| 兴安落叶松鞘蛾幼虫空间分布型的研究 |
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| 引用本文： | 封万里,贾春生.兴安落叶松鞘蛾幼虫空间分布型的研究[J].吉林林业科技,2010,39(6):37-39. |
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| 作者姓名： | 封万里 贾春生 |
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| 作者单位： | [1]白山市林业局,吉林白山134300 [2]韶关学院英东生物工程学院,广东韶关512005 |
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| 摘 要： | 采用扩散型指数Iδ、聚集度指标I和CA、平均拥挤度与平均密度的比值(X*/)、Taylor的b指数、Iwao的X*—回归检验和聚集均数λ检验,探讨了兴安落叶松鞘蛾幼虫在落叶松纯林中的空间分布型。结果表明:兴安落叶松鞘蛾幼虫在林间树冠不同方位都呈聚集分布。造成聚集分布的原因是该虫本身的生活习性。
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| 关 键 词： | 兴安落叶松鞘蛾 落叶松 空间分布型 |
Research on spatial distribution of Coleophora dahurica larva |
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| FENG Wan-li,JIA Chun-sheng.Research on spatial distribution of Coleophora dahurica larva[J].Jilin Forestry Scicnce and Technology,2010,39(6):37-39. |
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| Authors: | FENG Wan-li JIA Chun-sheng |
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| Institution: | FENG Wan - li, JIA Chun - sheng (1. Forestry Bureau of Baishang City, Baishan 134300, China; 2. Yingdong bio- engineering Institute of Shaoguan Institute, Shaoguan 512005, China) |
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| Abstract: | Based on the diffusion Index Is, aggregation index I and CA, ration of average crowding degree to average density （X^＊/X^-）, Taylor＇ s b index, Iwao＇ s X^＊-X^-regression test and aggregation average λ test, the spatial distribution of Coleophora dahurica larva was determined in Larix pure trees. The results showed that the larva was aggregation distribution in different directions under canopy. The living behaviour of larva was the main reason for their aggregation distribution. |
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| Keywords: | Coleophora dahurica Larix spp spatial distribution |
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