Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1016/j.foreco.2019.03.015 |
Long-term succession of closed boreal forests at their range limit in eastern North America shows resilience to fire and climate disturbances | |
Payette, Serge1; Fregeau, Mathieu3 | |
2019-05-15 | |
发表期刊 | FOREST ECOLOGY AND MANAGEMENT
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ISSN | 0378-1127 |
EISSN | 1872-7042 |
出版年 | 2019 |
卷号 | 440页码:101-112 |
文章类型 | Article |
语种 | 英语 |
国家 | Canada |
英文摘要 | The distribution of vegetation zones in northeastern North America forms a gradual transition from closed to open forests, and to tundra. Closed forests near the open forest/tundra boundary generally correspond to residual patches of a once larger forest community. Whether these forest patches have survived as untouched, firefree communities or as resilient communities during the Holocene remains unknown. To answer to this question, we reconstructed the successional history of two black spruce closed-crown forests and one jack pine forest near the northern limit of closed forest ecosystems. Stand-scale postfire succession was analysed based on charcoal macrofossils. Extensive C-14 dating and botanical identification of charcoal fragments located at the organic soil surface and buried in the mineral podzolic solum were used to reconstruct the successional pathways of the sites. The forest sites developed in a context of continuous fire disturbance, except for a short interval of several centuries. The fire history of the three sites is similar with a fire frequency of 34-37 fires over the last 5000-5800 years, which corresponds to a mean fire interval of 150-180 years. Based on parametric and nonparametric estimators, the regional fire regime of the Laforge area (combined fire data of two sites located about 7 km from each other) was most likely characterized by 38 fires over the last 5000-5800 years, i.e., at an interval of about 150-160 years. Birch (Betula papyrifera) was present in the spruce sites between 5800 and 3000 cal. years BP. Jack pine arrived at the pine site about 3000 cal. years BP, at the time when birch was extirpated from the spruce forests. The closed-crown forests near the open forest/tundra boundary are resilient postfire ecosystems which regenerated successfully since mid-Holocene. Compositional change of these forests, which led to the decline of birch but maintained the dominance of conifers, appears related to cooler and wetter conditions of late Holocene. Climatic conditions also slowed the eastward migration of jack pine, which explains the late arrival of this species at its northeastern range. Our data suggest that fire disturbance in these sites of the boreal biome has been a continuous and positive regenerative process since mid-Holocene despite the influence of climatic change on the tree flora. |
英文关键词 | Betula papyrifera Boreal forest Chronosequence Climate change Fire disturbance Holocene Picea mariana Pinus banksiana Resilience Subarctic Succession |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000464297900011 |
WOS关键词 | HOLOCENE VEGETATION HISTORY ; JACK PINE ; BLACK SPRUCE ; DYNAMICS ; QUEBEC ; LABRADOR ; TUNDRA ; REGENERATION ; MACROFOSSIL ; SEVERITY |
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/183207 |
专题 | 气候变化 |
作者单位 | 1.Univ Laval, Dept Biol, 1045 Ave Med, Quebec City, PQ G1V 0A6, Canada; 2.Univ Laval, Ctr Etud Nord, 1045 Ave Med, Quebec City, PQ G1V 0A6, Canada; 3.Minist Forets Faune & Parcs, 5700,4e Ave Ouest, Quebec City, PQ G1H 6R1, Canada |
推荐引用方式 GB/T 7714 | Payette, Serge,Fregeau, Mathieu. Long-term succession of closed boreal forests at their range limit in eastern North America shows resilience to fire and climate disturbances[J]. FOREST ECOLOGY AND MANAGEMENT,2019,440:101-112. |
APA | Payette, Serge,&Fregeau, Mathieu.(2019).Long-term succession of closed boreal forests at their range limit in eastern North America shows resilience to fire and climate disturbances.FOREST ECOLOGY AND MANAGEMENT,440,101-112. |
MLA | Payette, Serge,et al."Long-term succession of closed boreal forests at their range limit in eastern North America shows resilience to fire and climate disturbances".FOREST ECOLOGY AND MANAGEMENT 440(2019):101-112. |
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