DOI: 10.5194/hess-23-1611-2019
论文题名: Projected decrease in wintertime bearing capacity on different forest and soil types in Finland under a warming climate
作者: Lehtonen I. ; Venäläinen A. ; Kämäräinen M. ; Asikainen A. ; Laitila J. ; Anttila P. ; Peltola H.
刊名: Hydrology and Earth System Sciences
ISSN: 1027-5606
出版年: 2019
卷: 23, 期: 3 起始页码: 1611
结束页码: 1631
语种: 英语
Scopus关键词: Bearing capacity
; Climate change
; Frozen soils
; Harvesting
; Logging (forestry)
; Snow
; Timber
; Wetlands
; Ground bearing capacities
; Resource-efficient
; Snow accumulation
; Soil temperature models
; Timber harvesting
; Trafficability
; Warming climate
; Wood harvesting
; Climate models
; bearing capacity
; climate change
; climate modeling
; forest soil
; frost
; peatland
; root system
; snow accumulation
; soil temperature
; soil type
; timber harvesting
; tree
; winter
; Finland
英文摘要: Trafficability in forest terrain is controlled by ground-bearing capacity, which is crucial from the timber harvesting point of view. In winter, soil frost affects the most the bearing capacity, especially on peatland soils which have in general low bearing capacity. Ground frost similarly affects the bearing capacity of forest truck roads. A 20cm thick layer of frozen soil or 40cm thick layer of snow on the ground may already be sufficient for heavy forest harvesters. In this work, we studied the impacts of climate change on soil frost conditions and, consequently, on ground-bearing capacity from the timber harvesting point of view. The number of days with good wintertime bearing capacity was modelled by using a soil temperature model with a snow accumulation model and wide set of downscaled climate model data until the end of the 21st century. The model was calibrated for different forest and soil types. The results show that by the mid-21st century, the conditions with good bearing capacity will decrease in wintertime in Finland, most likely by about 1 month. The decrease in soil frost and wintertime bearing capacity will be more pronounced during the latter half of the century, when drained peatlands may virtually lack soil frost in most of winters in southern and western Finland. The projected decrease in the bearing capacity, accompanied with increasing demand for wood harvesting from drained peatlands, induces a clear need for the development of sustainable and resource-efficient logging practices for drained peatlands. This is also needed to avoid unnecessary harvesting damages, like rut formation on soils and damage to tree roots and stems. © 2019 The Author(s). Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/163011
Appears in Collections: 气候变化与战略
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作者单位: Lehtonen, I., Finnish Meteorological Institute, Helsinki, 00101, Finland; Venäläinen, A., Finnish Meteorological Institute, Helsinki, 00101, Finland; Kämäräinen, M., Finnish Meteorological Institute, Helsinki, 00101, Finland; Asikainen, A., Natural Resources Institute Finland, Joensuu, 80100, Finland; Laitila, J., Natural Resources Institute Finland, Joensuu, 80100, Finland; Anttila, P., Natural Resources Institute Finland, Joensuu, 80100, Finland; Peltola, H., School of Forest Sciences, University of Eastern Finland, Joensuu, 80101, Finland
Recommended Citation:
Lehtonen I.,Venäläinen A.,Kämäräinen M.,et al. Projected decrease in wintertime bearing capacity on different forest and soil types in Finland under a warming climate[J]. Hydrology and Earth System Sciences,2019-01-01,23(3)