| 赤松毛虫幼虫空间分布型的研究 |
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| 引用本文： | 夏乃斌 屠泉洪等. 赤松毛虫幼虫空间分布型的研究[J]. 北京林业大学学报, 1987, 9(3): 223-231 |
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| 作者姓名： | 夏乃斌 屠泉洪等 |
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| 作者单位： | 北京林业大学林业系(夏乃斌)，北京林业大学基础部(屠泉洪)，北京林业大学林业系(马占山) |
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| 摘 要： | 通过频次分布X~2检验和七种分布型指数的测定,赤松毛虫幼虫的空间分布型为一般负二项分布,空间分布的基本成份是疏松的个体群,个体群的分布为聚集分布;个体群内的分布为随机分布;个体群的平均大小约为70个个体。
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| 关 键 词： | 赤松毛虫 空间分布型 频次分布卡方(X~2)检验 分布型指数 |
STUDIES ON THE SPATIAL DISTRIBUTION PATTERNS OF DENDROLIMUS SPECTABILIS LARVAE |
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| Xia Naibin Ma Zhanshan Tu Quanhong. STUDIES ON THE SPATIAL DISTRIBUTION PATTERNS OF DENDROLIMUS SPECTABILIS LARVAE[J]. Journal of Beijing Forestry University, 1987, 9(3): 223-231 |
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| Authors: | Xia Naibin Ma Zhanshan Tu Quanhong |
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| Affiliation: | Xia Naibin Ma Zhanshan Tu Quanhong(Forestry Department) (Department of Fundamental Courses) |
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| Abstract: | Spatial distribution patterns of pine lappet caterpillar (Dend-rqlimus spectabilis Butler) were measured by Chi-square test of frequency distribution and seven indices of distribution pattern. The results show the followihg aspects: 1) Spatial distribution pattern of pine lappet caterpillar, obeys the common negative binomial distribution, the basic component of spatial distribution pattern is loose colony and the distribution of colony also is aggregative. (2) The intra-colony distribution is random. (3) The mean size of colony is two Chinese pines and equal to about seventy individuals.(4) After transformation with Iwao's method, the seven groups data of eight groups obey normal distribution, addivity of effect and homogeneity of variance, before transformation, the eight groups data are all non-normal distribution, non-additivity and heterogeneity of variance. (5) The aggregative distribution is caused by biological characteristics feeding behavior of pine lappet caterpillar. |
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| Keywords: | pine lappet caterpillar spatial distribution pattern Chi-square test of frequency distribution indices of distribution pattern |
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