globalchange  > 气候变化事实与影响
DOI: 10.5194/hess-19-4257-2015
Scopus记录号: 2-s2.0-84945924139
论文题名:
Reconstructing the natural hydrology of the San Francisco Bay-Delta watershed
作者: Fox P; , Hutton P; H; , Howes D; J; , Draper A; J; , Sears L
刊名: Hydrology and Earth System Sciences
ISSN: 10275606
出版年: 2015
卷: 19, 期:10
起始页码: 4257
结束页码: 4274
语种: 英语
Scopus关键词: Hydraulic structures ; Plants (botany) ; Vegetation ; Water resources ; Annual average ; Aquatic species ; Beneficial use ; Landscape changes ; Natural landscapes ; Re-engineered systems ; San Francisco Bay ; Water balance ; Reservoirs (water) ; climate conditions ; delta ; landscape change ; long-term change ; outflow ; reconstruction ; resource development ; water budget ; water resource ; water use ; watershed ; California ; Central Valley [California] ; San Francisco Bay ; United States
英文摘要: We evaluated the impact of landscape changes on the amount of delta outflow reaching San Francisco Bay. The natural landscape was reconstructed and water balances were used to estimate the long-term annual average delta outflow that would have occurred under natural landscape conditions if the climate from 1922 to 2009 were to repeat itself. These outflows are referred to as natural delta outflows and are the first published estimate of natural delta outflow. These natural delta outflows were then compared with current delta outflows for the same climate and existing landscape, including its re-engineered system of reservoirs, canals, aqueducts, and pumping plants. This analysis shows that the long-term, annual average delta outflow under current conditions is consistent with outflow under natural landscape conditions. The amount of water currently used by farms, cities, and others is about equal to the amount of water formerly used by native vegetation. Development of water resources in California's Central Valley transferred water formerly used by native vegetation to new beneficial uses without substantially reducing the long-term annual average supply to the San Francisco Bay-Delta estuary. Based on this finding, it is unlikely that observed declines in native freshwater aquatic species are the result of annual average delta outflow reductions. © Author(s) 2015.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/78401
Appears in Collections:气候变化事实与影响

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作者单位: Rockledge, FL, United States; Metropolitan Water District of Southern California, Sacramento, CA, United States; Irrigation Training and Research Center, BioResource and Agricultural Engineering Department, California Polytechnic State University, San Luis Obispo, CA, United States; MWH Americas Inc., 3321 Power Inn Road, Sacramento, CA, United States; Beaverton, OR, United States

Recommended Citation:
Fox P,, Hutton P,H,et al. Reconstructing the natural hydrology of the San Francisco Bay-Delta watershed[J]. Hydrology and Earth System Sciences,2015-01-01,19(10)
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