DOI: 10.1016/j.foreco.2017.09.022
Scopus记录号: 2-s2.0-85029490277
论文题名: Impacts of timber forwarding on physical properties of forest soils in southern Finland
作者: Toivio J. ; Helmisaari H.-S. ; Palviainen M. ; Lindeman H. ; Ala-Ilomäki J. ; Sirén M. ; Uusitalo J.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2017
卷: 405 起始页码: 22
结束页码: 30
语种: 英语
英文关键词: Rut formation
; Soil compaction
; Soil damage
; Soil protection
; Timber harvesting
英文摘要: Forest harvesting activities can cause soil damage and disturbance through soil compaction, rut formation and soil mixing. These affect the soil structure and functions and forest productivity. Soil compaction results for instance in increased bulk density and decreased porosity, affecting soil moisture, water infiltration and aeration. The effects of timber forwarding on soil physical properties have gained little attention in boreal forests. These issues will become more important in the future since harvesting operations on unfrozen soils are getting more common due to the anticipated climate warming. In this study, changes of forest soil physical properties (bulk density, moisture content and porosity) after 1–10 forwarder passes on two fine-grained mineral soil sites in southern Finland were analysed. Penetration resistance and rut formation were also measured. The measurements were performed in three periods with different soil moisture conditions. The test drives were carried out with a conventional 8-wheeled forwarder with total mass of 29.8 tons. Soil bulk density increased and porosity decreased after the machinery passes. However, soil moisture content increased on one site and mainly decreased on another. The first three passes caused the greatest compaction and rutting, the first pass having the strongest impact. After the first and third pass 34–55% and over 70% of the total mean rut depth was formed, respectively. Further passes caused only minor rutting. The compaction and changes of soil physical properties appeared to be greater in dry conditions. Rut formation and soil mixing were greater in moist conditions. The results are, however, site-specific, and more research is needed to achieve a better understanding of the relationships between different factors affecting impacts of timber forwarding on soil. © 2017 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/64080
Appears in Collections: 影响、适应和脆弱性
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作者单位: University of Helsinki, Department of Forest Sciences, P.O. Box 27, Helsinki, Finland; The Natural Resources Institute Finland, Green Technology Unit, Korkeakoulunkatu 7, Tampere, Finland; The Natural Resources Institute Finland, Green Technology Unit, Koetilantie 5, Helsinki, Finland
Recommended Citation:
Toivio J.,Helmisaari H.-S.,Palviainen M.,et al. Impacts of timber forwarding on physical properties of forest soils in southern Finland[J]. Forest Ecology and Management,2017-01-01,405