By means of the colliding-centre principle,the impulse load,which appear:at thehydraulic arm of the chopping and logging machine when the tree is cut down,can be reduced tozero theoretically.
利用撞击中心原理，理论上可将树木在被放倒过程中对采伐集材机液压手臂产生的冲击载荷降低为零，该文分析了利用上述采伐方法时采伐集材机所承受的动载荷的特点，并为生产中正确使用此法提出了建议。
tractor for afforestation and timber-log collection
林用采伐集材拖拉机
Some Thoughts on Reform of Plantation Cutting Management according to Area Quota in Southern Collective Forest Area;
南方集体林区人工用材林按面积限额进行采伐管理的改革探索
Application of Calculating System of Timber Forest Logging
用材林森林采伐量测算系统应用分析
For mature timber stands, the approaches of selection cutting, clear cutting and shelterwood cutting
成熟的用材林应当根据不同情况,分别采取择伐、皆伐和渐伐方式,
3) The woodland use right for the cutting blanks and the burns of timber stands, economic forests and firewood forests;
（三）用材林、经济林、薪炭林的采伐迹地、火烧迹地的林地使用权；
" Rims for tractors, agricultural and forestry machines"
GB/T3373-1982拖拉机和农业、林业机械用轮辋
Logging and Utilization Commercial Plantation Based on Dematerialization Principles of Industrial Ecology
基于物质减量化原则的人工用材林采伐利用
Effect of Harvest and Land Uses on Soil Labile Organic Carbon in Natural Second Growth of Northeast China
采伐及伐后土地利用对东北温带次生林土壤活性有机碳的影响
" Rims series for tractors, agricultural and forestry machines"
GB/T3372-1989拖拉机和农业、林业机械用轮辋系列
Approaching Bringing the Function and Efficiency of the Skidding Machine into Full Play in the Mountain Cutting Area
发挥集材机械在山地伐区的作用与效率探讨
General specifications for forestry wheeled and tracklaying tractors
GB/T15832-1995林业轮式和履带拖拉机通用技术条件
The cutting of bamboo groves that are mainly aimed at bamboo wood shall be governed by the stipulations of the above articles.
采伐以生产竹材为主要目的的竹林，适用以上各款规定。
Study on the Comprehensive Decision of Yielding Age of Short Rotation Timber Plantation
短周期人工用材林合理采伐年龄综合决策的研究
Clearing of Pinus kesiya var.langbianensis Cut-over Area and Logging Residue Utilization
思茅松林采伐迹地清理及其采伐剩余物的利用
Cutting to go up slashly afforestation; Should notice to clear the branch advantageous position that after cutting, leaves and leaf, usable machinery turns over agrarian or incendiary burn to burn.
在采伐迹地上造林；要注重清理采伐后留下的枝权和树叶，可用机械翻耕或放火燎烧。
Chapter Five Forest Cutting
第五章 森林采伐
Article 29 In compliance with the principle that the consumption of timber shall be lower than the growth, the State shall impose strict controls over the annual forest cutting volume.
第二十九条 国家根据用材林的消耗量低于生长量的原则，严格控制森林年采伐量。
In compliance with the principle that the consumption of timber shall be lower than the growth, the State shall impose strict controls over the annual forest cutting volume.
国家根据用材林的消耗量低于生长量的原则,严格控制森林年采伐量