黑龙江省中部山区山杨阔叶混交林林分特征分析

Characteristics of Stands of Populus davidii Broad-leaved Mixed Forest in Central Heilongjiang Province

在黑龙江省中部山区山杨阔叶混交林内设立样地2个,经调查对林分的树种组成和直径分布进行了分析研究,结果表明:山杨阔叶混交林组成树种为13～14种,山杨占有绝对的优势,为主要树种,其次是榆树、椴树、核桃楸和色木槭。林分直径分布呈多峰山状分布或呈近似的反"J"形分布。

Two survey plots were established in the mixed forest of Populus euphratica in central Heilongjiang Province.The tree species composition&diameter distribution of the stand were analyzed.Result shows that the number of tree species in the mixed forest of Populus euphratica are 13-14 species.Populus davidii has an absolute advantage,mainly composed of tree species,followed by Ulmus pumila,Tilia tuan,Juglans regia&Acer mono,which are associated tree species.The diameter distribution of the stand is multi-peak mountain-like distribution or has an approximate anti-J shape.