology is an international journal publishing original scientific and review papers that aim to improve understanding of processes at the interface between ecology and hydrology and associated applications related to environmental management.
Ecohydrology seeks to increase interdisciplinary insights by placing particular emphasis on interactions and associated feedbacks in both space and time between ecological systems and the hydrological cycle. Research contributions are solicited from disciplines focusing on the physical, ecological, biological, biogeochemical, geomorphological, drainage basin, mathematical and methodological aspects of ecohydrology. Research in both terrestrial and aquatic systems is of interest provided it explicitly links ecological systems and the hydrologic cycle; research such as aquatic ecological, channel engineering, or ecological or hydrological modelling is less appropriate for the journal unless it specifically addresses the criteria above. Manuscripts describing individual case studies are of interest in cases where broader insights are discussed beyond site- and species-specific results.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
