Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2017GL074046 |
What are the contemporary sources of sediment in the Mississippi River? | |
Hassan, M. A.1; Roberge, L.1; Church, M.1; More, M.1; Donner, S. D.1; Leach, J.2; Ali, K. F.3 | |
2017-09-16 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2017 |
卷号 | 44期号:17 |
文章类型 | Article |
语种 | 英语 |
国家 | Canada |
英文摘要 | Within the last two centuries, the Mississippi River basin has been transformed by changes in land use practices, dam construction, and training of the rivers for navigation. Here we analyze the contemporary patterns of fluvial sediment yield in the Mississippi River basin using all available data in order to assess the influence of regional land condition on the variation of sediment yield within the basin. We develop regional-scale relations between specific sediment yield (yield per unit area) and drainage area to reveal contemporary regional sediment yield patterns and source areas of riverine sediments. Extensive upland erosion before the development of soil conservation practices exported large amounts of sediment to the valleys and floodplains. We show that sediment today is sourced primarily along the river valleys from arable land, and from stream bank and channel erosion, with sediment yields from areas dominated by arable land 2 orders of magnitude greater than that of grassland dominated areas. Comparison with the "T factor," a commonly quoted measure of agricultural soil resilience suggests that the latter may not reflect contemporary soil loss from the landscape. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000411702400029 |
WOS关键词 | FLUVIAL SYSTEMS ; SOIL-EROSION ; BASIN ; WISCONSIN ; IMPACT ; COVER ; YIELD ; AREA |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
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/28212 |
专题 | 气候变化 |
作者单位 | 1.Univ British Columbia, Dept Geog, Vancouver, BC, Canada; 2.Simon Fraser Univ, Dept Geog, Burnaby, BC, Canada; 3.Univ Northern British Columbia, Geog Program, Prince George, BC, Canada |
推荐引用方式 GB/T 7714 | Hassan, M. A.,Roberge, L.,Church, M.,et al. What are the contemporary sources of sediment in the Mississippi River?[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(17). |
APA | Hassan, M. A..,Roberge, L..,Church, M..,More, M..,Donner, S. D..,...&Ali, K. F..(2017).What are the contemporary sources of sediment in the Mississippi River?.GEOPHYSICAL RESEARCH LETTERS,44(17). |
MLA | Hassan, M. A.,et al."What are the contemporary sources of sediment in the Mississippi River?".GEOPHYSICAL RESEARCH LETTERS 44.17(2017). |
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