| 植物种群分布格局的强度与纹理 |
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| 引用本文： | 杨持.植物种群分布格局的强度与纹理[J].内蒙古大学学报(自然科学版),1988(4). |
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| 作者姓名： | 杨持 |
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| 作者单位： | 内蒙古大学生物系 |
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| 摘 要： | 本文采用样线株间距测量法,对度量植物种群个体分布格局强度和纹理的数量指标进行了探讨。 D密/D疏和E(I)/E(C)是两种形式的相对密度差,比值直观的反映出分布格局强度的高、低。两种数量指标的结论基本一致。可以用E(C)与E(S)的秩次和作为度量分布格局纹理的数量指标。秩次和反映了聚块内个体间的离散程度以及诸聚块间的分散程度,表示出种群个体分布格局粗糙与细密的差别。
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| 关 键 词： | 种群分布格局 格局强度 格局纹理 相对密度差 |
The Distribution Pattern Intensity and Grain for Plant Populations |
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| Yang Chi.The Distribution Pattern Intensity and Grain for Plant Populations[J].Acta Scientiarum Naturalium Universitatis Neimongol,1988(4). |
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| Authors: | Yang Chi |
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| Institution: | Department of Biology |
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| Abstract: | This paper uses distance measurement between indivlduals along line transect. The quantitative indices have been investigated for pettern intensity and pattern grain. The D(close)/D(sparse) and the E(I)/E(C) are relative density difference. The ratio scale reflected height and low of the pattern intensity. The results for the two-type quantitative indices are baiscally coincident. The ordinal sum of E(C) and E(S) can be used as quantitative indices of measuring pattern grain, which summarized discveteness between individuals in clumps and separateness between clumps. |
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| Keywords: | Population distribution pattern Pattern intens ty Pattern grain Relative density difference |
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