1) forest road network
林道网
1.
Quantitative researches on the effects of mountain forest road network on the environment in forest land were ignored in past.
山地林道网对林地环境影响的定量研究是一个重要的却一直未被重视的领域。
2.
The paper summarized the creation and development of forest road network theory and typical theoretical models for calculating optimum density A brief review on the research of forest road network in China was taken Main issues in the research field in future were propose
对林道网理论的产生、发展以及各具代表性的理论密度模型进行了综述 。
3.
The paper developed the decision model for the optimum years of maintaining forest road network based on the analysis of all costs relative to the years.
通过对各项与林道网养护年限有关费用的系统分析，建立了合理养护年限的决策模型。
2) mountain forest road network
山地林道网
3) spur-density
林道网密度
1.
Based on spur-density theory,Two conclusions can be drawn; (1)Two-side yarding is found increase the variable cost; (2)Under same circumstwnces the most economical spur-density is different for different yarding method.
本文应用林道网密度理论,通过对单面集材与双面集材的比较,得出:①以双面集材算得的最佳林道网密度,而实际上是单面集材时,使伐区可变成本增加6。
4) forest road net plan
林道网规划
1.
No careful evaluation, it is difficult to make scientific decision of forest road net plan.
林道网的评价是对原有路网进行技术改造和森林开发中进行休道网规划设计工作的重要组成部分,不经过认真的评价,就难以作出林道网规划方案的科学决策。
5) forest road net evaluation
林道网评价
6) forest area's road net
林区道路网络
补充资料：林下留别道友
【诗文】：
住亦无依去是闲，何心终恋此林间。片云孤鹤东西路，
四海九州多少山。静坐趁凉移树影，兴随题处著苔斑。
秋来洗浣行衣了，还尔邻僧旧竹关。
【注释】：
【出处】：
全唐诗：卷845-60
住亦无依去是闲，何心终恋此林间。片云孤鹤东西路，
四海九州多少山。静坐趁凉移树影，兴随题处著苔斑。
秋来洗浣行衣了，还尔邻僧旧竹关。
【注释】：
【出处】：
全唐诗：卷845-60
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条