气候变化领域集成服务门户(CCPortal): Projected decrease in wintertime bearing capacity on different forest and soil types in Finland under a warming climate

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DOI	10.5194/hess-23-1611-2019
	Projected decrease in wintertime bearing capacity on different forest and soil types in Finland under a warming climate
	Lehtonen I.; Venäläinen A.; Kämäräinen M.; Asikainen A.; Laitila J.; Anttila P.; Peltola H.
发表日期	2019
ISSN	1027-5606
起始页码	1611
结束页码	1631
卷号	23 期号:3
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).
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
来源期刊	Hydrology and Earth System Sciences
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/159721
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
推荐引用方式 GB/T 7714	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],2019,23(3).
APA	Lehtonen I..,Venäläinen A..,Kämäräinen M..,Asikainen A..,Laitila J..,...&Peltola H..(2019).Projected decrease in wintertime bearing capacity on different forest and soil types in Finland under a warming climate.Hydrology and Earth System Sciences,23(3).
MLA	Lehtonen I.,et al."Projected decrease in wintertime bearing capacity on different forest and soil types in Finland under a warming climate".Hydrology and Earth System Sciences 23.3(2019).