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Multidecadal variability of the Tonle Sap Lake flood pulse regime

文献类型：期刊论文

作者Chen, Aifang2,5; Liu, Junguo2; Kummu, Matti1; Varis, Olli1; Tang, Qiuhong3,4; Mao, Ganquan2; Wang, Jie4; Chen, Deliang5
刊名HYDROLOGICAL PROCESSES
出版日期2021-09-01
卷号35期号:9页码:16
关键词Cambodia climate change inundation area Mekong water level
ISSN号0885-6087
DOI10.1002/hyp.14327
通讯作者Liu, Junguo(junguo.liu@gmail.com) ; Chen, Deliang(deliang@gvc.gu.se)
英文摘要Tonle Sap Lake (TSL) is one of the world's most productive lacustrine ecosystems, driven by the Mekong River's seasonal flood pulse. This flood pulse and its long-term dynamics under the Mekong River basin's (MRB) fast socio-economic development and climate change need to be identified and understood. However, existing studies fall short of sufficient time coverage or concentrate only on changes in water level (WL) that is only one of the critical flood pulse parameters influencing the flood pulse ecosystem productivity. Considering the rapidly changing hydroclimatic conditions in the Mekong basin, it is crucial to systematically analyse the changes in multiple key flood pulse parameters. Here, we aim to do that by using observed WL data for 1960-2019 accompanied with several parameters derived from a Digital Bathymetry Model. Results show significant declines of WL and inundation area from the late 1990s in the dry season and for the whole year, on top of increased subdecadal variability. Decreasing (increasing) probabilities of high (low) inundation area for 2000-2019 have been found, in comparison to the return period of inundation area for 1986-2000 (1960-1986). The mean seasonal cycle of daily WL in dry (wet) season for 2000-2019, compared to that for 1986-2000, has shifted by 10 (5) days. Significant correlations and coherence changes between the WL and large-scale circulations (i.e., El Nino-Southern Oscillation (ENSO), Pacific Decadal Oscillation (PDO) and Indian Ocean Dipole (IOD)), indicate that the atmospheric circulations could have influenced the flood pulse in different time scales. Also, the changes in discharge at the Mekong mainstream suggest that anthropogenic drivers may have impacted the high water levels in the lake. Overall, our results indicate a declining flood pulse since the late 1990s.
WOS关键词MEKONG RIVER-BASIN ; WATER INFRASTRUCTURE DEVELOPMENT ; ASIAN SUMMER MONSOON ; CLIMATE-CHANGE ; HYDROLOGICAL ALTERATIONS ; SOUTHEAST-ASIA ; EL-NINO ; HYDROPOWER ; CAMBODIA ; IMPACT
资助项目Strategic Priority Research Program of Chinese Academy of Sciences[XDA20060402] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDA20060401] ; China Scholarship Council ; National Natural Science Foundation of China[91537210] ; Swedish STINT[CH2019-8377] ; High-level Special Funding of the Southern University of Science and Technology[G02296302] ; High-level Special Funding of the Southern University of Science and Technology[G02296402] ; Aalto University ; Academy of Finland[305471] ; European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme[819202]
WOS研究方向Water Resources
语种英语
WOS记录号WOS:000700789300021
出版者WILEY
资助机构Strategic Priority Research Program of Chinese Academy of Sciences ; China Scholarship Council ; National Natural Science Foundation of China ; Swedish STINT ; High-level Special Funding of the Southern University of Science and Technology ; Aalto University ; Academy of Finland ; European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme
源URL[http://ir.igsnrr.ac.cn/handle/311030/165765]  
专题中国科学院地理科学与资源研究所
通讯作者Liu, Junguo; Chen, Deliang
作者单位1.Aalto Univ, Water & Dev Res Grp, Aalto, Finland
2.Southern Univ Sci & Technol, Sch Environm Sci & Engn, Shenzhen 518055, Peoples R China
3.Univ Chinese Acad Sci, Beijing, Peoples R China
4.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proce, Beijing, Peoples R China
5.Univ Gothenburg, Dept Earth Sci, Reg Climate Grp, S-40530 Gothenburg 7, Sweden
推荐引用方式
GB/T 7714		 Chen, Aifang,Liu, Junguo,Kummu, Matti,et al. Multidecadal variability of the Tonle Sap Lake flood pulse regime[J]. HYDROLOGICAL PROCESSES,2021,35(9):16.
APA Chen, Aifang.,Liu, Junguo.,Kummu, Matti.,Varis, Olli.,Tang, Qiuhong.,...&Chen, Deliang.(2021).Multidecadal variability of the Tonle Sap Lake flood pulse regime.HYDROLOGICAL PROCESSES,35(9),16.
MLA Chen, Aifang,et al."Multidecadal variability of the Tonle Sap Lake flood pulse regime".HYDROLOGICAL PROCESSES 35.9(2021):16.

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来源：地理科学与资源研究所

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