以潜能函数建立单木生长模型

CONSTRUCT INDIVIDUAL TREE GROWTH MODELBASED ON POTENTIAL FUNCTION

利用内蒙古大兴安岭地区的样地和解析木资料。建立兴安落叶松[Larix gmelinii(Rupr.)Rupr.]天然林单木与距离无关的生长模型。在讨论模拟单木生长方法的基础上,将树木生长潜能函数由优势木高生长扩展到疏开木胸径生长。并确定了疏开木的概念和选择条件。按树木生长和竞争关系,建立树木生长的修改函数。根据树木生长特点,探讨了修改函数的性质。建立的修改函数既是一种单木与距离无关的生长模型,也是一种单木与距离有关的生长模型。可作为模拟树木生长的一般方法。

Growth model, distance-independent individual tree growth model of old-growth Larch (Larix gmenilii Rupr.) was constructed with temporary plots and analysis trees collected in Great Xingan Mountain in Inner Monglia Autonomous Region. In this analysis methods simulating individual tree growth were discussed and tree growth potential function was extended from dominant tree height increment to open-grown tree DBH (Diameter at breast height) growth. Concept and rules for selecting opengrown tree were defined. Tree growth modification was constructed in according to relationship of tree to competition. The natural of modification function was discussed on the bases of tree growth characteristic and modification function of old-growth Larch growth was constructed. The modification function constructed by this method is one of the distance-independent individual model, which is one of the distance-dependent individual model, too, which is generalized as a method simulating tree growth.