DOI: 10.1016/j.foreco.2013.09.031
Scopus记录号: 2-s2.0-84888137837
论文题名: Sediment delivery from bare and graveled forest road stream crossing approaches in the Virginia Piedmont
作者: Brown K.R. ; Michael Aust W. ; McGuire K.J.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2013
卷: 310 起始页码: 836
结束页码: 846
语种: 英语
英文关键词: BMPs
; Forest road approaches
; Gravel
; Non-point source pollution
; Sediment delivery
; Water quality
Scopus关键词: Best management practice (BMPs)
; BMPs
; Forest roads
; Non-point source pollution
; Repeated measurements
; Sediment delivery
; Stream crossings
; Water control structures
; Crossings (pipe and cable)
; Forestry
; Gravel
; Roads and streets
; Water pollution
; Water quality
; Sediments
; best management practice
; gravel
; measurement method
; nonpoint source pollution
; sediment analysis
; sediment pollution
; sediment trap
; stream
; water quality
; Forestry
; Sediments
; Water Pollution
; Water Quality
; United States
; Virginia
英文摘要: Forest road stream crossing approaches, or the section of road immediately adjacent to the stream crossing, represent primary sources and nearly direct pathways for sediment delivery to stream channels. This research quantified sediment delivery rates associated with reopening abandoned legacy road stream crossing approaches and evaluated the effectiveness of gravel surfacing of the entire running surface in reducing sediment delivery at stream crossings in the Virginia Piedmont. Sediment delivery rates from five regraded (bare) legacy road approaches were compared to those from four completely graveled road approaches. Repeated measurements of road derived sediment trapped by silt fences were used to quantify sediment delivery rates from the road approaches for one year (Aug. 5, 2011-Aug. 5, 2012). Annual sediment delivery rates from the bare approaches were 7.5 times higher than those of the gravel approaches. Sediment delivery rates ranged from 34 to 287Mgha-1year-1 for the bare approaches and from 10 to 16Mgha-1year-1 for the graveled approaches. The highest sediment delivery rates were associated inadequate road surface cover and insufficient water control structures. These findings show that reopened legacy roads and associated stream crossing approaches can deliver significant quantities of sediment if roads are not adequately closed or maintained and that corrective best management practices (BMPs), such as gravel and appropriate spacing of water control structures, can reduce sediment delivery to streams. © 2013 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/66245
Appears in Collections: 影响、适应和脆弱性
There are no files associated with this item.
作者单位: Department of Forest Resources and Environmental Conservation (FREC), Virginia Tech, 210 Cheatham Hall, 310 West Campus Drive, Blacksburg, VA 24061, United States; FREC, Virginia Tech, 228D Cheatham Hall, 310 West Campus Drive, Blacksburg, VA 24061, United States; FREC and Virginia Water Resources Research Center, Virginia Tech, 210 Cheatham Hall, 310 West Campus Drive, Blacksburg, VA 24061, United States
Recommended Citation:
Brown K.R.,Michael Aust W.,McGuire K.J.. Sediment delivery from bare and graveled forest road stream crossing approaches in the Virginia Piedmont[J]. Forest Ecology and Management,2013-01-01,310