1) Mixed uneven-aged forest
混交异龄林
2) Different-aged compound storied forest
异龄复层混交林
3) coniferous and broad-leaved uneven-aged mixed forest
针阔异龄混交林
4) mixed forest of uneven-aned conifer and broad-leaved trees
针阔混交异龄林
5) Uneven Multi-Storied Mixed Forest Community
异龄复层混交林群落
6) uneven-aged forest
异龄林
1.
The confirmation method of mature level in uneven-aged forest is an insoluble problem both in forestry theory and forestry production at present.
以林木经济成熟径级确定为例,通过径级价值量被其径级材积除的模式转换办法,解析异龄林林木成熟的确定方法,进而为改善林业生产中异龄林采伐的盲目性提供依据。
2.
According to the statistical features of applied model of diameter distribution in forestry,suitable index distribution,Weibull distribution and β distribution have been chosen to simulate diameter distribution in the actual uneven-aged forests.
根据在林业中已应用的直径分布模型的统计特征,选择适宜于异龄林分直径分布模拟的指数分布、韦布尔分布、贝塔分布模拟现实异龄林分直径分布。
3.
The proportion of the national uneven-aged forests will increase under all these indemnificatory operation rules and measurements.
1998年国家实施天保工程之后,加强了对天然林的保护,南方非天保工程区域的天然阔叶林经营被强制要求采用择伐作业,这些保障性的经营规定和措施使我国的异龄林比重加大,对异龄林的经营管理提出了新的挑战。
补充资料：混交
两种或两种以上的树木混生在一起：带状～ㄧ松树和栎树～。
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