| DOI: | 10.1016/j.foreco.2017.02.050
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| Scopus记录号: | 2-s2.0-85014756816
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| 论文题名: | Forest succession along a productivity gradient following fire exclusion |
| 作者: | Johnston J.D.
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| 刊名: | Forest Ecology and Management
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| ISSN: | 0378-1127
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| 出版年: | 2017
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| 卷: | 392 | | 起始页码: | 45
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| 结束页码: | 57
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| 语种: | 英语
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| Scopus关键词: | Conservation
; Fires
; Productivity
; Compositional changes
; Conifer forests
; Fire disturbance
; Forest density
; Forest succession
; Mixed-conifer forests
; Ponderosa pine forest
; Ponderosa pines
; Forestry
; Abies grandis
; Coniferophyta
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| 英文摘要: | Numerous studies have documented significant change in conifer forests of the American West following the cessation of recurrent fire at the end of the 19th century. But the successional dynamics that characterize different forested settings in the absence of fire remain poorly understood. This study reconstructs structural and compositional change over 150 years across a productivity gradient that includes both mixed conifer and ponderosa pine forests within a 688,000 ha study area in the southern Blue Mountains of eastern Oregon. Moister and more productive forest stands dominated by grand fir did not support more tree basal area and were not appreciably denser in 1860 than drier and less productive stands dominated by ponderosa pine. The greatest magnitude of change over the last 150 years has occurred in the most productive mixed conifer stands. Drier ponderosa pine dominated stands with significant live old-growth structure have experienced relatively little change even after more than a century without fire. Reconstruction of historical forest density in productive mixed conifer forests suggests these sites were historically coupled to the broader dry forest landscape pattern via frequent fire disturbance and should be a priority for restoration if a return to historical conditions is a goal of management. © 2017 Elsevier B.V. |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/64385
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| Appears in Collections: | 影响、适应和脆弱性
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作者单位: | Oregon State University, College of Forestry, 140 Peavy Hall, 3100 SW Jefferson Way, Corvallis, OR, United States
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| Recommended Citation: | |
Johnston J.D.. Forest succession along a productivity gradient following fire exclusion[J]. Forest Ecology and Management,2017-01-01,392
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