目前的研究建立了识别工具，以进一步研究森林分化对这种疾病动态的影响。
The present work establishes the identification tools to move forward and ask how forest fragmentation affects such disease dynamics.
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.
通过本文的研究既检验了林窗动态模型又印证了林分密度效应理论。
This not only tested the forest dynamics model but also verified the theory of stand density effect.
作为应用实例，对一块小叶松林分直径结构的变化进行了动态模拟和预测。
As an example of the application, the changing structure of the diameter of an even-aged Jack pine stand is simulated and forecasted.
林木枝下高直接影响树木的生长和树干形状，建立林木枝下高动态模型可以了解林木或林分的生长规律。
Under branch height has direct impact on woods growth and trunks form, so dynamic model established with under branch height can reflect the growth of woods and stands.
同时模型根据土壤水贮量变化来模拟月森林水量平衡，它详细模拟了大气降水，地下水、人工灌溉、林分蒸腾量、渗透水量和土壤水之间的动态变化。
At the same time, in view of the change of soil water storage, it simulates dynamitic change among atmospheric rainfall, groundwater, irrigation, forest transpiration, deep drainage and soil water.
还建立了林分密度指数动态预估模型。
And also makes a structure of density of stocking index dynamic estimate model.
基于以上分析，用动态规划方法建立了可变间伐间隔期的林分经营密度模型。
This study on management density model of the mobile thinning interval overcomes the shortcoming of stationary interval which the former similar researches have, and it is convenient to practice.
文中简要概述了树轮分析在森林干扰、群落动态、森林结构、林分更新方式以及高山林线研究方面的进展。
This paper briefly outlined the advance of dendroecology research in terms of forest disturbance, population dynamics, forest structure, forest regeneration patterns and alpine timberline.
本文对集约经营与粗放经营杨树人工林分的叶面积垂直分布及其季节动态变化进行了对比研究。
The vertical distribution and seasonal change of leaf are a were studied in intensive and extensive culture poplar plantations.
不同林分的抗蚀指数与时间的动态模拟关系为二次幂函数曲线，相关系数0.9以上。
The analog equation between soil erosion resistance index and time is quadratic power function curve, whose correlation coefficient is above 0.9.
不同林分的抗蚀指数与时间的动态模拟关系为二次幂函数曲线，相关系数0.9以上。
The analog equation between soil erosion resistance index and time is quadratic power function curve, whose correlation coefficient is above 0.9.
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