DOI: 10.1016/j.foreco.2013.05.020
Scopus记录号: 2-s2.0-84879308103
论文题名: Long-term effects of chaining treatments on vegetation structure in piñon-juniper woodlands of the Colorado Plateau
作者: Redmond M.D. ; Cobb N.S. ; Miller M.E. ; Barger N.N.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2013
卷: 305 起始页码: 120
结束页码: 128
语种: 英语
英文关键词: Agropyron cristatum
; Bromus tectorum
; Colorado Plateau
; Green chaining
; Juniperus osteosperma
; Pinus edulis
Scopus关键词: Agropyron cristatum
; Bromus tectorum
; Colorado Plateau
; Green chaining
; Juniperus osteosperma
; Pinus edulis
; Forestry
; Vegetation
; community composition
; coniferous forest
; fire behavior
; forest management
; grass
; ground cover
; herb
; land management
; livestock farming
; recruitment (population dynamics)
; seeding
; shrub
; soil cover
; soil erosion
; vegetation structure
; wildlife management
; woodland
; Forestry
; Juniperus Osteosperma
; Pinus Edulis
; Plants
; Colorado Plateau
; Grand Staircase-Escalante National Monument
; United States
; Utah
; Agropyron
; Agropyron cristatum
; Bromus tectorum
; Juniperus
; Juniperus osteosperma
; Pinus edulis
; Tillandsia lineatispica
英文摘要: Over the last half-century a range of methods have been utilized to reduce trees and shrubs in order to reduce wildfire risk and promote herbaceous vegetation to support livestock and wildlife. We examined the long-term (20-40. year) effects of past tree-reduction treatments on vegetation and ground cover in piñon-juniper woodlands, which is the third most extensive vegetation type in the continental United States. Tree-reduction treatments were conducted between 1963 and 1988 in Grand Staircase-Escalante National Monument, Utah by the US Bureau of Land Management and involved chaining followed by seeding to remove trees and often shrubs. Treatments were effective at increasing perennial grass cover and reducing tree cover over multiple decades. The increase in perennial grass cover was predominantly due to a nonnative species that was seeded, Agropyron cristatum (crested wheatgrass). Surface fuel loads were nearly twice as high in treated areas, likely changing fire behavior and increasing habitat complexity. Treated areas had higher bare mineral soil cover and lower biocrust cover, which may influence soil erosional processes. Interestingly, treated areas had significantly less Pinus edulis (piñon pine) recruitment compared to untreated areas, while there was no change in Juniperus osteosperma (Utah juniper) recruitment. These results indicate that treated areas may become more J. osteosperma dominated in the future due to increased establishment of J. osteosperma compared to P. edulis. Our results show that while treatments were effective at reducing tree cover and increasing herbaceous cover, there were long-term (40. year) treatment effects on vegetation composition and ground cover that need to be taken under consideration when developing future management strategies. © 2013 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/66445
Appears in Collections: 影响、适应和脆弱性
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作者单位: Ecology and Evolutionary Biology Department, University of Colorado, Boulder, CO 80309, United States; Merriam-Powell Center for Environmental Research, Northern Arizona University, P.O. Box 6077, Flagstaff, AZ 86011, United States; Southeast Utah Group, National Park Service, 2282 S. West Resource Blvd., Moab, UT 84532, United States
Recommended Citation:
Redmond M.D.,Cobb N.S.,Miller M.E.,et al. Long-term effects of chaining treatments on vegetation structure in piñon-juniper woodlands of the Colorado Plateau[J]. Forest Ecology and Management,2013-01-01,305