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.
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。
In this paper, we studied the dynamic change rules of chemical composition and the growth phase of ramie.
本文研究了四季苎麻的化学成分随生长期变化情况。
An analysis and study on the characteristics of cultivated land dynamic change is very important in protection, growth and utilization of cultivated land.
耕地动态变化特征的分析研究。对耕地的保护，整理和开发利用均具有极其重要的意义。
The results indicates: 1) In contrast to population size, the change of consumption patterns caused by growth of income level has a more direct effect on the dynamic change of marine fisheries;
实证研究表明：①由收入水平提高所引起的消费方式转换比人口规模更直接地影响海洋渔业资源的动态变化；
The results indicates: 1) In contrast to population size, the change of consumption patterns caused by growth of income level has a more direct effect on the dynamic change of marine fisheries;
实证研究表明：①由收入水平提高所引起的消费方式转换比人口规模更直接地影响海洋渔业资源的动态变化；
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