林木生长和收获预估模型的研究动态

从近年来林木生长和收获模型的研究中，可以看出有如下的发展动向:（1）由林分水平模型向径级水平模型、单木水平模型转变；（2）从林木的自然生长模型发展来考虑人为育林措施的经营模型；（3）由简单的人工同龄纯林模型深化到复杂的天然异龄混交林；（4）关注点从测树学调查因子的经验性模型转向生理生态的机理性模型。还就今后我国的林木生长模型研究提出了几点建议。

Research Trends in Trees Growth and Yield Prediction Models

In order to realize forest resource data updating, evaluation of silvicultural treatment, and harvest scheduling, trees growth may be forecasted and predicted by trees growth and yield models. In terms of studies on trees growth and yield models in recent years, some new trends are as following: 1)from whole stand model to size class model and individual tree model; 2)from natural growth model to silvicultural model which involves artificial practice; 3)from simple model for even-aged pure plantation to complex model for natural uneven-aged mixed stand; 4)from empirical model for forest measurement factor to mechanistic model concerning ecophysiological process. Several suggestions are proposed to improve Chinese studies on trees growth models.