| 浑善达克沙地不同密度榆树种群空间格局 |
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| 引用本文： | 李钢铁,王永胜,余新晓,李清雪,岳永杰.浑善达克沙地不同密度榆树种群空间格局[J].干旱区资源与环境,2011(3):141-145. |
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| 作者姓名： | 李钢铁 王永胜 余新晓 李清雪 岳永杰 |
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| 作者单位： | 北京林业大学;内蒙古农业大学; |
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| 基金项目： | 国家林业局948项目2007-4-13; 十一五科技支撑项目2006BAD26B05; 国家自然基金项目30860234资助 |
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| 摘 要： | 采用点格局分析方法对浑善达克沙地南缘不同密度下天然榆树种群的空间分布格局进行了研究,研究结果表明:1)榆树的生长指标随密度的增加有减小的趋势,当密度大于27株/hm2时天然榆树的各项生长指标趋于稳定;2)浑善达克沙地天然榆树种群空间分布格局在低密度下和中密度下随尺度的变化不大,在所有尺度下主要趋于集群分布,个别样方(样...
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| 关 键 词： | 浑善达克沙地 榆树 种群空间结构 点格局分析 |
Spatial patterns of elm density in Otingdag Sandy Land |
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| LI Gangtie,WANG Yongsheng,YU Xinxiao,LI Qingxue,YUE Yongjie.Spatial patterns of elm density in Otingdag Sandy Land[J].Journal of Arid Land Resources and Environment,2011(3):141-145. |
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| Authors: | LI Gangtie WANG Yongsheng YU Xinxiao LI Qingxue YUE Yongjie |
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| Institution: | LI Gangtie1,2,WANG Yongsheng2,YU Xinxiao1,LI Qingxue2,YUE Yongjie2(1.College of Sand Water Conservation.Beijing Forestry University,Beijing 100083,P.R.China,2.Inner Mongolia Agricultural University,Huhhot 010019,P.R.China) |
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| Abstract: | We studied the spatial distribution pattern of elm population at southern edge of the Otindag Sandy Land by the method of point pattern analysis.The results show that:(1)The growth index of elm decreases with the increase of the density,and when the density of elm population is more than 27 per hectare the growth index of natural elm does not change significantly;(2)The spatial distribution pattern does not change significantly with scale when the elm population under the low-density and under the mid-densi... |
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| Keywords: | Otindag Sandy Land elm population spatial structure point pattern analysis |
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