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Titlebook: Operational Efficiency in Forestry; Vol. 2: Practice C. R. Silversides,U. Sundberg Book 1989 Springer Science+Business Media Dordrecht 1989

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發(fā)表于 2025-3-25 04:57:15 | 只看該作者
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發(fā)表于 2025-3-25 08:02:50 | 只看該作者
Soil Compaction,e, consisting not only of the increased resistance due to lateral confinement from depth but also that due to the increase in soil density that results from the settlement motion itself, provided that the soil is not completely saturated. The settlement stops when equilibrium between stresses and re
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發(fā)表于 2025-3-25 15:36:43 | 只看該作者
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發(fā)表于 2025-3-25 18:32:07 | 只看該作者
Book 1989rvesting systems and the principles of management and control of forest operations. The influence of the forest on operations is described at length, the terrain, topography, forest soils as well as the engineering characteristics of trees and forest stands. It also considers the impact of oper- ati
25#
發(fā)表于 2025-3-25 21:56:13 | 只看該作者
0924-5480 t length, the terrain, topography, forest soils as well as the engineering characteristics of trees and forest stands. It also considers the impact of oper- ati978-90-481-4037-4978-94-017-0506-6Series ISSN 0924-5480 Series E-ISSN 1875-1334
26#
發(fā)表于 2025-3-26 03:17:41 | 只看該作者
Book 1989r understanding of the im- pact of the physical factors that both enhance and inhibit forestry activities. Part I is analytic, written as a basic text for undergradu- ates in courses such as logging, transport, forest engineer- ing and even forest management. It deals with the fundamen- tals of tech
27#
發(fā)表于 2025-3-26 06:05:56 | 只看該作者
0924-5480 ith a clear understanding of the im- pact of the physical factors that both enhance and inhibit forestry activities. Part I is analytic, written as a basic text for undergradu- ates in courses such as logging, transport, forest engineer- ing and even forest management. It deals with the fundamen- ta
28#
發(fā)表于 2025-3-26 11:10:57 | 只看該作者
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發(fā)表于 2025-3-26 13:04:29 | 只看該作者
Forest Mechanization,’s. It was the American Civil War which ultimately provided the impetus for change from manual labour to mechanical power in agriculture in the United States and it was World War II which provided the impetus in the mechanization of logging in North America and northern Europe.
30#
發(fā)表于 2025-3-26 18:33:36 | 只看該作者
Forest Roads in a Staggered Ownership Setting,ers of the holdings using or benefitting from the roads. Many times these owners may reach a voluntary agreement on the road matters but generally there are conflicting views on the needs for roads and how costs shall be shared. Then outside expertise is needed to resolve the issue, e.g. the local forest administration.
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