DOI: 10.5194/hess-21-5603-2017
Scopus记录号: 2-s2.0-85034101408
论文题名: Hydrological impacts of global land cover change and human water use
作者: Bosmans J ; H ; C ; , Van Beek L ; P ; H ; , Sutanudjaja E ; H ; , Bierkens M ; F ; P
刊名: Hydrology and Earth System Sciences
ISSN: 10275606
出版年: 2017
卷: 21, 期: 11 起始页码: 5603
结束页码: 5626
语种: 英语
Scopus关键词: Abstracting
; Climate change
; Evapotranspiration
; Irrigation
; Water resources
; Water supply
; Water supply systems
; Anthropogenic impacts
; Different climatic zones
; Hydrological cycles
; Hydrological impacts
; Reservoir buildings
; Spatial variability
; Water distributions
; Water resources modeling
; Reservoirs (water)
; anthropogenic effect
; discharge
; evapotranspiration
; hydrological cycle
; hydrological modeling
; irrigation system
; land cover
; reservoir
; spatial variation
; water resource
; water use
英文摘要: Human impacts on global terrestrial hydrology have been accelerating during the 20th century. These human impacts include the effects of reservoir building and human water use, as well as land cover change. To date, many global studies have focussed on human water use, but only a few focus on or include the impact of land cover change. Here we use PCR-GLOBWB, a combined global hydrological and water resources model, to assess the impacts of land cover change as well as human water use globally in different climatic zones. Our results show that land cover change has a strong effect on the global hydrological cycle, on the same order of magnitude as the effect of human water use (applying irrigation, abstracting water, for industrial use for example, including reservoirs, etc.). When globally averaged, changing the land cover from that of 1850 to that of 2000 increases discharge through reduced evapotranspiration. The effect of land cover change shows large spatial variability in magnitude and sign of change depending on, for example, the specific land cover change and climate zone. Overall, land cover effects on evapotranspiration are largest for the transition of tall natural vegetation to crops in energy-limited equatorial and warm temperate regions. In contrast, the inclusion of irrigation, water abstraction and reservoirs reduces global discharge through enhanced evaporation over irrigated areas and reservoirs as well as through water consumption. Hence, in some areas land cover change and water distribution both reduce discharge, while in other areas the effects may partly cancel out. The relative importance of both types of impacts varies spatially across climatic zones. From this study we conclude that land cover change needs to be considered when studying anthropogenic impacts on water resources. © Author(s) 2017. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/79004
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Physical Geography, Faculty of Geoscience, Utrecht University, Utrecht, Netherlands; Unit Soil and Groundwater Systems, Deltares, Utrecht, Netherlands
Recommended Citation:
Bosmans J,H,C,et al. Hydrological impacts of global land cover change and human water use[J]. Hydrology and Earth System Sciences,2017-01-01,21(11)