Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018WR023442 |
Effects of Forest Roads on Runoff Initiation in Low-Order Ephemeral Streams | |
Ramos-Scharron, C. E.1,2; LaFevor, M. C.3 | |
2018-11-01 | |
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:11页码:8613-8631 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Understanding hydrologic connectivity is essential for managing ephemeral head water streams where upstream land use influences downstream aquatic habitats. This study relies on a field-based approach to evaluate how precipitation and roads affect runoff generation in low-order ephemeral streams of the U.S. Virgin Islands. Logistic regression analyses show that runoff delivery from unroaded catchments agrees with a water storage conceptual model typical for subsurface storm and saturation overland flow-dominated settings. Without roads, runoff occurs only about 4 times per year in response to 10 and 78 mm of storm rainfall, depending on antecedent precipitation. In contrast, maximum 15-min rainfall intensities are a better predictor of runoff generation on unpaved roads than are total rainfall and antecedent conditions. Intensities surpassing similar to 10 mm/hr lead to road runoff, and this occurs about 40 times per year. Road-influenced streams represent an intermediate setting for which runoff generation depends on storm and antecedent rainfall, as well as the road surface area captured by drains and flow path distance. In our focus area, roads can provoke streams to deliver runoff to coral bearing waters 10 to 13 times every year as a response to 9.3- to 50-mm storms, depending on antecedent rainfall and road drain characteristics. These results highlight the sensitivity of road connectivity to specific road drain characteristics and display the potential for connectivity as a guiding watershed restoration principle. |
英文关键词 | threshold connectivity forest road runoff dry tropics coral reef |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000453369400005 |
WOS关键词 | PEAK FLOW RESPONSES ; ST-JOHN ; SEDIMENT PRODUCTION ; WESTERN CASCADES ; CORAL-REEFS ; OVERLAND-FLOW ; LOGGING ROADS ; LARGE BASINS ; HYDROLOGICAL PROCESSES ; UNPAVED ROADS |
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/21599 |
专题 | 资源环境科学 |
作者单位 | 1.Univ Texas Austin, Dept Geog & Environm, Austin, TX 78712 USA; 2.Univ Texas Austin, LLILAS Benson, Austin, TX 78712 USA; 3.Univ Alabama, Dept Geog, Tuscaloosa, AL USA |
推荐引用方式 GB/T 7714 | Ramos-Scharron, C. E.,LaFevor, M. C.. Effects of Forest Roads on Runoff Initiation in Low-Order Ephemeral Streams[J]. WATER RESOURCES RESEARCH,2018,54(11):8613-8631. |
APA | Ramos-Scharron, C. E.,&LaFevor, M. C..(2018).Effects of Forest Roads on Runoff Initiation in Low-Order Ephemeral Streams.WATER RESOURCES RESEARCH,54(11),8613-8631. |
MLA | Ramos-Scharron, C. E.,et al."Effects of Forest Roads on Runoff Initiation in Low-Order Ephemeral Streams".WATER RESOURCES RESEARCH 54.11(2018):8613-8631. |
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