石河子东大塘天山云杉种群结构特征研究

为了阐明东大塘风景区天山云杉（Picea schrenkiana）的种群结构和未来发展趋势,合理保护现有资源,在东大塘风景区选取了20个样地（10m×10m）,对该地区天山云杉种群的年龄结构、高度结构、径级结构、静态生命表和存活曲线进行了分析。种群年龄结构分析表明,种群个体数量主要集中于Ⅱ、Ⅲ、Ⅳ龄级（个体数量比重占86.05%）,幼苗、老龄个体数量较少。种群径级结构表明,种群的优势径级在6-22 cm,其个体数占总数的89.46%。种群的高度结构表明,种群高度基本呈正态分布。静态生命表分析表明,种群天山云杉的Ⅰ、Ⅱ龄级的死亡率为负,种群Ⅳ、Ⅴ龄级的死亡率最高,累计达80.1%。以标准化最高存活量为起点天山云杉的存活率基本符合属于DeeveyⅢ型。

Population Structure Characteristic of Picea schrenkiana in Dongdatang Shihezi

For the population structure and future development trend expounding big east pond scenic spots Picea schrenkiana, protect now available resource rationally, the scenic spot has chosen distance of 20 appearance in Dongdatang （ 10m x 10m） ,level structure, static state life form and survival curve have carried out analysis on appearance field inner Picea sehrenkiana population age structure, altitude structure, footpath. Indicate population age structure analys, population individual quantity focuses on age- class II,III,IV （individual quantity specific gravity accounts for 86.05% ） mainly,the child, old age individual quantity are less. Structure indicates population footpath level,group of advantage footpath level is in 6 -22cm ,whose individual number accounts for 89. 46% of sum,alley level individual few. Structure indicates the population alti, population assumes highly basically being scattering very much. Form analysis indicates static state life, population Picea schrenkiana age - class death rate is to be defeated, population IV, Vage - class death rate maximal, amounts to 80. 1% in accumulative total. The spruce survival rate conforms to Picea schrenkiana basically belong to the Deevey III type.