期刊
CANADIAN JOURNAL OF FOREST RESEARCH
卷 46, 期 7, 页码 943-949出版社
CANADIAN SCIENCE PUBLISHING, NRC RESEARCH PRESS
DOI: 10.1139/cjfr-2016-0047
关键词
forest succession; historical ecology; ecosystem-based management; preindustrial forests; presettlement forests
类别
资金
- Natural Science and Engineering Research Council of Canada (NSERC)
- Fonds de recherche du Quebec Nature et Technologies (FRQNT)
- forest product company TEMBEC Inc. (Temiscaming, Quebec)
- Conference regionale des elus de l'Abitibi-Temiscamingue (CREAT)
- Ministere des Forets, de la Faune et des Parcs of Quebec (MFFP)
Land use changes that are linked to European settlement of North America have transformed northeastern temperate forest landscapes. Many studies report a regional increase of young early-successional forests due to high disturbance rates since the preindustrial era (fire, land clearing, and clear-cuts). In this study, we document specific compositional changes to present-day mature forest landscapes, which have only been managed with partial cutting (high-grading and diameter-limit cuts) since the preindustrial era in southwestern Quebec. We resurveyed 108 forest observations that were extracted from logbooks of former logging concession limits (surveyed between 1870 and 1890). Results highlight an increase in mid-to late-successional shade-tolerant taxa (Betula alleghaniensis Britton, Thuja occidentalis L., Acer saccharum Marsh.) at the expense of preindustrial dominant conifers (Abies balsamea (L.) Mill., Pinus strobus L.). Former logging activities and spruce budworm (Choristoneura fumiferana Clemens) outbreaks appear to be the main drivers of these changes, which were also strongly structured across the topographic gradient. To some extent, these results highlight the relevance of partial cutting management, as it has allowed long-term maintenance of a mid-to late-successional forest composition, while also pointing the need for P. strobus restoration. We conclude that by allowing site-specific comparisons, the resurvey of historical observations greatly improve the analytical strengths of historical reconstruction.
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