| 兴安落叶松鞘蛾第四龄幼虫和蛹的空间分布 |
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| 引用本文： | 杨立铭,秦加强,孙维林,郑立军. 兴安落叶松鞘蛾第四龄幼虫和蛹的空间分布[J]. 东北林业大学学报, 1989, 0(5) |
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| 作者姓名： | 杨立铭 秦加强 孙维林 郑立军 |
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| 作者单位： | 东北林业大学(杨立铭，孙维林)，黑龙江省海林林业局(秦加强)，黑龙江省伊春林校(郑立军) |
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| 摘 要： | 1987年春天,于东北林业大学哈尔滨实验林场、海林林业局三部落经营所、海林县杨子荣烈士陵园及海林县海南林场,共选五块标准地,各抽样调查了30株标准树,每一标准树取4个样枝,以样枝上的叶丛为调查样方,实测样方上的虫数和频次。用分布型频次法和指数法检验结果表明,兴安落叶松鞘蛾第四龄幼虫和蛹属负二项分布和聚集分布。
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| 关 键 词： | 兴安落叶松鞘蛾 第四龄幼虫 蛹 空间分布 |
SPATIAL DISTRIBUTION PATTERNS OF LARVAE AND PUPAE OF THE LARCH CASEBEARER IN CHIHA |
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| Yang Liming. SPATIAL DISTRIBUTION PATTERNS OF LARVAE AND PUPAE OF THE LARCH CASEBEARER IN CHIHA[J]. Journal of Northeast Forestry University, 1989, 0(5) |
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| Authors: | Yang Liming |
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| Abstract: | In the spring of 1987, five sample plots were established in pure stands of larch in Harbin and Hailin Forestry Bureau. Thirty sample trees were sampled in each plot. Four branches in each sample tree were sampled and the larvae or pupae on the leaves of branches were calculated. Spatial distribution patterns of the fourth instar larvae and pupae of the casebearer(G. dahurica Flkv.)in China were measured by means of several indices. The results showed that their distribution patterns belong to aggregated distribution and negative binomial distribution. |
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| Keywords: | Larch casebearer Fourth instar larvae Spatial distribution |
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