DOI: 10.1016/j.foreco.2014.05.029
Scopus记录号: 2-s2.0-84901948718
论文题名: Vegetation responses to fire and herbicide in intensively managed, mid-rotation pine
作者: Iglay R.B. ; Leopold B.D. ; Miller D.A.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2014
卷: 328 起始页码: 69
结束页码: 78
语种: 英语
英文关键词: Fire
; Herbicide
; Intensive forest management
; Mississippi
; Pinus spp.
; Vegetation management
Scopus关键词: Biodiversity
; Fires
; Hardwoods
; Herbicides
; Managers
; Regression analysis
; Vegetation
; Weed control
; Analysis of covariances
; Concomitant reduction
; Herbicide application
; Intensive forest management
; Mississippi
; Pinus spp
; Plant species diversity
; Vegetation management
; Forestry
; covariance analysis
; forest management
; herbicide
; plant community
; species diversity
; sustainable forestry
; vegetation structure
; Biodiversity
; Forest Management
; Forestry
; Hardwoods
; Herbicides
; Plants
; Regression Analysis
; Weed Control
; Mississippi
; United States
英文摘要: Intensively managed pine forests in the southeastern U.S. now cover approximately 15.8. million. ha. Forest managers are increasingly expected to consider biodiversity in land management decisions. Habitat management, particularly dormant-season prescribed fire with or without prior herbicide application may provide an opportunity for achieving sustainability goals relative to biodiversity in intensively managed pine stands. Therefore, we investigated vegetation structure, coverage, and diversity responses to combinations of prescribed fire and herbicide (imazapyr) treatments within mid-rotation, thinned, intensively managed pine stands within a managed forest matrix in east-central Mississippi, USA during 1999-2008. We used a randomized complete block design of 6 mid-rotation, thinned pine stands (blocks) each with 4 treatments [control, burn only (dormant-season 3. year fire return interval), herbicide only (Arsenal AC® at 12. oz./acre), burn. +. herbicide) assigned to 10-ha experimental units. We measured vegetation structure (understory, midstory, and overstory components) and understory plant coverage using standard techniques from one year pre-treatment (1999; our baseline) through 9. years post-treatment (2008). To evaluate treatment effects, we used repeated measures mixed models analysis of covariance with baseline data as our covariate. We detected 338 plant species including 140 forbs, 5 ferns, 35 grasses, 11 herbaceous vines, 21 legumes, 26 sedges and rushes, 9 semi-woody vines, 76 woody plants, and 15 woody vine species. Treatment effects included concomitant reductions in upper level visual obstruction (m), increased herbaceous understory coverage, and hardwood midstory competition reduction. Herbicide was more effective at reducing hardwood midstory basal area, but repeated disturbances by prescribed fire maintained favorable vegetation structure conditions and improved understory plant species diversity throughout the latter years of study. Overstory pine basal area demonstrated positive responses to treatments. Prescribed fire and herbicide, within thinned, intensively managed pine stands at levels investigated here, appears to promote a stand structure consisting of a pine overstory and a diverse understory, reflective of historic conditions in the southeastern U.S. Implementation of these treatments can help forest managers achieve sustainable forestry goals in intensively managed pine stands of the southeastern U.S. © 2014 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/65842
Appears in Collections: 影响、适应和脆弱性
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作者单位: Department of Wildlife, Fisheries and Aquaculture, Mississippi State University, Box 9690, Mississippi State, MS 39762-9681, United States; Southern Timberlands Technology, Weyerhaeuser NR Company, P.O. Box 2288, Columbus, MS 39704, United States
Recommended Citation:
Iglay R.B.,Leopold B.D.,Miller D.A.. Vegetation responses to fire and herbicide in intensively managed, mid-rotation pine[J]. Forest Ecology and Management,2014-01-01,328