Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1016/j.foreco.2017.12.003 |
Effects of partial harvesting on species and structural diversity in aspen dominated boreal mixedwood stands | |
Yang, Hua1; Man, Rongzhou2 | |
2018-02-01 | |
发表期刊 | FOREST ECOLOGY AND MANAGEMENT
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ISSN | 0378-1127 |
EISSN | 1872-7042 |
出版年 | 2018 |
卷号 | 409页码:653-659 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; Canada |
英文摘要 | Partial harvesting is thought to result in more structurally diverse forest stands, providing a promising alternative to clearcutting and helping balance timber production and biodiversity conservation. Evidence for this hypothesis is based mostly on understory vegetation communities, with little information available on how partial harvesting affects tree species and structural diversity. In this study, we examined overstory and understory tree species and structural diversity of boreal mixedwoods over 20 years in stands that were un-harvested, partially harvested with 40% canopy removal, and clearcut As expected, clearcutting reduced overstory tree species and structural diversity relative to that of unharvested stands; partial harvesting, however, did not affect neighbourhood (area of 4 trees including one subject tree and 3 neighbours) or stand diversity until after a forest tent caterpillar outbreak that occurred during years 3-5 post-harvesting. The insect-induced trembling aspen (Populus tremuloides Michx.) mortality was higher in the partially harvested than in the unharvested areas decreasing structural diversity at both neighbourhood and stand scales. In comparison, within stand variations (horizontal complexity or spatial heterogeneity) in neighbourhood diversity values (Shannon species diversity, Shannon structural diversity by 2-m height class, and structural diversity by height variation) increased following the insect outbreak. The post-harvesting temporal dynamics of overstory diversity appeared time dependent and related to harvest removal, forest tent caterpillar defoliation, and growth of released balsam fir (Abies balsamea (L.) Mill.) and aspen regeneration. In all treatments, understory diversity was decreased by clearcutting, which stimulated profuse aspen suckering, and abundant balsam fir regeneration. We conclude that partial harvesting with 40% canopy removal did not significantly change tree species or structural diversity of boreal mixedwood stands in northeastern Ontario, Canada. Changes in overstory diversity following a forest tent caterpillar outbreak, however, suggest that partial harvesting that removes more of the canopy and reduces individual tree dominance may increase species diversity and within-stand structural variation but reduce structural diversity in the overstory. |
英文关键词 | Partial cut Neighbourhood diversity Spatial heterogeneity Forest tent caterpillar Trembling aspen Balsam fir |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000425578000063 |
WOS关键词 | TREMBLING ASPEN ; SILVICULTURAL SYSTEMS ; POPULUS-TREMULOIDES ; REGENERATION DYNAMICS ; BRITISH-COLUMBIA ; CONIFER STAND ; WHITE SPRUCE ; PARTIAL CUTS ; FOREST ; CANADA |
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/24023 |
专题 | 气候变化 |
作者单位 | 1.Beijing Forestry Univ, Coll Forestry, 35 Qinghua East Rd, Beijing, Peoples R China; 2.Ontario Forest Res Inst, Ontario Minist Nat Resources & Forestry, 1235 Queen St East, Sault Ste Marie, ON P6A 2E5, Canada |
推荐引用方式 GB/T 7714 | Yang, Hua,Man, Rongzhou. Effects of partial harvesting on species and structural diversity in aspen dominated boreal mixedwood stands[J]. FOREST ECOLOGY AND MANAGEMENT,2018,409:653-659. |
APA | Yang, Hua,&Man, Rongzhou.(2018).Effects of partial harvesting on species and structural diversity in aspen dominated boreal mixedwood stands.FOREST ECOLOGY AND MANAGEMENT,409,653-659. |
MLA | Yang, Hua,et al."Effects of partial harvesting on species and structural diversity in aspen dominated boreal mixedwood stands".FOREST ECOLOGY AND MANAGEMENT 409(2018):653-659. |
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