| 毛乌素沙地新疆杨种群的点格局分析 |
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| 引用本文： | 赵哲光,高甲荣,崔强.毛乌素沙地新疆杨种群的点格局分析[J].安徽农业科学,2011,39(5):2772-2775. |
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| 作者姓名： | 赵哲光 高甲荣 崔强 |
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| 作者单位： | 北京林业大学水土保持学院,教育部水土保持与荒漠化防治重点实验室,北京,100083 |
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| 基金项目： | 国际科技合作项目(2008DFA32270) |
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| 摘 要： | 根据宁夏毛乌素沙地2块20 m×20 m的新疆杨样地实地调查结果,采用点格局分析方法对毛乌素沙地的新疆杨种群的空间分布格局和空间关联性进行了研究。结果表明,在较小空间尺度（0~3 m）上,新疆杨种群的空间分布表现为显著的非随机分布;当空间尺度大于临界值（9 m）时,新疆杨种群的空间分布呈现随机分布趋势;不同大小等级的新疆杨在空间关联性上表现为负相关。
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| 关 键 词： | 新疆杨 点格局分析 分布格局 空间关联 |
Point Pattern Analysis of Populus bolleana Population in Mu Us Sandy Land |
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| ZHAO Zhe-guang et al.Point Pattern Analysis of Populus bolleana Population in Mu Us Sandy Land[J].Journal of Anhui Agricultural Sciences,2011,39(5):2772-2775. |
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| Authors: | ZHAO Zhe-guang |
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| Institution: | ZHAO Zhe-guang et al (College of Soil and Water Conservation,Beijing Forestry University,Key Laboratory of Soil & Water Conservation and Desertification Combating,Ministry of Education,Beijing 100083) |
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| Abstract: | According to the field investigation results from 2 Populus bolleana sample plots with the area of 20 m × 20 m in Ningxia Mu Us Sandy Land,and point pattern analysis was used to study the spatial distribution patterns and spatial association of Populus bolleana population in Mu Us Sandy Land.The results indicated that in smaller spatial scale(0-3 m),the spatial distribution of Populus bolleana population presented significant nonrandom distribution;when spatial scale was greater than critical value(9 m),the spatial distribution of Populus bolleana population presented random distribution trend;different size classes of Populus bolleana population in spatial association showed negative correlation. |
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| Keywords: | Populus bolleana Point pattern analysis Distribution pattern Spatial association |
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