Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2017WR021728 |
Relative Influence of Landscape Variables and Discharge on Suspended Sediment Yields in Temperate Mountain Catchments | |
Bywater-Reyes, Sharon1,2; Bladon, Kevin D.1; Segura, Catalina1 | |
2018-07-01 | |
发表期刊 | WATER RESOURCES RESEARCH |
ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2018 |
卷号 | 54期号:7页码:5126-5142 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Suspended sediment is an important regulator of stream habitat quality but notoriously difficult to predict and regulate. This difficulty arises because of high natural variability in suspended sediment yield in space and time. Here we quantified associations between suspended sediment yields and discharge, watershed setting (i.e., physiography and lithology), and disturbance history for 10 temperate mountain watersheds (8.5-6,242 ha) in the U.S. Pacific Northwest (H.J. Andrews Long-Term Ecological Research, LTER) over an similar to 60-year period. Annual suspended sediment yields varied almost 4 orders of magnitude across space and time. A linear mixed effects model indicated that much of the variation in yields could be explained by the random effect of site (conditional R-2=0.74) with additional variation explained by the fixed effects (marginal R-2=0.67) of cumulative annual discharge (p<0.001) and the variability (standard deviation) of watershed slope (p<0.001). Two annual sediment yield data points were model outliers, that each occurred within a decade after forest management activities and a large-magnitude storm event at sites with high variability of catchment slope. Other sites had low sediment yields for a range of conditions, including management or flood disturbance. Taken together, our study shows that watersheds with high slope variability have higher suspended sediment yields and may be more vulnerable to increases in sediment yields following disturbances. |
英文关键词 | H J Andrews suspended sediment yield Oregon LTER long-term data forest management |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000442502100053 |
WOS关键词 | LONG-TERM PATTERNS ; WATER-QUALITY ; MANAGEMENT-PRACTICES ; FOREST PRACTICES ; FINE SEDIMENT ; OREGON ; LITHOLOGY ; DELIVERY ; RANGE ; HYDROLOGY |
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/21516 |
专题 | 资源环境科学 |
作者单位 | 1.Oregon State Univ, Dept Forest Engn Resources & Management, Corvallis, OR 97331 USA; 2.Univ Northern Colorado, Dept Earth & Atmospher Sci, Greeley, CO 80639 USA |
推荐引用方式 GB/T 7714 | Bywater-Reyes, Sharon,Bladon, Kevin D.,Segura, Catalina. Relative Influence of Landscape Variables and Discharge on Suspended Sediment Yields in Temperate Mountain Catchments[J]. WATER RESOURCES RESEARCH,2018,54(7):5126-5142. |
APA | Bywater-Reyes, Sharon,Bladon, Kevin D.,&Segura, Catalina.(2018).Relative Influence of Landscape Variables and Discharge on Suspended Sediment Yields in Temperate Mountain Catchments.WATER RESOURCES RESEARCH,54(7),5126-5142. |
MLA | Bywater-Reyes, Sharon,et al."Relative Influence of Landscape Variables and Discharge on Suspended Sediment Yields in Temperate Mountain Catchments".WATER RESOURCES RESEARCH 54.7(2018):5126-5142. |
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