Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1088/1748-9326/aa9eb6 |
Groundwater recharge in desert playas: current rates and future effects of climate change | |
McKenna, Owen P.1,2; Sala, Osvaldo E.1,2,3 | |
2018 | |
发表期刊 | ENVIRONMENTAL RESEARCH LETTERS |
ISSN | 1748-9326 |
出版年 | 2018 |
卷号 | 13期号:1 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Our results from playas, which are topographic low areas situated in closed-catchments in drylands, indicated that projected climate change in Southwestern USA would have a net positive impact over runon and groundwater recharge beneath playas. Expected increased precipitation variability can cause up to a 300% increase in annual groundwater recharge beneath playas. This increase will overshadow the effect of decreased precipitation amount that could cause up to a 50% decrease in recharge beneath playas. These changes could have a significant impact on groundwater and carbon storage. These results are important given that groundwater resources in Southwestern USA continue to decline due to human consumption outpacing natural recharge of aquifers. Here, we report on groundwater recharge rates ranging from less than 1 mm to greater than 25 mm per year beneath desert playas. Playas located in larger and steeper catchments with finer-textured soils had the highest rates of recharge. Vegetation cover had no effect on recharge beneath playas. We modeled catchment runoff generation and found that the amount of runon a playa receives annually strongly correlated to the rate of groundwater recharge beneath that playa. Runon occurred during precipitation events larger than 20 mm and increased linearly with events above that threshold. |
英文关键词 | desert playas watershed ecology groundwater recharge runoffmodeling climate change precipitation variability Jornada LTER |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000422972500001 |
WOS关键词 | SOIL ORGANIC-CARBON ; INFILTRATION PARAMETERS ; EROSION MODEL ; PRECIPITATION ; WATER ; SUSTAINABILITY ; RAINFALL ; LISEM ; IRRIGATION ; MOISTURE |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/32081 |
专题 | 气候变化 |
作者单位 | 1.Arizona State Univ, Global Drylands Ctr, Tempe, AZ 85287 USA; 2.Arizona State Univ, Sch Life Sci, Tempe, AZ 85287 USA; 3.Arizona State Univ, Sch Sustainabil, Tempe, AZ 85287 USA |
推荐引用方式 GB/T 7714 | McKenna, Owen P.,Sala, Osvaldo E.. Groundwater recharge in desert playas: current rates and future effects of climate change[J]. ENVIRONMENTAL RESEARCH LETTERS,2018,13(1). |
APA | McKenna, Owen P.,&Sala, Osvaldo E..(2018).Groundwater recharge in desert playas: current rates and future effects of climate change.ENVIRONMENTAL RESEARCH LETTERS,13(1). |
MLA | McKenna, Owen P.,et al."Groundwater recharge in desert playas: current rates and future effects of climate change".ENVIRONMENTAL RESEARCH LETTERS 13.1(2018). |
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