小兴安岭阔叶次生林典型树种单木生长模型的建立

摘要

This paper studied the typical tree species ( poplar and birch forest , hardwood broadleaved for-est) 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 mor-tality decreased as the tree diameter increased .%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.