DOI: 10.1016/j.foreco.2014.12.017
Scopus记录号: 2-s2.0-84920911151
论文题名: Stand productivity following whole-tree harvesting in early thinning of Scots pine stands in Sweden
作者: Egnell G. ; Ulvcrona K.A.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2015
卷: 340 起始页码: 40
结束页码: 45
语种: 英语
英文关键词: Bioenergy
; Energy harvest
; Full tree harvest
; Harvest intensity
; Nitrogen
; Nutrient availability
Scopus关键词: Biomass
; Ecology
; Energy harvesting
; Harvesting
; Nitrogen
; Nutrients
; Bio-energy
; Energy generations
; Harvest intensity
; Nutrient availability
; Pre-commercial thinning
; Renewable energies
; Stand productivities
; Whole tree harvesting
; Forestry
; bioenergy
; boreal forest
; coniferous forest
; energy policy
; forest management
; growth rate
; logging (timber)
; nitrogen
; nutrient availability
; power generation
; renewable resource
; stand structure
; thinning
; Sweden
; Pinus sylvestris
英文摘要: Swedish energy policy and the introduction of targets concerning the proportion of renewable energy used within Europe have increased the demand for forest biomass that can be used for energy generation. This includes industrial forest residues, residues from logging operations, and whole trees harvested during early thinnings. However, the sustainability of utilizing the nutrient-rich parts of the trees, such as needles and twigs, may be questionable. It is therefore important to assess the impact of whole-tree harvesting (WTH) in thinnings on the growth of the remaining trees in the stand, particularly in boreal forests where growth is normally limited by the availability of nutrients. Here we present data on 22. years of volume growth following WTH practiced in early thinning compared with the alternative, a late pre-commercial thinning, in which all of the biomass including the stem is left on site, from four Scots pine (. Pinus sylvestris L.) dominated experimental sites in Sweden.WTH caused a statistically significant 4% growth reduction over the entire duration of the experiment. Analyses of volume growth at three different points in time following the experiments' establishment suggested that this growth reduction occurred largely during the first growth period (0-8. years), when there was a significant negative growth effect. No statistically significant treatment effect on volume growth was detected for the second and third periods. The results for the two treatments are compared and discussed in relation to previously published findings concerning stand growth following WTH during thinning. © 2015 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/65547
Appears in Collections: 影响、适应和脆弱性
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作者单位: Department of Forest Ecology and Management, Swedish University of Agricultural Sciences, Skogsmarksgränd, Umeå, Sweden; Department of Forest Biomaterials and Technology, Swedish University of Agricultural Sciences, Skogsmarksgränd, Umeå, Sweden
Recommended Citation:
Egnell G.,Ulvcrona K.A.. Stand productivity following whole-tree harvesting in early thinning of Scots pine stands in Sweden[J]. Forest Ecology and Management,2015-01-01,340