DOI: 10.1016/j.foreco.2015.06.029
Scopus记录号: 2-s2.0-84945466685
论文题名: The influence of boreal tree species mixtures on ecosystem carbon storage and fluxes
作者: Laganière J. ; Cavard X. ; Brassard B.W. ; Paré D. ; Bergeron Y. ; Chen H.Y.H.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2015
卷: 354 起始页码: 119
结束页码: 129
语种: 英语
英文关键词: Boreal forest
; Carbon pools
; Mixedwood management
; Mixture-productivity relationships
; Tree species
; Trembling aspen
Scopus关键词: Carbon
; Ecology
; Ecosystems
; Lakes
; Mixtures
; Productivity
; Reforestation
; Boreal forests
; Carbon pool
; Mixedwood
; Tree species
; Trembling aspen
; Forestry
; abundance
; biomass allocation
; boreal forest
; carbon flux
; carbon sequestration
; coniferous tree
; deciduous tree
; fine root
; forest management
; mixed forest
; phytomass
; primary production
; regeneration
; soil respiration
; species richness
; Canada
; Picea mariana
; Pinus banksiana
英文摘要: Plant species mixtures are often seen as being able to achieve higher productivity and carbon (C) sequestration than their single-species counterparts, but it is unclear whether this is true in natural forests. Here, we investigated whether naturally-regenerated mixtures of common North American boreal tree species were more productive and stored more C than single-species stands. We also examined how closely the different C pools and fluxes were interrelated and whether these relationships varied with species composition. Single- and mixed-species stands of trembling aspen, black spruce and jack pine on mesic sites were selected in two regions of the Canadian boreal forest to assess aboveground and belowground productivity and C storage. Although previous studies conducted in these stands found synergistic effects of tree species mixtures on specific C pools and fluxes, such as higher organic layer C stocks and higher fine root productivity in some mixtures, no effects were detected on combined C pools or fluxes at the ecosystem level in the current study. Aspen abundance was linked with higher aboveground tree productivity, higher aboveground living biomass and higher soil heterotrophic respiration, indicating that aspen acts as a key driver of ecosystem C storage and fluxes in these natural forest ecosystems, more so than species richness. However, our results do not rule out the possibility of increased productivity and C storage in mixed stands under environmental conditions or stand developmental stages that are different from the ones studied here. Furthermore, when the entire forest ecosystem is considered (not only tree parts), synergistic effects of tree species mixtures may be more difficult to observe because the beneficial effect of species mixing on one specific C pool may be counterbalanced by a negative effect on another pool. © 2015. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/65329
Appears in Collections: 影响、适应和脆弱性
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作者单位: Natural Resources Canada, Canadian Forest Service, Laurentian Forestry Centre, 1055 du P.E.P.S., P.O. Box 10380, Stn. Sainte-Foy, Québec, QC, Canada; Department of Forest Ecology and Management, Swedish University of Agricultural Sciences, Umeå, Sweden; Faculty of Natural Resources Management, Lakehead University, 955 Oliver Road, Thunder Bay, ON, Canada; Institut de recherche sur les forêts, Université du Québec en Abitibi-Témiscamingue, 445 boulevard de l'Université, Rouyn-Noranda, QC, Canada
Recommended Citation:
Laganière J.,Cavard X.,Brassard B.W.,et al. The influence of boreal tree species mixtures on ecosystem carbon storage and fluxes[J]. Forest Ecology and Management,2015-01-01,354