小兴安岭阔叶次生林典型树种单木生长模型的建立

Establishment of Growth Model of Individual Typical Tree Species of Broad-leaved Secondary Forest in Lesser Khingan Mountains

以小兴安岭过伐林区阔叶次生林典型类型(杨桦林、硬阔林)为研究对象,通过建立阔叶次生林典型类型(柞树、白桦、黑桦)的单木生长模型,对小兴安岭过伐林区阔叶次生林主要树种的生长进行预测,直接判定各单木树种的生长状况。研究结果表明,林木直径是影响阔叶次生林主要树种单木生长量的最主要因素,直径越大,定期直径生长量也越大;林木直径是影响林木枯损的主要因子,林木直径越大,枯损概率越小。

This paper studied the typical tree species （poplar and birch forest, hardwood broadleaved forest） of broad-leaved secondary forest in Lesser Khingan Mountains, and established the growth model of the individual （Quercus mongolica, Betula platyphylla, Betula dahurica） to predict the growth of main tree species of broad-leaved secondary forest in Lesser Khingan Mountains and determine the growth con- ditions of individual tree directly. The results showed that the factor affecting the increment and mortality of the individual was tree diameter, which specifically reflected that the increment increased but the mortality decreased as the tree diameter increased.