Arid
DOI10.1002/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
ISSN1936-0584
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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