Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1002/eco.22 |
Seasonal and interannual variation of streamflow pathways and biogeochemical implications in semi-arid, forested catchments in Valles Caldera, New Mexico | |
Liu, Fengjing1; Parmenter, Robert2; Brooks, Paul D.3; Conklin, Martha H.1; Bales, Roger C.1 | |
通讯作者 | Liu, Fengjing |
来源期刊 | ECOHYDROLOGY
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ISSN | 1936-0584 |
出版年 | 2008 |
卷号 | 1期号:3页码:239-252 |
英文摘要 | Pathways of streamflow were investigated using geochemical tracers in ungauged headwater and higher-order streams in the semi-arid, forested, Valles Caldera, New Mexico. Combining diagnostic tools of mixing models and endmember mixing analysis (EMMA) shows that streamflow at East Fork Jemez River and San Antonio West (both > 120 km(2)) was controlled by mixing of three endmembers: near-surface runoff, subsurface flow and groundwater. The contribution of near-surface runoff was primarily controlled by soil moisture and evapotranspiration, and was much higher in wet years (2005 and 2007) than a dry year (2006) and during the spring snowmelt than in the summer monsoon. Streamflow at the San Antonio Toledo headwater catchment (55 km(2)) was dominated by subsurface flow alone, consistent with the distribution of coarse-textured, well-drained soils at higher elevations. During the snowmelt period and at catchments with higher near-surface runoff contributions, nutrient concentrations in streams were found to be higher, as a result of nutrient leaching from the upper organic-rich soil horizons by near-surface runoff. These results highlight the importance of seasonal and interannual variability of hydrology in semi-arid regions, and the role of flowpaths in controlling sources of nutrients in streams. Copyright (C) 2008 John Wiley & Sons, Ltd. |
英文关键词 | near-surface runoff subsurface flow groundwater biogeochemistry endmember mixing analysis Valles Caldera |
类型 | Article |
语种 | 英语 |
国家 | USA |
收录类别 | SCI-E |
WOS记录号 | WOS:000260447900006 |
WOS关键词 | PONDEROSA PINE HILLSLOPE ; HYDROGRAPH SEPARATIONS ; CLIMATE VARIATION ; MIXING MODELS ; NITROGEN ; FLOW ; UNCERTAINTY ; ECOSYSTEMS ; NUTRIENT ; TRACERS |
WOS类目 | Ecology ; Environmental Sciences ; Water Resources |
WOS研究方向 | Environmental Sciences & Ecology ; 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/2XILL650/157030 |
作者单位 | 1.Univ Calif, Sch Engn, Merced, CA 95344 USA; 2.Valles Caldera Natl Preserve, Jemez Springs, NM USA; 3.Univ Arizona, Dept Hydrol & Water Resources, Tucson, AZ 85721 USA |
推荐引用方式 GB/T 7714 | Liu, Fengjing,Parmenter, Robert,Brooks, Paul D.,et al. Seasonal and interannual variation of streamflow pathways and biogeochemical implications in semi-arid, forested catchments in Valles Caldera, New Mexico[J]. University of Arizona,2008,1(3):239-252. |
APA | Liu, Fengjing,Parmenter, Robert,Brooks, Paul D.,Conklin, Martha H.,&Bales, Roger C..(2008).Seasonal and interannual variation of streamflow pathways and biogeochemical implications in semi-arid, forested catchments in Valles Caldera, New Mexico.ECOHYDROLOGY,1(3),239-252. |
MLA | Liu, Fengjing,et al."Seasonal and interannual variation of streamflow pathways and biogeochemical implications in semi-arid, forested catchments in Valles Caldera, New Mexico".ECOHYDROLOGY 1.3(2008):239-252. |
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