Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1029/2009WR008842 |
Hydrologic response to precipitation pulses under and between shrubs in the Chihuahuan Desert, Arizona | |
Moran, M. S.1; Hamerlynck, E. P.1; Scott, R. L.1; Stone, J. J.1; Collins, C. D. Holifield1; Keefer, T. O.1; Bryant, R.1; DeYoung, L.2; Nearing, G. S.4; Sugg, Z.5; Hymer, D. C.3 | |
通讯作者 | Moran, M. S. |
来源期刊 | WATER RESOURCES RESEARCH
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ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2010 |
卷号 | 46 |
英文摘要 | Observations of the temporal and spatial distribution of poststorm soil moisture in open shrublands and savannas are limited, yet they are critical to understanding the interaction and feedback between moisture distribution and canopies. The objective of this analysis was to study the hydrologic impacts of precipitation pulses on the upper layer of soils under and between shrubs. The study was based on measurements of precipitation, runoff, and under-and between-shrub soil moisture over a period of 20 years (1990-2009) at a shrub-dominated site in the Walnut Gulch Experimental Watershed (WGEW) near Tombstone, Arizona. Within much of the root zone (to 30 cm depth), infiltration was not significantly different under versus between shrubs, and the under: between infiltration ratio was not related to pulse size or intensity. However, root-zone soil moisture was significantly higher between shrubs than under shrubs. The soil moisture measured at the surface (at 5 cm depth) was not consistently different under and between shrubs, but the soil moisture measured at depths of 15 and 30 cm were both significantly higher between shrubs than under shrubs. Considering mechanisms that explain the interaction between plants and soil moisture, we found no differences in infiltration, evaporative losses, and surface soil moisture in locations under and between shrubs. This led to the conclusion that lower root-zone soil moisture under shrubs was due largely to greater root density under shrubs than between shrubs. This study adds to the understanding of the impact of precipitation patterns on infiltration and soil moisture in shrub-dominated sites and the potential for vegetation change in arid and semiarid lands. |
类型 | Article |
语种 | 英语 |
国家 | USA |
收录类别 | SCI-E |
WOS记录号 | WOS:000285012200004 |
WOS关键词 | SOIL-MOISTURE SENSORS ; WATER-UPTAKE ; NEW-MEXICO ; TEMPORAL DYNAMICS ; SPATIAL-PATTERNS ; MOJAVE DESERT ; WOODY-PLANTS ; VEGETATION ; TEMPERATURE ; GRASSLAND |
WOS类目 | Environmental Sciences ; Limnology ; Water Resources |
WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources |
来源机构 | University of Arizona |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/166628 |
作者单位 | 1.ARS, USDA, SW Watershed Res Ctr, Tucson, AZ 85719 USA; 2.Univ Arizona, Sch Nat Resources, Tucson, AZ 85721 USA; 3.NASA, Goddard Space Flight Ctr, Greenbelt, MD 20770 USA; 4.Univ Arizona, Dept Hydrol & Water Resources, Tucson, AZ 85719 USA; 5.Univ Arizona, Dept Geog & Dev, Tucson, AZ 85721 USA |
推荐引用方式 GB/T 7714 | Moran, M. S.,Hamerlynck, E. P.,Scott, R. L.,et al. Hydrologic response to precipitation pulses under and between shrubs in the Chihuahuan Desert, Arizona[J]. University of Arizona,2010,46. |
APA | Moran, M. S..,Hamerlynck, E. P..,Scott, R. L..,Stone, J. J..,Collins, C. D. Holifield.,...&Hymer, D. C..(2010).Hydrologic response to precipitation pulses under and between shrubs in the Chihuahuan Desert, Arizona.WATER RESOURCES RESEARCH,46. |
MLA | Moran, M. S.,et al."Hydrologic response to precipitation pulses under and between shrubs in the Chihuahuan Desert, Arizona".WATER RESOURCES RESEARCH 46(2010). |
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