【作者】 邓成；

【导师】 吕勇；

【作者基本信息】 中南林业科技大学 ， 森林经理学， 2009， 硕士

【摘要】 林分生长和收获模型是客观的预估林分的生长、收获的重要手段,是森林经营工作者经营森林的指南。但模型种类繁多,形式多样,不同的模型所模拟的同一因子却可能不一致,这为生长收获模型在实际生产中的应用带来了很大的困难。因此,研究林分生长和收获模型整体化有助于系统的了解单木、林分的自然生长规律和了解各种生长收获模型之间的区别与联系,对于解决不同水平模型之间的相容性与一致性问题具有重要意义,并有助于提高模型的生物学意义,使各模型具有更好的可解释性和更普遍的适用性,从而能更好地将各种生长收获模型的理论研究与实际生产结合起来,指导林业生产。通过分析林分生长和收获模型整体化的概念和内涵,提出了林分生长和收获模型整体化的思路。并以马尾松人工林为对象,对其样地调查数据,以EXCEL和SPSS软件为计算分析平台,运用森林测计学的相关原理,进行了各类模型整体化的研究。研究内容主要包括4个部分：单木各因子(直径D、树高H、断面积G、材积V等)生长和收获模型之间的耦合；单木因子生长和收获模型与林分因子(平均直径Dg、平均高H、断面积G0、蓄积M等)生长和收获模型之间的耦合；林分各因子生长和收获模型之间的耦合；林分生长模型与林分径阶分布模型之间的耦合。通过研究实现了各类模型的整体化,并得到了一系列整体化的林分生长和收获模型。这些模型中都包含了与林分生长最为密切的地位指数、林分密度、林分年龄等因子,具有更好的生物学意义和可解释性。而且这些模型是广义的林分生长和收获预估模型,对不同的地域和不同的树种,只要采集其相应的样本数据,就可建立和推导出适合该地区、该树种的一系列整体化的林分生长和收获预估模型,另外,这些模型还能同时预估现实林分和未来林分的各个因子,具有更为广泛的适用性。通过对这些模型进行适用性检验和精度计算,可知这些整体化的林分生长和收获模型具有很好的适用性和很高的预估精度。更多还原

【Abstract】 Stand growth and yield models is an important means to forecast stand’s growth and harvest objectively,is the guidelines for forest workers to manage forest.However, the models is various,and different models to simulate the same factor may be inconsistent.It bring difficulties to apply models to Production.So,research Stand growth and yiele models’ integration is help to know the self-sow rule of individual-tree and stand systemicly and the distinction and contact among different models. It is significant to resolving the compatibility、consistency and internal structure unity between different levels models.and it is help to enhance the biology significance,make the models have better explanation and broader applicability, Thus,can combine the theoretical research of various models and actual production better.By analyzing the concept and Meaning of models’integration, propose a thought of models’coupling.use the EXCEL and SPSS software as the analysis and computing platform, use the forest mensuration principles research the various models’ coupling. Research includes 4 parts:the Coupling of individual tree factor(diameter D, tree height H, basal area G, Volume V, etc.) growth and yield models; the coupling among individual tree growth and yield models with stand growth and yield models; (average Diameter Dg, average high H, basal area Go, volume M); the coupling among stand growth and yield models; the coupling among Stand growth and yield models and stand diameter class distribution models.By studying, realize the various models’coupling, and get a series coupled stand growth and yield models. These models include the index, stand density, stand age, and other factors that have affinity with stand growth, have better biology significanceand explanation. These models are broad sense growth and yield models.to Different geographical and tree species, as long as the plots data collected, the appropriate growth and yield models can be establish. In addition, the models can forecast the reality and future stand, have broader applicability. By testing the applicability and calculate the accuracy of these models, we can see these models have very good applicability and high forecast accuracy. It shows that this study’s methods and ideas are reasonable and feasible.更多还原