同龄林

目标规划在同龄林收获调整中的应用

An Application of Goal Programming on Even-aged Forest Harvesting Regulation

同龄林收获调整的最优控制问题探讨

Studies on the Problem of Optimal Control Theory in Evenaged Forest Harvesting Regulation

同龄林多经营类型联合优化调整模型及其应用

Application of combined optimizing model to multi working group of even aged forest

同龄林理想森林结构的探讨

Probing into optimal forest structure of Evenaged stands

同龄林直径变动系数动态变化规律的初步研究

A Preliminary Study on Dynamic Laws in Coefficient Variation of the Tree Diameter Even aged stands

天然同龄林的林龄转移滞后现象及林龄公式的修正

The Phenomenon of Forest Age Retardation and the Amending of Forest Age Formulas for Natural Even-aged Forest

因此，进行年龄结构调整优化时，应逐步减少同龄林面积的比重，逐步扩大异龄林面积的比重。

When optimization age structure of forest , there should be a gradual reduction in the proportion of the same age forest , and gradually expand the uneven-aged forest .

威布尔（Weibull）分布在同龄纯林的直径分布中已得到广泛的应用，但是在复层混交异龄林中应用的研究报道甚少。

The Weibull Distribution has been widely applied in diameter distribution of pure forest , but very few studies have been reported in mui layer forest with different ages .

应用-3/2法则及广义Schumacher生长方程导出同龄纯林自然稀疏过程中密度随时间变化规律新模型，采用遗传算法对非线性模型参数进行最优估计。

Based on the famous-3 / 2 power rule and generalized Schumacher growth equation , a mathematical model for the density change of even-aged pure stands with time during self-thinning process was presented , and the genetic algorithms was used to fit this nonlinear model .

同龄纯林自稀疏方程验证

Testing for self - thinning equation of even aged pure stands

同龄纯林的林龄分布结构变化方程

A Dynamics Equation of Age-Area Structure for Evenaged Pure Forest

同龄纯林密度效应新模型的研究

The Study On The New Model Of Even-Aged Pure Forest Density Effect

一类同龄纯林系统的稳定性

Stability of Age - area Structured Evenaged Pure Forest Systems

人工同龄纯林理论郁闭度测定计算的研究

Measurement and calculation of theoretical canopy density of pure artificial even aged stand

同龄纯林立木增长模型的研究

Study of Biomass Growth Model of Uniform Pure Forest

本文提出同龄纯林自（然）稀硫的理论方程式。

A theoretical equation discribing the self-thinning laws for even-aged pure stands is derived .

直径结构呈单峰正态分布，符合典型的同龄纯林的直径结构分布特点。

Diameter structure is the single-peak gaussian distributions , typical of pure forest distribution of the diameter of the structure .

结果表明，所提出的同龄纯林自疏规律模型能很好地拟合实际观测资料，具有良好的使用价值；

The results showed that the new model could fit observed data very well , and was very useful in practice .

马尾松人工同龄纯林株数累积分布数学模型研究不同林龄巨桉人工林地土壤理化性质动态研究

Study on trees accumulating distribution maths models of Masson Pine even-aged and pure plantation stand Soil Properties of E.grandis with a Range of Forest Ages

经研究证明，威布尔分布不但适用于同龄纯林直径分布，而且亦适用于复层异龄林直径分布。

The result showed that the Welbull Distribution was not only suited to diameter distribution of the even-aged pure forest , but also to the multi .

但是，云南松林中80%为同龄纯林，组成简单、生物多样性低，林分稳定性较差，林木分化严重、密度不合理，不能充分利用林地生产力。

But 80 % yunnan pine forests are pure forests with same age , its structure is simple and biodiversity is low , its stability is not good , its differentiation is serious and its density is irrational , so the forest land productivity cannot be used fully .