DOI: 10.1016/j.foreco.2013.01.013
Scopus记录号: 2-s2.0-84874357723
论文题名: Complex restoration challenges: Weeds, Seeds, And roads in a forested Wildland Urban Interface
作者: Buonopane M. ; Snider G. ; Kerns B.K. ; Doescher P.S.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2013
卷: 295 起始页码: 87
结束页码: 96
语种: 英语
英文关键词: Herbicide
; Mixed-conifer forests
; Seed bank
; Understory vegetation
; Wildland Urban Interface (WUI)
Scopus关键词: Dry-mixed conifers
; Exotic species
; Exotic weeds
; Federal policies
; Federal regulations
; Germinants
; Herbicide treatment
; Human disturbances
; Litter layer
; Mineral soils
; Mixed-conifer forests
; Noxious weeds
; Road environment
; Seed bank
; Short term
; Species composition
; Understory vegetation
; Vegetative cover
; Washington State
; Weed management
; Weed seed
; Wildland urban interface
; Herbicides
; Restoration
; Roads and streets
; Vegetation
; Weed control
; Forestry
; abundance
; federal system
; herbicide
; human activity
; invasive species
; litter
; restoration ecology
; road
; seed bank
; stand structure
; understory
; vegetation cover
; vegetation structure
; weed control
; Forestry
; Herbicides
; Plants
; Restoration
; Softwoods
; Weed Control
; United States
; Washington [United States]
英文摘要: Federal policies in the US strongly emphasize reducing hazardous fuels at the Wildland Urban Interface (WUI). However, these areas present restoration challenges as they often have exotic weeds, frequent human disturbance, and the presence of roads. Understanding seed banks is important in planning for desirable post-disturbance community conditions, developing integrated weed management programs, and complying with State and Federal regulations. We characterized the aboveground vegetation and seed bank in a WUI composed of mixed age dry-mixed conifer forest stands in central Washington State, and examined patterns and relationships between aboveground vegetation and seed bank germinant abundance in relation to distance to road, seed bank layer, and herbicide treatments. Noxious weed frequency, as well as exotic weed and annual native forb cover, significantly decreased with distance from road, while native graminoid cover increased, declining beyond 20. m. Herbicides did not affect composition of the aboveground community in the short term. Six hundred and thirty seeds germinated from litter and mineral soil samples over a 5 month trial, and 43 species were identified. Most germinants (77%) and species (36 species) emerged from the litter layer compared to mineral soil, and the majority were annual forbs, followed by perennial forbs, native graminoids and exotic species. Little similarity was found between the extant vegetation and seed bank floras. Fourteen percent of germinants were exotic species, and were found in similar abundances regardless of proximity to road or herbicide treatment. Findings from our study suggest that (1) roads strongly influenced aboveground vegetative cover and species composition; (2) seed bank contributions to desirable post-disturbance understory development may be relatively low, especially if activities remove the litter layer; (3) weed populations were largely confined to near road environments, but the weed seed bank, which is a substantial part of the total seed bank, was not; and (4) herbicide treatments were ineffective and did not impact seed banks in the short term. © 2013 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/66678
Appears in Collections: 影响、适应和脆弱性
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作者单位: USDA Forest Service, Pacific Northwest Research Station, Corvallis Forestry Sciences Laboratory, 3200 SW Jefferson Way, Corvallis, OR 97331, United States; Department of Forest Ecosystems and Society, Oregon State University, 321 Richardson Hall, Corvallis, OR 97331, United States; Department of Forest Ecosystems and Society, Oregon State University, Corvallis Forestry Sciences Laboratory, 3200 SW Jefferson Way, Corvallis, OR 97331, United States; USDA Forest Service, Wenatchee River Ranger District, 600 Sherbourne, Leavenworth, WA 98826, United States
Recommended Citation:
Buonopane M.,Snider G.,Kerns B.K.,et al. Complex restoration challenges: Weeds, Seeds, And roads in a forested Wildland Urban Interface[J]. Forest Ecology and Management,2013-01-01,295