Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1016/j.foreco.2017.12.029 |
Management implications of varying gap detection height thresholds and other canopy dynamics processes in temperate deciduous forests | |
Senecal, Jean-Francois1; Doyon, Frederik2; Messier, Christian2 | |
2018-02-15 | |
发表期刊 | FOREST ECOLOGY AND MANAGEMENT |
ISSN | 0378-1127 |
EISSN | 1872-7042 |
出版年 | 2018 |
卷号 | 410页码:84-94 |
文章类型 | Article |
语种 | 英语 |
国家 | Canada |
英文摘要 | Gap dynamics is the main process by which forest renewal happens in many forest biomes in the world. Under the classical gap dynamics model, only canopy gaps are considered as a dynamic zone. It is also assumed that gapless canopy height change is either uncommon or unimportant for forest dynamics, even though its frequency has never been quantified. In the temperate deciduous forest biome of Quebec, Canada, forest management uses selection cutting to emulate gap dynamics, but little is known about the differences in canopy dynamics between unmanaged and managed forests. Here, we investigated five canopy height change processes: three generating positive height change (canopy growth, gap closure and gap filling) and two generating negative height change (gap creation and canopy height erosion) using multi-temporal LiDAR data in unmanaged and managed (by partial cutting) forests at different periods during the last 24 years. Canopy height erosion, which is canopy height reduction without gap formation, was very common in all studied forests, whatever the gap detection height thresholds used. This canopy process was often more frequent than new canopy gaps and as important in terms of canopy volume reduction. Gap closure rates suggest that canopy gaps will remain more frequent in managed forests 30 years after cuts compared to unmanaged forests. Our results show that it will take at least 30 years after cuts for natural canopy dynamics to recover. We also show that measurements of canopy dynamics processes are sensitive to canopy gap detection height thresholds. This sensitivity is clearly limiting the reproducibility and the comparability of studies in gap ecology. |
英文关键词 | Canopy gaps Gap dynamics Multi-temporal LiDAR Temperate forest Partial cutting Canopy height erosion Canopy gap detection height threshold Old-growth forest |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000426233100009 |
WOS关键词 | MAJOR ICE STORM ; OLD-GROWTH ; SILVICULTURAL SYSTEMS ; DISTURBANCE ; SELECTION ; TREEFALLS ; RECOVERY ; SIZE |
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/22415 |
专题 | 气候变化 |
作者单位 | 1.Univ Quebec Montreal, Ctr Etud Foret, Dept Sci Biol, Montreal, PQ H3C 3P8, Canada; 2.Univ Quebec Outaouais, Inst Sci Foret Temperee ISFORT, Dept Sci Nat, Ripon, PQ J0V 1V0, Canada |
推荐引用方式 GB/T 7714 | Senecal, Jean-Francois,Doyon, Frederik,Messier, Christian. Management implications of varying gap detection height thresholds and other canopy dynamics processes in temperate deciduous forests[J]. FOREST ECOLOGY AND MANAGEMENT,2018,410:84-94. |
APA | Senecal, Jean-Francois,Doyon, Frederik,&Messier, Christian.(2018).Management implications of varying gap detection height thresholds and other canopy dynamics processes in temperate deciduous forests.FOREST ECOLOGY AND MANAGEMENT,410,84-94. |
MLA | Senecal, Jean-Francois,et al."Management implications of varying gap detection height thresholds and other canopy dynamics processes in temperate deciduous forests".FOREST ECOLOGY AND MANAGEMENT 410(2018):84-94. |
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