干旱区生态环境知识资源中心(Arid): Simulating lake and wetland areal coverage under future groundwater recharge projections: The Nebraska Sand Hills system

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DOI	10.1016/j.jhydrol.2019.06.046
	Simulating lake and wetland areal coverage under future groundwater recharge projections: The Nebraska Sand Hills system
	Rossman, Nathan R.; Zlotnik, Vitaly A.; Rowe, Clinton M.
通讯作者	Rossman, Nathan R.
来源期刊	JOURNAL OF HYDROLOGY
ISSN	0022-1694
EISSN	1879-2707
出版年	2019
卷号	576 页码:185-196
英文摘要	In a semi-arid climate, groundwater-fed endorheic lakes often have shallow depths and large areas of associated wetlands. These lake-wetland-aquifer systems are sensitive to land use and climate changes. Difficulties of modeling such systems include (a) tracking several thousand lakes and wetlands (LWs), and (b) evaluating major drivers of trends and fluctuations in LW areal coverage. Integrated hydrologic modeling of such systems is prohibitively expensive. We combine traditional groundwater flow modeling (MODFLOW), driven by modern and projected groundwater recharge (GR) estimates, with digital elevation model (DEM)-based geographic information system (GIS) terrain analyses. This approach can be a useful diagnostic tool for estimates of decade-averaged LW areas and numbers, and stream baseflow, facilitating conceptualization and design of more detailed modeling studies. We apply the approach to simulate dynamics of thousands of groundwater-fed LWs in the Nebraska Sand Hills, USA, under GCM-projected GR changes. Compared to the baseline period of 2000-2009, the model indicates an increase by 35% (from 2083 to 2804 km(2)) of decade-averaged LW area by the end of the 21st century under the Median GR projection, with GR averaging 55.3 mm/yr from 2010 through 2099 (5% increase). Under the same GR projection, the overall numbers of LW is simulated to increase by 18% (from 7331 to 8666). The uncertainty range in the hydrologic response of the system caused by differences among GR projections (Wet and Dry) are also evaluated.
英文关键词	Lake-aquifer interactions Groundwater recharge (GR) Groundwater modeling Climate change Aquifer response times Nebraska Sand Hills (NSH)
类型	Article
语种	英语
国家	USA
收录类别	SCI-E
WOS记录号	WOS:000486092200015
WOS关键词	CLIMATE-CHANGE IMPACTS ; DOMINATED LAKES ; SURFACE ; MODEL ; FLOW ; AQUIFER ; WATER ; HYDROLOGY ; SANDHILLS ; REGION
WOS类目	Engineering, Civil ; Geosciences, Multidisciplinary ; Water Resources
WOS研究方向	Engineering ; Geology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/217172
作者单位	Univ Nebraska, Dept Earth & Atmospher Sci, Lincoln, NE 68588 USA
推荐引用方式 GB/T 7714	Rossman, Nathan R.,Zlotnik, Vitaly A.,Rowe, Clinton M.. Simulating lake and wetland areal coverage under future groundwater recharge projections: The Nebraska Sand Hills system[J],2019,576:185-196.
APA	Rossman, Nathan R.,Zlotnik, Vitaly A.,&Rowe, Clinton M..(2019).Simulating lake and wetland areal coverage under future groundwater recharge projections: The Nebraska Sand Hills system.JOURNAL OF HYDROLOGY,576,185-196.
MLA	Rossman, Nathan R.,et al."Simulating lake and wetland areal coverage under future groundwater recharge projections: The Nebraska Sand Hills system".JOURNAL OF HYDROLOGY 576(2019):185-196.