Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2017WR022042 |
Geomorphic Controls on Floodplain Soil Organic Carbon in the Yukon Flats, Interior Alaska, From Reach to River Basin Scales | |
Lininger, K. B.1; Wohl, E.1; Rose, J. R.2 | |
2018-03-01 | |
发表期刊 | WATER RESOURCES RESEARCH
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ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2018 |
卷号 | 54期号:3页码:1934-1951 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Floodplains accumulate and store organic carbon (OC) and release OC to rivers, but studies of floodplain soil OC come from small rivers or small spatial extents on larger rivers in temperate latitudes. Warming climate is causing substantial change in geomorphic process and OC fluxes in high latitude rivers. We investigate geomorphic controls on floodplain soil OC concentrations in active-layer mineral sediment in the Yukon Flats, interior Alaska. We characterize OC along the Yukon River and four tributaries in relation to geomorphic controls at the river basin, segment, and reach scales. Average OC concentration within floodplain soil is 2.8% (median = 2.2%). Statistical analyses indicate that OC varies among river basins, among planform types along a river depending on the geomorphic unit, and among geomorphic units. OC decreases with sample depth, suggesting that most OC accumulates via autochthonous inputs from floodplain vegetation. Floodplain and river characteristics, such as grain size, soil moisture, planform, migration rate, and riverine DOC concentrations, likely influence differences among rivers. Grain size, soil moisture, and age of surface likely influence differences among geomorphic units. Mean OC concentrations vary more among geomorphic units (wetlands = 5.1% versus bars = 2.0%) than among study rivers (Dall River = 3.8% versus Teedrinjik River = 2.3%), suggesting that reach-scale geomorphic processes more strongly control the spatial distribution of OC than basin-scale processes. Investigating differences at the basin and reach scale is necessary to accurately assess the amount and distribution of floodplain soil OC, as well as the geomorphic controls on OC. |
英文关键词 | organic carbon Yukon River Alaska geomorphic units floodplain fluvial geomorphology |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000430364900030 |
WOS关键词 | PERMAFROST CARBON ; CLIMATE-CHANGE ; INLAND WATERS ; DISTURBANCE ; MATTER ; DEGRADATION ; UNCERTAINTY ; MANAGEMENT ; FEEDBACKS ; ECOSYSTEM |
WOS类目 | Environmental Sciences ; Limnology ; Water Resources |
WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/21614 |
专题 | 资源环境科学 |
作者单位 | 1.Colorado State Univ, Dept Geosci, Ft Collins, CO 80523 USA; 2.US Fish & Wildlife Serv, Reg I&M 7, Fairbanks, AK USA |
推荐引用方式 GB/T 7714 | Lininger, K. B.,Wohl, E.,Rose, J. R.. Geomorphic Controls on Floodplain Soil Organic Carbon in the Yukon Flats, Interior Alaska, From Reach to River Basin Scales[J]. WATER RESOURCES RESEARCH,2018,54(3):1934-1951. |
APA | Lininger, K. B.,Wohl, E.,&Rose, J. R..(2018).Geomorphic Controls on Floodplain Soil Organic Carbon in the Yukon Flats, Interior Alaska, From Reach to River Basin Scales.WATER RESOURCES RESEARCH,54(3),1934-1951. |
MLA | Lininger, K. B.,et al."Geomorphic Controls on Floodplain Soil Organic Carbon in the Yukon Flats, Interior Alaska, From Reach to River Basin Scales".WATER RESOURCES RESEARCH 54.3(2018):1934-1951. |
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