【摘要】 利用生存分析理论,分析了山西霍山自然保护区核桃楸种群的径级结构以及树高与胸径的关系,绘制了静态生命表和存活曲线。结果表明,种群中龄个体数相对稳定,但幼龄个体数不足,更新和发展受到限制;对核桃楸种群胸径与树高进行研究拟合分析可知,直线拟合与对数拟合均能反映核桃楸种群胸径与树高的生长动态关系,但是对数拟合比直线拟合的相关系数大;生命表分析结果显示,核桃楸种群存活曲线呈DeeveyⅠ型,生存与发展面临较大压力。更多还原

【Abstract】 Using the plant survivorship theory, the size structure and the relationship between tree height and diameter(DBH)of Juglans mandshurica population in Huoshan Mountains nature reserve were analyzed, and the static life table was compiled and the survival curve was plotted. The results showed that the number of medium diameter individuals in the population was relatively stable, but seedlings were insufficient, renewal and development were limited. According to the fitting of DBH and tree height, both linear fitting and logarithmic fitting reflected the growth dynamic relationship between DBH and tree height, but the correlation coefficient of logarithmic fitting was larger than that of linear fitting. Life table analysis showed that Juglans mandshurica population survival curve was DeeveyⅠtype, and survival and development faced great pressure.更多还原