lexicographer 发表于 2025-3-21 19:20:05

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步兵 发表于 2025-3-21 22:30:17

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不开心 发表于 2025-3-22 01:36:51

Control in Woodlands Operations,crease, the need for tighter controls on operations increases in direct proportion. Many operators are instinctively cost and production conscious, but many do not understand the value of control on their operations. The black book in the hip pocket type of control is a thing of the past and, if an

剧本 发表于 2025-3-22 07:43:23

Soil Compaction,forest soils are typically porous well-aggregated mixtures of mineral soil particles and organic material and it is this porous nature that makes the forest soil particularly susceptible to compaction by logging equipment. A single pass or very few passes will make the greatest impact on the bulk de

原始 发表于 2025-3-22 11:00:24

Early Thinnings,cing between the trees — up to a point — improves the quality of wood and gives, in thinnings, a wider choice in the selection of trees and species to survive for sustained growth. Also natural regeneration of trees may come into a plantation in which a prescribed spacing is observed. These factors

博识 发表于 2025-3-22 16:31:24

Harvesting Biomass for Fuel,development of new harvesting techniques, each adapted to the special type of biomass resource available as fuel in that particular situation. A wide range of different types of woody materials are now used for very different market outlets, resulting in a corresponding flora of machines, systems an

Intend 发表于 2025-3-22 18:18:32

Forest Roads in a Staggered Ownership Setting,ministrative tools to allow and promote the establishment and continuing maintenance of an adequate forest road network. In some countries, especially those with small forest areas intermixed with agricultural land, the state provides the roads, which then become part of the public road network. Pri

Comprise 发表于 2025-3-22 23:30:59

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斗争 发表于 2025-3-23 03:51:43

C. R. Silversides,U. Sundberga country parson, that he studied medicine at Heidelberg and subsequently served for several years as assistant to Helmholtz at that university, and that he was by profession a physiologist until, in his 40th or 41st year, he set about writing what Boring (1950) called “the most important book in th

AVOID 发表于 2025-3-23 09:24:07

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