DOI: 10.1016/j.foreco.2012.06.022
Scopus记录号: 2-s2.0-84872687673
论文题名: Acidifying effect of removal of tree stumps and logging residues as compared to atmospheric deposition
作者: Iwald J. ; Löfgren S. ; Stendahl J. ; Karltun E.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2013
卷: 290 起始页码: 49
结束页码: 58
语种: 英语
英文关键词: Acid deposition
; Bioenergy
; Biological acidification
; Logging residues
; Stumps
Scopus关键词: Acid deposition
; Atmospheric depositions
; Base cations
; Bio-energy
; Cation extraction
; Consequence analysis
; Harvest intensity
; Heating value
; Higher heating value
; Logging residues
; Lower acids
; National forest inventories
; Norway spruce
; Nutrient balance
; Per unit
; Picea Abies (L.) Karst
; Pinus sylvestris
; Scots pine
; Stumps
; Tree harvesting
; Tree species
; Tree stumps
; Air pollution
; Calorific value
; Forestry
; Harvesting
; Meteorological problems
; Negative ions
; Plants (botany)
; Positive ions
; Acidification
; acid deposition
; acidification
; biomass
; data processing
; estimation method
; forest inventory
; harvesting
; logging (timber)
; nutrient budget
; tree stump
; Acidification
; Air Pollution
; Anions
; Biochemistry
; Calorimetry
; Harvesting
; Logging
; Nutrition
; Stumps
; Sweden
; Sweden
; Betula
; Picea
; Picea abies
; Pinus sylvestris
英文摘要: Harvesting of stumps and logging residues for bioenergy can be expected to increase in the future. An increased biomass export from the forest will increase the biological acidification, measured as net cation (cations-anions) export. The aim of this study is to estimate the acidifying effect that various levels of harvesting of tree stumps and logging residues will have in Sweden, and compare this with the acidification currently caused by acid deposition. Estimations of yearly logging of Scots pine (Pinus sylvestris L.), Norway spruce (Picea abies (L.) Karst.) and birch (Betula spp.) on county-level were made based on scenario data from forestry consequence analyses and data from the Swedish National Forest Inventory. Data of cation and anion contents in tree parts were used to calculate the net cation extraction per area unit resulting from harvesting of stumps, stem-wood and logging residues, respectively. County-level data were merged into data for three different regions representing a gradient in deposition and climate. Results indicate that harvesting of stumps constitutes 13-24% of total (stumps+stem-wood+logging residues) excess cation extraction, depending on harvest intensity and tree species. Harvesting of logging residues constitutes 27-45% of total net cation extraction. The higher acidifying effect of logging residues can be explained by the higher contents of base cations in needles and branches compared to stem-wood. In a comparison between total net cation extraction by tree harvesting and maximum levels of current acid deposition the acidifying effect of pine harvesting is 57-108% of that of acid deposition, the acidifying effect of spruce harvesting is 114-263% while the acidifying effect of birch harvesting is 60-171%. Concerning the amount of acid input to the soil per unit heating value as biofuel, stump harvesting generates 12-27eqH+ MWh-1 while logging residue harvesting generates 39-66eqH+ MWh-1. Stump harvesting generates a higher heating value per area unit than logging residue harvesting and results in a lower acid input to the soil per unit heating value generated. Thus, from a strict nutrient balance and acidification perspective stump harvesting is a better alternative than harvesting of logging residues. © 2012 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/66791
Appears in Collections: 影响、适应和脆弱性
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作者单位: Department of Soil and Environment, Swedish University of Agricultural Sciences, P.O. Box 7014, SE-750 07 Uppsala, Sweden; Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences, P.O. Box 7050, SE-750 07 Uppsala, Sweden
Recommended Citation:
Iwald J.,Löfgren S.,Stendahl J.,et al. Acidifying effect of removal of tree stumps and logging residues as compared to atmospheric deposition[J]. Forest Ecology and Management,2013-01-01,290