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Response of streamflow to environmental changes: A Budyko-type analysis based on 144 river basins over China
Li, Yanzhong1; Liu, Changming1,2; Yu, Wenjun1; Tian, Di3; Bai, Peng2
2019-05-10
Source PublicationSCIENCE OF THE TOTAL ENVIRONMENT
ISSN0048-9697
Volume664Pages:824-833
Corresponding AuthorYu, Wenjun(wj.yu@nuist.edu.cn)
AbstractUnderstanding response of streamflow to environmental changes is crucial for large-scale water resources management and ecosystem restoration. There is no consensus on how environmental change influence streamflow in different regions across climate gradient, as previous studies mainly focused on a single river basin or climate region. This study analyzed the variations of aridity index and its contributions to streamflow change based on Budyko's framework approach using bias-corrected precipitation measurement, parameters-optimized potential evapotranspiration and observed streamflow in 144 basins across China. The parameter n in the Budyko type equation exhibits significant spatial heterogeneity, with larger values in the water-limited region than in the energy-limited region, which suggests more pronounced impact of basin characteristic or vegetation change on hydrological cycle. The absolute value of sensitivity coefficient in the water-limited region (-256) was larger than both equitant (-2.13) and energy limited region (-1.57), indicating that the streamflow was more sensitive to aridity index change in the water-limited region than in the equitant and energy-limited regions. The dominant factor affecting streamflow under energy-limited and equitant conditions is aridity index (i.e. climate change), with median relative contribution rates of 79.9% and 55.5%, respectively. In contrast, non-climatic factors dominate the variation of streamflow in the water-limited region, the effect of climate change on streamflow has been offset by other factors. This study suggests that the water management practices, such as water diversion across river basins and ecological restorations, should fully consider the differences in hydrological responses to climatic conditions. (C) 2019 Elsevier B.V. All rights reserved.
KeywordAridity index Budyko analysis Climate regions Environmental change Sensitivity analysis
DOI10.1016/j.scitotenv.2019.02.011
WOS KeywordCLIMATE VARIABILITY ; POTENTIAL EVAPORATION ; HYDROLOGICAL CYCLE ; GLOBAL ASSESSMENT ; TIBETAN PLATEAU ; WATER-BALANCE ; ARID REGION ; RUNOFF ; EVAPOTRANSPIRATION ; PRECIPITATION
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[41701019] ; Startup Foundation for Introducing Talent of Nanjing University of Information Science Technology[2017r069] ; Key Laboratory of Water Cycle and Related Land Surface Processes, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences[WL2017004]
Funding OrganizationNational Natural Science Foundation of China ; Startup Foundation for Introducing Talent of Nanjing University of Information Science Technology ; Key Laboratory of Water Cycle and Related Land Surface Processes, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEnvironmental Sciences
WOS IDWOS:000460245600078
PublisherELSEVIER SCIENCE BV
Citation statistics
Cited Times:6[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/49160
Collection中国科学院地理科学与资源研究所
Corresponding AuthorYu, Wenjun
Affiliation1.Nanjing Univ Informat Sci & Technol, Sch Hydrol & Water Resources, Nanjing 210044, Jiangsu, Peoples R China
2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
3.Auburn Univ, Dept Crop Soil & Environm Sci, Auburn, AL 36849 USA
Recommended Citation
GB/T 7714
Li, Yanzhong,Liu, Changming,Yu, Wenjun,et al. Response of streamflow to environmental changes: A Budyko-type analysis based on 144 river basins over China[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2019,664:824-833.
APA Li, Yanzhong,Liu, Changming,Yu, Wenjun,Tian, Di,&Bai, Peng.(2019).Response of streamflow to environmental changes: A Budyko-type analysis based on 144 river basins over China.SCIENCE OF THE TOTAL ENVIRONMENT,664,824-833.
MLA Li, Yanzhong,et al."Response of streamflow to environmental changes: A Budyko-type analysis based on 144 river basins over China".SCIENCE OF THE TOTAL ENVIRONMENT 664(2019):824-833.
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