Arid
DOI10.2111/REM-D-11-00055.1
Does Shrub Removal Increase Groundwater Recharge in Southwestern Texas Semiarid Rangelands?
Moore, Georgianne W.1; Barre, David A.2; Owens, M. Keith3
通讯作者Moore, Georgianne W.
来源期刊RANGELAND ECOLOGY & MANAGEMENT
ISSN1550-7424
出版年2012
卷号65期号:1页码:1-10
英文摘要

Evapotranspiration (ET) is a key component limiting groundwater recharge past the root zone in semiarid regions. Vegetation management may alter groundwater recharge if ET is altered due to changes in vegetation type or cover. This study quantifies changes in groundwater recharge following vegetation cover change from native woodland to pasture M a semiarid region of southwest Texas. The Carrizo-Wilcox aquifer is a valuable groundwater resource in this area, where overuse by dependent farming practices has lowered aquifer levels significantly in the last 85 yr. Combining data from short-term (30 mo) monitoring of the changes in soil moisture and long-term (5-30 yr) changes in total soil chloride indicated deep drainage increased slightly where land had been cleared of vegetation. Annual recharge rates below rooting depths (standardized to 155 cm) averaged only 0.72 +/- 0.2 mm . yr(-1) (mean +/- SE) in areas not cleared of woody vegetation, as estimated by chloride mass balance. Upon clearing, 72% of the total chloride naturally occurring in the soil profile was flushed away within 30 yr, leading to an estimated 2.59 +/- 1.7 mm . yr(-1) additional recharge. Deep soil moisture in recently cleared land increased by up to 17% during the growing season of wet years (double the average rainfall) but did not increase in dry or normal precipitation years, providing supporting evidence that more water penetrated below the roots under certain environmental conditions. These results demonstrate that brush management can increase recharge by modest, but measurable, amounts depending on site-specific soil characteristics and degree of reduction in vegetation.


英文关键词brush management Carrizo-Wilcox aquifer chloride mass balance deep drainage natural tracer soil water balance
类型Article
语种英语
国家USA
收录类别SCI-E
WOS记录号WOS:000299604800001
WOS关键词WESTERN MURRAY BASIN ; DESERT SOILS ; ENVIRONMENTAL TRACERS ; ROOT DISTRIBUTIONS ; AMERICAN SOUTHWEST ; HONEY MESQUITE ; DEEP DRAINAGE ; LAND-USE ; WATER ; AUSTRALIA
WOS类目Ecology ; Environmental Sciences
WOS研究方向Environmental Sciences & Ecology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/174743
作者单位1.Texas A&M Univ, Dept Ecosyst Sci & Management, College Stn, TX 77843 USA;
2.Texas AgriLife Extens Ctr, San Angelo, TX 76901 USA;
3.Oklahoma State Univ, Dept Nat Resource Ecol & Management, Stillwater, OK 74078 USA
推荐引用方式
GB/T 7714
Moore, Georgianne W.,Barre, David A.,Owens, M. Keith. Does Shrub Removal Increase Groundwater Recharge in Southwestern Texas Semiarid Rangelands?[J],2012,65(1):1-10.
APA Moore, Georgianne W.,Barre, David A.,&Owens, M. Keith.(2012).Does Shrub Removal Increase Groundwater Recharge in Southwestern Texas Semiarid Rangelands?.RANGELAND ECOLOGY & MANAGEMENT,65(1),1-10.
MLA Moore, Georgianne W.,et al."Does Shrub Removal Increase Groundwater Recharge in Southwestern Texas Semiarid Rangelands?".RANGELAND ECOLOGY & MANAGEMENT 65.1(2012):1-10.
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