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2003—2007年,采用样方法和定位观察法测量了卧龙自然保护区拐棍竹无性系种群密度、地径和高度,研究野化培训大熊猫采食和人为砍伐对拐棍竹无性系种群更新的影响;并用Weibull概率密度分布函数的尺度和形状参数比较分析了不同处理方式(大熊猫采食、人为砍伐和对照)对拐棍竹无性系种群结构(年龄、径级和高度级)的影响.结果表明:在相同种群数量和环境条件的基础上,大熊猫采食和人为砍伐有利于拐棍竹的无性系更新,经过3年多的自然恢复,竹子的种群密度趋于一致,并达到较稳定的状态.大熊猫采食样方的拐棍竹径级和高度级分布曲线、尺度参数和形状参数与对照样方无明显差异;而人为砍伐样方的分布曲线大多呈倒“J”型,且尺度参数和形状参数均明显小于大熊猫采食和对照样方,当年生竹笋和多年生竹的生长质量远不及大熊猫采食影响下的竹子种群,难以达到大熊猫取食的选择标准.
From 2003 to 2007, the population density, diameter and height of bamboo clonal walking sticks in Wolong Nature Reserve were measured by the method of sampling and location observation to study the effects of wild-type training giant panda feeding and man-made cutting on the regeneration of bamboo clonal leaves The effects of different treatments (Giant Panda feed, man-made felling and control) on the population structure (age, diameter and height) of the bamboo clonal population were compared using the scale and shape parameters of the Weibull probability density distribution function. The results showed that On the basis of the same population quantity and environmental conditions, Giant Panda feed intake and man-made felling are favorable for the clonal regeneration of bamboo sticks. After more than three years of natural recovery, the population density of bamboo trees became more consistent and reached a stable state The bamboo diameter and height distribution curve of the walking sticks of giant panda feeding quadrats had no significant difference with the control quadrats, while the distribution curves of the artificial quadrats were mostly inverted J Scale parameters and shape parameters were significantly less than the giant panda feed and control sample side, when the growth of bamboo shoots and perennial bamboo quality is far below the giant panda feeding under the impact of bamboo populations, difficult To reach the selection criteria giant panda herbivory.