Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1016/j.foreco.2019.05.059 |
Effectiveness and impacts of girdling treatments in a conifer-encroached Oregon white oak woodland | |
Kane, Jeffrey M.1; Engber, Eamon A.2; McClelland, John E.2 | |
2019-09-01 | |
发表期刊 | FOREST ECOLOGY AND MANAGEMENT
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ISSN | 0378-1127 |
EISSN | 1872-7042 |
出版年 | 2019 |
卷号 | 447页码:77-86 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | The prolonged absence of fire in Oregon white oak (Quercus garryana) woodlands and savannas of the Pacific Northwest has resulted in substantial conifer encroachment over the past century. Use of low intensity prescribed burns often lacks sufficient intensity to kill larger encroached trees, requiring alternative approaches. In the Bald Hills region of Redwood National Park, managers have implemented girdling treatments to kill Douglas fir (Pseudotsuga menziesii) over the past two decades with the objective of recovering remnant oaks and restoring historical woodland area. We surveyed 258 girdled Douglas-fir to examine the effectiveness of girdling treatments to create snags and the impacts of girdling on tree regeneration and fuel recruitment over a 17 year time since girdling chronosequence. Girdling was successful in killing 91% of the treated Douglas-fir independent of the method used (axe or chainsaw). Larger trees with a low girdle width-to-tree diameter ratio tended to survive girdling. Trees with a girdle width-to-tree diameter ratio >= 1 were most effective at killing trees. Snags generated through girdling decayed over time but did not significantly reduce in height over the time period examined. Bird activity was observed on 19% of snags across the chronosequence but 88% of 10 y old snags had signs of bird foraging. Fine woody fuel loading and fuelbed depths were potentially elevated 7 years after treatment but did not persist through the time period examined. Regeneration of Douglas-fir and oaks were highly variable and did not seem to be clearly linked to girdling activity. Our results indicate that girdling is a highly effective treatment to kill Douglas-fir and aid restoration of Oregon oak woodlands with limited negative impacts on surface fuel hazards or regeneration. |
英文关键词 | Douglas-fir Fuel loading Pseudotsuga menziesii Quercus garryana Regeneration Restoration Snags Tree mortality |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000474329400008 |
WOS关键词 | PRESCRIBED FIRE ; DOUGLAS-FIR ; PSEUDOTSUGA-MENZIESII ; PRAIRIES ; REMOVAL ; GROWTH ; FOREST ; RESPONSES ; DYNAMICS ; SAVANNA |
WOS类目 | Forestry |
WOS研究方向 | Forestry |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/186653 |
专题 | 气候变化 |
作者单位 | 1.Humboldt State Univ, Dept Forestry & Wildland Resources, One Harpst St, Arcata, CA 95521 USA; 2.Redwood Natl Pk, 121200 Highway 101, Orick, CA 95555 USA |
推荐引用方式 GB/T 7714 | Kane, Jeffrey M.,Engber, Eamon A.,McClelland, John E.. Effectiveness and impacts of girdling treatments in a conifer-encroached Oregon white oak woodland[J]. FOREST ECOLOGY AND MANAGEMENT,2019,447:77-86. |
APA | Kane, Jeffrey M.,Engber, Eamon A.,&McClelland, John E..(2019).Effectiveness and impacts of girdling treatments in a conifer-encroached Oregon white oak woodland.FOREST ECOLOGY AND MANAGEMENT,447,77-86. |
MLA | Kane, Jeffrey M.,et al."Effectiveness and impacts of girdling treatments in a conifer-encroached Oregon white oak woodland".FOREST ECOLOGY AND MANAGEMENT 447(2019):77-86. |
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