气候变化领域集成服务门户(CCPortal): Aerial and surface rivers: Downwind impacts on water availability from land use changes in Amazonia

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DOI	10.5194/hess-22-911-2018
	Aerial and surface rivers: Downwind impacts on water availability from land use changes in Amazonia
	Weng W.; Luedeke M.; Zemp D.; Lakes T.; Kropp J.
发表日期	2018
ISSN	1027-5606
起始页码	911
结束页码	927
卷号	22 期号:1
英文摘要	The abundant evapotranspiration provided by the Amazon forests is an important component of the hydrological cycle, both regionally and globally. Since the last century, deforestation and expanding agricultural activities have been changing the ecosystem and its provision of moisture to the atmosphere. However, it remains uncertain how the ongoing land use change will influence rainfall, runoff, and water availability as findings from previous studies differ. Using moisture tracking experiments based on observational data, we provide a spatially detailed analysis recognizing potential teleconnection between source and sink regions of atmospheric moisture. We apply land use scenarios in upwind moisture sources and quantify the corresponding rainfall and runoff changes in downwind moisture sinks. We find spatially varying responses of water regimes to land use changes, which may explain the diverse results from previous studies. Parts of the Peruvian Amazon and western Bolivia are identified as the sink areas most sensitive to land use change in the Amazon and we highlight the current water stress by Amazonian land use change on these areas in terms of the water availability. Furthermore, we also identify the influential source areas where land use change may considerably reduce a given target sink's water reception (from our example of the Ucayali River basin outlet, rainfall by 5–12ĝ€% and runoff by 19–50ĝ€% according to scenarios). Sensitive sinks and influential sources are therefore suggested as hotspots for achieving sustainable land–water management. © Author(s) 2018. This work is distributed under.
语种	英语
scopus关键词	Deforestation; Ecosystems; Moisture; Rain; Runoff; Water management; Water resources; Watersheds; Agricultural activities; Atmospheric moisture; Hydrological cycles; Land-use scenario; Observational data; Rainfall and runoffs; Sustainable lands; Water availability; Land use; deforestation; evapotranspiration; hydrological cycle; hydrological regime; land use change; rainfall; runoff; teleconnection; water availability; water management; Amazonia; Bolivia; Peru; Ucayali River
来源期刊	Hydrology and Earth System Sciences
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/160115
作者单位	Weng, W., Potsdam Institute for Climate Impact Research, Potsdam, 14482, Germany, Geography Department, Humboldt-Universität zu, Berlin, 10099, Germany, Integrative Research Institute on Transformations of Human-Environment Systems, Humboldt-Universität zu, Berlin, 10099, Germany; Luedeke, M., Potsdam Institute for Climate Impact Research, Potsdam, 14482, Germany; Zemp, D., Potsdam Institute for Climate Impact Research, Potsdam, 14482, Germany, Biodiversity, Macroecology and Biogeography, University of Goettingen, Göttingen, 37077, Germany; Lakes, T., Geography Department, Humboldt-Universität zu, Berlin, 10099, Germany, Integrative Research Institute on Transformations of Human-Environment Systems, Humboldt-Universität zu, Berlin, 10099, Germany; Kropp, J., Potsdam Institute for Climate Impact Research, Potsdam, 14482, Germany, Institute of Earth and Environmental Science, University of Potsdam, Potsdam, 14469, Germany
推荐引用方式 GB/T 7714	Weng W.,Luedeke M.,Zemp D.,et al. Aerial and surface rivers: Downwind impacts on water availability from land use changes in Amazonia[J],2018,22(1).
APA	Weng W.,Luedeke M.,Zemp D.,Lakes T.,&Kropp J..(2018).Aerial and surface rivers: Downwind impacts on water availability from land use changes in Amazonia.Hydrology and Earth System Sciences,22(1).
MLA	Weng W.,et al."Aerial and surface rivers: Downwind impacts on water availability from land use changes in Amazonia".Hydrology and Earth System Sciences 22.1(2018).