DOI: 10.5194/hess-21-2799-2017
Scopus记录号: 2-s2.0-85020636595
论文题名: Hydrological threats to riparian wetlands of international importance - A global quantitative and qualitative analysis
作者: Schneider C ; , Flörke M ; , De Stefano L ; , Petersen-Perlman J ; D
刊名: Hydrology and Earth System Sciences
ISSN: 10275606
出版年: 2017
卷: 21, 期: 6 起始页码: 2799
结束页码: 2815
语种: 英语
Scopus关键词: Ecology
; Ecosystems
; Floods
; Hydrology
; River pollution
; Water management
; Water resources
; Wetlands
; Ecological integrity
; Hydrological modeling
; Natural flow regime
; Qualitative analysis
; Quantitative and qualitative analysis
; Resource availability
; Transboundary basins
; Waterresource management
; Climate change
; climate change
; dam construction
; ecosystem service
; global perspective
; hydrological change
; hydrological modeling
; hydrological regime
; overbank flow
; qualitative analysis
; quantitative analysis
; riparian zone
; streamflow
; water management
; water resource
; wetland
; Arabian Sea
; Balkans
; Europe
; Indian Ocean
; Iran
; Mazandaran
; North Africa
; Persian Gulf
; Sakht Sar
; South America
; West Asia
英文摘要: Riparian wetlands have been disappearing at an accelerating rate. Their ecological integrity as well as their vital ecosystem services for humankind depend on regular patterns of inundation and drying provided by natural flow regimes. However, river hydrology has been altered worldwide. Dams cause less variable flow regimes and water abstractions decrease the amount of flow so that ecologically important flood pulses are often reduced. Given growing population pressure and projected climate change, immediate action is required. However, the implementation of counteractive measures is often a complex task. This study develops a screening tool for assessing hydrological threats to riparian wetlands on global scales. The approach is exemplified on 93 Ramsar sites, many of which are located in transboundary basins. First, the WaterGAP3 hydrological modeling framework is used to quantitatively compare current and future modified flow regimes to reference flow conditions. In our simulations current water resource management seriously impairs riparian wetland inundation at 29 % of the analyzed sites. A further 8 % experience significantly reduced flood pulses. In the future, eastern Europe, western Asia, as well as central South America could be hotspots of further flow modifications due to climate change. Second, a qualitative analysis of the 93 sites determined potential impact on overbank flows resulting from planned or proposed dam construction projects. They take place in one-third of the upstream areas and are likely to impair especially wetlands located in South America, Asia, and the Balkan Peninsula. Third, based on the existing legal/institutional framework and water resource availability upstream, further qualitative analysis evaluated the capacity to preserve overbank flows given future streamflow changes due to dam construction and climate change. Results indicate hotspots of vulnerability exist, especially in northern Africa and the Persian Gulf. © Author(s) 2017. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/79155
Appears in Collections: 气候变化事实与影响
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作者单位: Center for Environmental Systems Research, University of Kassel, Kassel, Germany; Department of Geodynamics, Complutense University of Madrid, Madrid, Spain; Department of Geography, Western Oregon University, Monmouth, OR, United States
Recommended Citation:
Schneider C,, Flörke M,, De Stefano L,et al. Hydrological threats to riparian wetlands of international importance - A global quantitative and qualitative analysis[J]. Hydrology and Earth System Sciences,2017-01-01,21(6)