| 镶黄旗黄花山天然杜松林群落结构与种群分布格局研究 |
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| 引用本文： | 康霞,姚云峰,李钢铁,任丽娟.镶黄旗黄花山天然杜松林群落结构与种群分布格局研究[J].林业资源管理,2012(2):47-53. |
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| 作者姓名： | 康霞 姚云峰 李钢铁 任丽娟 |
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| 作者单位： | 内蒙古农业大学生态环境学院,呼和浩特,010019 |
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| 摘 要： | 在内蒙古自治区锡林郭勒盟镶黄旗黄花山天然杜松林内,设置4个有代表性的标准样地,应用相邻格子法获得野外调查数据,分析天然杜松林群落结构及乔木层和灌木层优势种种群空间分布格局。结果表明:1)天然杜松林群落内,杜松地径较小,个体高峰值分布范围较为集中,径级结构变化明显;旱榆多以幼苗的形式存在,地径范围在2.5cm以下。群落存在明显的径阶缺陷,属于不稳定型。2)乔木层高度级较低,而灌木层高度级较好。3)乔木层杜松种群主要以聚集分布格局为主,伴有均匀分布格局,旱榆种群则为聚集分布格局;灌木层优势种群小叶鼠李和土庄绣线菊的空间分布格局都为聚集分布。群落处于不稳定的恢复发展阶段,人为和自然干扰以及种群生物学特性共同造成这种空间分布格局。
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| 关 键 词： | 黄花山 天然杜松林 种群结构 分布格局 |
Research on Community Structure and Patterns of Population Distribution of Natural Juniper Forest in the Huanghua Mountains of Xianghuang Banner |
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| KANG Xia
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YAO Yunfeng
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LI Gangtie
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REN Lijuan.Research on Community Structure and Patterns of Population Distribution of Natural Juniper Forest in the Huanghua Mountains of Xianghuang Banner[J].Forest Resources Management,2012(2):47-53. |
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| Authors: | KANG Xia YAO Yunfeng LI Gangtie REN Lijuan |
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| Institution: | (College of Ecology and Environmental Science,Inner Mongolia Agricultural University,Huhhot 010019,Inner Mongolia,China) |
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| Abstract: | Four typical standard sample plots were set in natural juniper forest in the Huanghua Mountains in Xianghuang Banner of Xilin Gol League in Inner Mongolia Autonomous Region in order to obtain field survey data with the adjacent grid method.The main objective was to study community structure and tree layer and shrub layer dominant population spatial distribution patterns.The results showed that:(1)The ground diameter of juniper was smaller and the individual peak distribution was more concentrated in natural juniper forest,so there was significant structural change in diameter class.Because there were obvious defects in diameter class,the community was unstable.(2)Height class of tree communities was in lower level,while height class of shrub communities was better in natural juniper forest.(3)The distribution patterns of juniper populations was mainly aggregated distribution with uniform distribution pattern,while glaucescent elm population was aggregated distribution pattern in natural juniper forest.The dominant rhamnus parvifolia bunge population and dominant pubescent spiraea population are aggregated distribution pattern in shrub layer.The community was in an unstable stage of recovery development.Human and natural disturbances and the biological characteristics of populations contributed to the contagious distribution. |
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| Keywords: | The Huanghua Mountains natural juniper forest community structure distribution patterns |
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