Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.jhydrol.2011.09.003 |
Effect of grassland vegetation type on the responses of hydrological processes to seasonal precipitation patterns | |
Salve, Rohit1; Sudderth, Erika A.2; St Clair, Samuel B.3; Torn, Margaret S.1 | |
通讯作者 | Salve, Rohit |
来源期刊 | JOURNAL OF HYDROLOGY |
ISSN | 0022-1694 |
EISSN | 1879-2707 |
出版年 | 2011 |
卷号 | 410期号:1-2页码:51-61 |
英文摘要 | Under future climate scenarios, rainfall patterns and species composition in California grasslands are predicted to change, potentially impacting soil-moisture dynamics and ecosystem function. The primary objective of this study was to assess the impact of altered rainfall on soil-moisture dynamics in three annual grassland vegetation types. We monitored seasonal changes in soil moisture under three different rainfall regimes in mesocosms planted with: (1) a mixed forb-grass community, (2) an Avena barbata monoculture, and (3) an Erodium botrys monoculture. We applied watering treatments in pulses, followed by dry periods that are representative of natural rainfall patterns in California annual grasslands. While rainfall was the dominant treatment, its impact on hydrological processes varied over the growing season. Surprisingly, there were only small differences in the hydrologic response among the three vegetation types. We found significant temporal variability in evapotranspiration, seepage, and soil-moisture content. Both Water Use Efficiency (WUE) and Rain Use Efficiency (RUE) decreased as annual precipitation totals increased. Results from this investigation suggest that both precipitation and vegetation have a significant interactive effect on soil-moisture dynamics. When combined, seasonal precipitation and grassland vegetation influence near-surface hydrology in ways that cannot be predicted from manipulation of a single variable. (C) 2011 Elsevier B.V. All rights reserved. |
英文关键词 | Soil moisture Precipitation Grasslands Water budget |
类型 | Article |
语种 | 英语 |
国家 | USA |
收录类别 | SCI-E |
WOS记录号 | WOS:000297968000005 |
WOS关键词 | RAIN USE EFFICIENCY ; WATER ; CLIMATE ; NITROGEN ; ACCLIMATION ; DYNAMICS ; GRASSES ; DESERT ; PULSES ; BIOMES |
WOS类目 | Engineering, Civil ; Geosciences, Multidisciplinary ; Water Resources |
WOS研究方向 | Engineering ; Geology ; Water Resources |
来源机构 | University of California, Berkeley |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/169293 |
作者单位 | 1.Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA; 2.Brown Univ, Ctr Environm Studies, Providence, RI 02912 USA; 3.Brigham Young Univ, Dept Plant & Wildlife Sci, Provo, UT 84602 USA |
推荐引用方式 GB/T 7714 | Salve, Rohit,Sudderth, Erika A.,St Clair, Samuel B.,et al. Effect of grassland vegetation type on the responses of hydrological processes to seasonal precipitation patterns[J]. University of California, Berkeley,2011,410(1-2):51-61. |
APA | Salve, Rohit,Sudderth, Erika A.,St Clair, Samuel B.,&Torn, Margaret S..(2011).Effect of grassland vegetation type on the responses of hydrological processes to seasonal precipitation patterns.JOURNAL OF HYDROLOGY,410(1-2),51-61. |
MLA | Salve, Rohit,et al."Effect of grassland vegetation type on the responses of hydrological processes to seasonal precipitation patterns".JOURNAL OF HYDROLOGY 410.1-2(2011):51-61. |
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