龙王山区落叶阔叶林林分结构特征研究

Research on Structural Characteristic of deciduous broad-leaved forest in Longwang Mountain

为全面掌握龙王山自然保护区落叶阔叶林的林分结构特征,设置了3个100m×100m样地,对其中的6个30m×30m样方,进行群落和林分调查。经统计分析,结果表明龙王山落叶阔叶林中树种种类多,优势树种为小叶白辛树和锐齿槲栎,林分树种组成具有一定的复杂性和多样性。林分株数密度平均为1511株/hm2,林分样地间差异不明显。胸径分布呈典型的倒"J"型;树高主要集中在4-9m的树高级,分布则呈偏左的正态分布。林分结构总体上具有多树种复层异龄的基本特征,具有良好的生物多样性保护和植物种质资源保存作用。

To realize the structure characteristic of deciduous broad-leaved forest well,3 sample plots of 100m×100m were set in Longwang Mountain Natural Reserve and 6 sample plots of 30m×30m were surveyed. The structure rules mainly include tree species、density、DBH and height were studied, and made fitting of the structure by the application of Weibull distribution function. The research shows that the deciduous broad-leaved forest in this area had rich plant species. The composition of tree species was complicated and diversified and the dominant tree species were Pterostyrax corymbosus and Querus aliena var. acuteserrata. The distribution of trees were relatively balanced ,and the region differences of the deciduous broad-leaved forest were small,with the stand density averaging 1511 strain/hm2.The DBH distribution presented a typical type of “J”. And the tree height distribution was a left normal distribution,which concentrated in 4-9m. Generally,stand structure had the basic characteristics of multi-species and uneven aged,which possessed the biodiversity conservation and plant species resources.