林分生长规律的研究和建模。
立地分类与评价是保证林分生长良好保证。
Classification and evaluation of site condition is to promote forest stand growth well.
利用微观经济学手段，对林分生长过程进行了经济分析。
To make an economic analyse to stand growth course by microeconomic technique.
发现影响林分生长的主要因子是温度、降水量和土壤厚度。
It's found that the major factors affecting the forest growth are temperature, stand age, precipitation and soil depth.
在林分生长模型建立中，通过分析变量间的显著影响选择变量。
The variables in stand growth model were selected through analyzing the significant influences among the variables.
断面积生长预估是林分生长和收获预估体系中的核心因子和基础。
The basal growth prediction is a kernel factor and foundation in the model system of stand growth and yield prediction.
林分生长与林地土壤中全n、全k以及有机质等养分的含量显著相关。
It also shows that the growth of plantation is greatly affected by the content of soil nutrients specially total n, total K and soil organic matter.
依据历年调查资料，对麻池背油松天然林的林分生长结构进行了研究。
Based on survey resources in the past years, natural forest stand structure of Pinus tabulaeformis in Machibei was studied.
但蓄积量大幅下降，林分的龄组、密度结构严重失调，林分生长量偏低。
But stand volume descents to a great extent, age class and stand density structure are maladjusted badly, and the number of stand growth is low.
断面积生长间伐效应模型的研究是林分生长和收获预估模型体系研究摘要的核心内容。
Models on thinning effects on basal growth prediction are the kernel of the model system of stand growth and yield prediction.
同时，针对于加强项目林分的后期经营管理，对提高林分生长质量提出了具体的措施和建议。
Moreover, aiming at strengthening the future management of stand of project forest, concrete proposals and measures for improving quality of stand growth are also presented.
本文以保山市隆阳区杨柳彝族白族乡实地调查的91块云南松林样地数据研究了林分生长模型。
Stand growth model was studied based on 91 sample plots data collected in the Yangliu Township, Longyang District, Baoshan Prefecture.
根据对各等级的林分生长过程及其立地特征的分析，提出了划分马尾松低质低效林的技术参数标准。
Based on the analysis of the stands growth procedure and the site features, we provided the parameter criterion used to sort the low quality and low benefit Masson Pine secondary stand.
然而，经过一段时间后，间伐处理能够促进林分生长，从而提高了林分的稳定性和对强风的抵抗力。
However, thinning strategies could improve the stability by long-term effects on growth and development of trees against extreme wind.
结果表明：该竞争指标对杉木人工林适用，所建立的单木生长模型符合精度要求，可用于预估林分生长。
Result shows, This competition index is suitable to Chinese fir man-made forest, and individual tree growth model accords with the demands of accuracy, it can be used to estimate growth of stands.
通过大量的省级固定样地资料，对林分生长转移概率模型和进界生长模型进行了参数估计，并对模型进行了比较和修正。
With the data of permanent sample plots, the parameters of transition probability and ingrowth models were estimated, and some models were compared and partly modified.
结果表明，立地类型与林分生长关系十分密切，泥炭性风积沙土最适宜这3个树种生长，水化性风积沙土和不均一性风积沙土相对不利于这3个树种生长。
The results showed that the growth of stand is closely related with the site types. The sandy soil deposited by wind is most suitable for the growth of 3 species.
因此，在制定正确的森林经营决策之前，首先必须建立林分生长与收获模型，以掌握林分结构、生长动态、货币收获变化规律，并预测林分对即将实施措施的反应。
Thus, the growth and obtain models must be established before making the proper manage decision, the structure and grow dynamic and obtain change rule of the stand will be grasped by the models.
抚育间伐对森林生长的影响体现在很多方面，包括对林分生产力及其林分因子、林下植被及灌木、林下土壤和天然更新影响等方面。
The effects of thinning on forest growth embodied some aspects which mostly include the effects on stand productivity, stand factors, stand biomass, vegetation and shrubs under-forest, soil and so on.
抚育间伐对森林生长的影响体现在很多方面，包括对林分生产力及其林分因子、林下植被及灌木、林下土壤和天然更新影响等方面。
The effects of thinning on forest growth embodied some aspects which mostly include the effects on stand productivity, stand factors, stand biomass, vegetation and shrubs under-forest, soil and so on.
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