DOI: 10.1016/j.foreco.2016.07.041
Scopus记录号: 2-s2.0-84979889766
论文题名: Using forest ecosystem simulation model EFIMOD in planning uneven-aged forest management
作者: Shanin V. ; Valkonen S. ; Grabarnik P. ; Mäkipää R.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2016
卷: 378 起始页码: 193
结束页码: 205
语种: 英语
英文关键词: Forest management
; Selection cuttings
; Simulation modelling
; Spruce forest
; Timber production
; Uneven-aged stands
Scopus关键词: Computer simulation
; Ecology
; Ecosystems
; Efficiency
; Harvesting
; Nitrogen
; Nitrogen removal
; Sustainable development
; Timber
; Forest carbon sequestration
; Net ecosystem production
; Nitrogen-use efficiency
; Selection cutting
; Spruce forest
; Timber production
; Uneven-aged forest management
; Uneven-aged stands
; Forestry
; boreal forest
; carbon sequestration
; coniferous forest
; cutting (excavation)
; ecological modeling
; ecosystem response
; environmental monitoring
; experimental study
; forest ecosystem
; forest management
; harvesting
; management practice
; net ecosystem production
; soil carbon
; stand structure
; sustainable development
; Finland
; Norway
; Picea
; Picea abies
英文摘要: Uneven-aged forest management is suggested to be a sustainable management alternative in boreal forests, but knowledge on applicable harvest intensities is very limited as majority of the studies has focused on even-aged management practices. The ecosystem model EFIMOD was used to assess the effect of selection cuttings on ecosystem production, carbon sequestration and volume increment in spruce stands. The model was calibrated and validated against experimental data from 20 permanent forest plots in southern Finland where stand responses to uneven-aged management had been monitored for 25 years. The simulated scenarios started with planting trees on bare land, simulation of first decades according to even-aged management, and a subsequent transformation into uneven-aged stand structure and management. Simulated selection cutting scenarios contained variations of both harvest interval (10–30 years) and postharvest stand density (basal area 8–16 m2 ha−1). We hypothesized that longer harvest intervals and higher post-harvest basal areas will positively affect the net ecosystem production, nitrogen use efficiency, and forest carbon sequestration. The results presented here are for a period of 90 years. Simulations showed that net ecosystem production (NEP) increased from 0.25 to 0.5 kg m−2 a−1 of carbon with longer harvest intervals and higher postharvest density, and was generally less than that at undisturbed development. Nitrogen use efficiency (NUE) varied from 100 kg NPP per kg consumed N for heavy cuttings to 300 kg NPP per kg consumed N for light removal of trees. Changes in soil carbon stocks were negative for most scenarios (5–20% decline in terms of total soil C), and the decline was most pronounced with lowest postharvest density and short harvest intervals. The volume of harvested timber was between 320 and 400 m3 ha−1 for a 60-year period. Longer harvest intervals resulted in increased timber production. Stem volume growth (5–7 m3 ha−1 a−1) was equally affected by both harvesting parameters. The cumulative volume of deadwood of 80–120 m3 ha−1 was substantially higher with the longest harvest interval (30 years) than with the shorter alternatives where it comprised 40–60 m3 ha−1. The simulations provide novel results on different harvesting options for uneven-aged forest management of boreal Norway spruce stands. These results fill a gap in knowledge on ecosystem responses to alternative management regimes and support the development of sustainable management practices. © 2016 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/64763
Appears in Collections: 影响、适应和脆弱性
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作者单位: Institute of Physicochemical and Biological Problems in Soil Science of the Russian Academy of Sciences, 142290 Institutskaya st., 2, Pushchino, Moscow Region, Russian Federation; Center for Forest Ecology and Productivity of the Russian Academy of Sciences, 117997 Profsoyuznaya st., 84/32, bld. 14, Moscow, Russian Federation; Natural Resources Institute Finland, Jokiniemenkuja 1, P.O. Box 18, Vantaa, Finland
Recommended Citation:
Shanin V.,Valkonen S.,Grabarnik P.,et al. Using forest ecosystem simulation model EFIMOD in planning uneven-aged forest management[J]. Forest Ecology and Management,2016-01-01,378