DOI: 10.1016/j.foreco.2016.11.044
Scopus记录号: 2-s2.0-85007309043
论文题名: Environment-induced growth changes in the Finnish forests during 1971–2010 – An analysis based on National Forest Inventory
作者: Henttonen H.M. ; Nöjd P. ; Mäkinen H.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2017
卷: 386 起始页码: 22
结束页码: 36
语种: 英语
Scopus关键词: Climate change
; Environmental change
; Forest structure
; Height increments
; National forest inventories
; Predictor variables
; Silvicultural practices
; Southern Finland
; Stand characteristics
; Forestry
; basal area
; biomass
; climate change
; environmental impact
; forest dynamics
; forest inventory
; forest management
; growth response
; height determination
; paludification
; quantitative analysis
; silviculture
; spatiotemporal analysis
; stand structure
; volume change
; Finland
英文摘要: The annual growth of the forests of Finland has more than doubled in less than a century. While the increased growing stock and more efficient silviculture have contributed to the observed growth increase, there are also solid grounds for assuming that environmental changes have played a role. The aim of our study was to analyze and quantify the magnitude of changes of volume, basal area and height increment not attributable to changes in growing stock, forest structure and silvicultural practices. We used the extensive data from National Forest Inventories during 1971–2010 to develop models for volume, basal area and height increment of individual trees on mineral soils without ditching or paludification with tree and stand characteristics as predictor variables. Differences between the measured and predicted increment were used to detect environment-induced increment changes. Then, we estimated the average changes of volume increment per hectare and totals in millions of m3. Using this approach it was also possible to approximate the enhancing effects of volume increment change in growing stock volume. From 1971–1975 to 2006–2010, the environment-induced volume increment increase was estimated to be 8.98 million m3 a−1 (0.69 m3 ha−1 a−1), which equals to 37% of the total observed volume increment increase. In relative terms the environment-induced increment increase was larger in the northern regions (up to 45% of volume increment change). During 1971–1990, the difference between the observed and predicted change was small. A large shift was observed after the mid-1990s in all regions. While the environment-induced increment change was substantial, a considerably larger increase representing 63% of the change was attributed to growing stock volume and forest structure, which both changed due to differences in forest management. A comparison between the environment-induced increment changes and growing season temperature sums revealed similarities. In the southern Finland, April-May seemed to be influential, while in the north the temperature sum of May-September showed similar variation. As climate change is predicted to increase growing season temperatures, the trend can be expected to continue in the boreal conditions of Finland. © 2016 Elsevier B.V.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/64527
Appears in Collections: 影响、适应和脆弱性
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作者单位: Natural Resources Institute Finland (Luke), Economics and Society Unit, Viikinkaari 4, Helsinki, Finland; Natural Resources Institute Finland (Luke), Bio-based Business and Industry Unit, Jokiniemenkuja 1, Vantaa, Finland
Recommended Citation:
Henttonen H.M.,Nöjd P.,Mäkinen H.. Environment-induced growth changes in the Finnish forests during 1971–2010 – An analysis based on National Forest Inventory[J]. Forest Ecology and Management,2017-01-01,386