气候变化领域集成服务门户(CCPortal): Forest management has reduced the structural diversity of residual boreal old-growth forest landscapes in Eastern Canada

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DOI	10.1016/j.foreco.2019.117765
	Forest management has reduced the structural diversity of residual boreal old-growth forest landscapes in Eastern Canada
	Martin M.; Boucher Y.; Fenton N.J.; Marchand P.; Morin H.
发表日期	2020
ISSN	0378-1127
卷号	458
英文摘要	The impact of traditional even-aged forest management on landscape age structure, tree composition, and connectivity has been well documented. Very little, however, is known about the impact on stand structural diversity. This study aims to compare the structural and abiotic characteristics of forest stands disturbed by clearcut logging and by stand-replacing fire in Quebec's boreal landscapes. We hypothesized that unlike fire, logging specifically targeted stands having a higher economic value, i.e., merchantable volume, leaving altered forest characteristics on post-harvested landscapes. We compared two aerial forest surveys of a 2200 km2 study area, one survey completed before any logging activity (preindustrial survey; 1980s), and the second survey collected >10 years after logging activity (modern survey; 2000s). Forest stands at the time of the preindustrial survey were primary forests. We identified stands as either burned, logged, or left aside after forest management of the area (remaining stands) between the two surveys and compared their structural and abiotic characteristics using logistic regression. The structural and abiotic characteristics of burned and logged stands differed significantly. Relative to the burned stands, logged stands were older, denser, and marked by poorer drainage and a higher proportion of black spruce; therefore post-harvest and post-burn landscapes differed in terms of their structural diversities. Traditional even-aged forest management has significantly altered the boreal forest landscape by targeting specific stands having higher economic value and leaving behind stands of lower economic value. Remaining high economic stands should be protected, and a more balanced approach to harvesting must be used in the context of ecosystem-based management. © 2019 Elsevier B.V.
关键词	Antennas Deforestation Ecosystems Harvesting Ecosystem-based management Forest fires Forestry practices Overmature forests Pre-industrial Surveys boreal forest clearcutting forest fire forest management forestry practice harvesting landscape old-growth forest Characteristics Deforestation Ecosystems Forest Fires Forest Management Harvesting Logging Surveys Canada Quebec [Canada]Picea mariana
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/133080
推荐引用方式 GB/T 7714	Martin M.,Boucher Y.,Fenton N.J.,et al. Forest management has reduced the structural diversity of residual boreal old-growth forest landscapes in Eastern Canada[J]. Forest Ecology and Management,2020,458.
APA	Martin M.,Boucher Y.,Fenton N.J.,Marchand P.,&Morin H..(2020).Forest management has reduced the structural diversity of residual boreal old-growth forest landscapes in Eastern Canada.,458.
MLA	Martin M.,et al."Forest management has reduced the structural diversity of residual boreal old-growth forest landscapes in Eastern Canada".458(2020).