气候变化领域集成服务门户(CCPortal): Changes in growth dominance after partial cuts in even- and uneven-aged northern hardwood stands

CCPortal

DOI	10.1016/j.foreco.2020.118115
	Changes in growth dominance after partial cuts in even- and uneven-aged northern hardwood stands
	Lemire C.; Bédard S.; Guillemette F.; Pothier D.
发表日期	2020
ISSN	0378-1127
卷号	466
英文摘要	The success of partial cut applications to northern hardwood stands is based upon the contribution of harvested and residual trees to overall stand growth, which can be captured by a stand-level criterion, i.e, the growth dominance coefficient (GDC). The main objective of this study was to test the relevance of GDC in evaluating the success of partial cuts in even-aged and uneven-aged stands that were composed of sugar maple (Acer saccharum Marsh.) and yellow birch (Betula alleghaniensis Britt.). We first determined whether GDC that was calculated with two indicators of light capture, stem mass and tree leaf area, produced similar results after partial cutting in both stand structures. Second, using linear mixed models, we determined the effect of selection cutting on GDC in uneven-aged stands over the short- and medium-term, and evaluated effects of tree vigour and size before cutting on diameter growth response of trees after cutting. GDC based upon stem mass was similar to GDC based upon tree leaf area in even-aged stands (p = 0.7200), but was lower in uneven-aged stands (p < 0.001). Selection cutting in uneven-aged stands did not change GDC in the short- (p = 0.7721) and medium- (p = 0.8363) term. Yet, several trees that grew rapidly before cutting responded negatively to partial cutting, while many trees that grew slowly before cutting responded positively. Overall, assessing the success of partial cuts appears to be difficult using GDC, a stand-level criterion. Such assessments, as well as a better understanding of the effects of partial cuts, could be obtained through more detailed growth analyses that are performed at the tree level. © 2020 Elsevier B.V.
关键词	Hardwoods Acer saccharum Betula alleghaniensis Selection cutting Stand structures Thinning Tree leaf Tree selection Forestry cutting (process)deciduous forest dominance growth growth response leaf area index stand structure uneven development Acer Saccharum Betula Alleghaniensis Cutting Forestry Growth Hardwoods Thinning Trees Acer saccharum Betula alleghaniensis
语种	英语
来源机构	Forest Ecology and Management
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/132829
推荐引用方式 GB/T 7714	Lemire C.,Bédard S.,Guillemette F.,et al. Changes in growth dominance after partial cuts in even- and uneven-aged northern hardwood stands[J]. Forest Ecology and Management,2020,466.
APA	Lemire C.,Bédard S.,Guillemette F.,&Pothier D..(2020).Changes in growth dominance after partial cuts in even- and uneven-aged northern hardwood stands.,466.
MLA	Lemire C.,et al."Changes in growth dominance after partial cuts in even- and uneven-aged northern hardwood stands".466(2020).