DOI: 10.1016/j.foreco.2014.03.025
Scopus记录号: 2-s2.0-84899050877
论文题名: Phosphorus export from drained Scots pine mires after clear-felling and bioenergy harvesting
作者: Kaila A. ; Sarkkola S. ; Laurén A. ; Ukonmaanaho L. ; Koivusalo H. ; Xiao L. ; O'Driscoll C. ; Asam Z.-U.-Z. ; Tervahauta A. ; Nieminen M.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2014
卷: 325 起始页码: 99
结束页码: 107
语种: 英语
英文关键词: Clear-felling
; Peatland forestry
; Phosphorus
; Stump harvesting
; Water table level
; Whole-tree harvesting
Scopus关键词: Catchments
; Groundwater
; Harvesting
; Peat
; Phosphorus
; Runoff
; Timber
; Water levels
; Wetlands
; Clear-felling
; Peatland
; Stump harvesting
; Water table level
; Whole tree harvesting
; Forestry
; bioenergy
; clearcutting
; coniferous tree
; forest management
; harvesting
; mire
; peatland
; phosphorus
; water table
; Forestry
; Ground Water
; Harvesting
; Peat
; Phosphorus
; Runoff
; Wetlands
; Finland
英文摘要: We studied phosphorous (P) export after clear-felling from eight Scots pine dominated, hydrologically isolated catchment areas located on a low-P sorptive peatland site in southern Finland, using the paired-catchments approach. Four of the catchment areas were clear-felled traditionally with stem-only harvesting, two areas were clear-felled using whole-tree harvesting, and the remaining two areas were treated with both whole-tree harvesting and stump harvesting. The effect of clear-felling on P loads varied considerably between the catchment areas from no increase to an increase of over 1.5kgha-1 of P during the three-year-study period. The most significant factor explaining the variation in P loads and the variation in P concentrations in outflow water from clear-felled peatland catchments was the post-harvest water level position. At water table levels <20cm below ground level (bgl), the P release from peat was greatly increased, and no influence was observed on P release at levels greater than 30cmbgl. The water table depth explained about 50% of the variation in harvest induced P export, while the harvest method and the peat P sorption characteristics were not significant in explaining harvest-induced P loads or P concentrations after harvesting. The results of our study suggest that management of harvest residues may not be an efficient means of managing P export in operational forestry. In addition, forest management practices that do not lead to a rising of water table level near the soil surface in the entire harvest area, such as strip cutting and small-scale clear-cutting or harvesting small canopy openings, should be studied in order to reduce P export. © 2014 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/65923
Appears in Collections: 影响、适应和脆弱性
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作者单位: Finnish Forest Research Institute, PO Box 18, FI-01301 Vantaa, Finland; University of Helsinki, Department of Forest Sciences, Forest Sciences Building, Viikki, PO Box 27, FI-00014 Helsinki, Finland; Finnish Forest Research Institute, PO Box 68, FI-80101 Joensuu, Finland; Aalto University School of Engineering, Department of Civil and Environmental Engineering, Water Resources Engineering, PO Box 15200, FI-00076 Aalto, Finland; Trinity College Dublin, School of Engineering, College Green, Dublin 2, Ireland
Recommended Citation:
Kaila A.,Sarkkola S.,Laurén A.,et al. Phosphorus export from drained Scots pine mires after clear-felling and bioenergy harvesting[J]. Forest Ecology and Management,2014-01-01,325