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林业科学 ›› 2014, Vol. 50 ›› Issue (10): 173-180.doi: 10.11707/j.1001-7488.20141024

• 研究简报 • 上一篇    下一篇

油茶幼林茶角胸叶甲成虫空间分布型及其环境解释

李密1,2, 周刚1,2, 何振1,2, 谭济才3, 刘跃进4, 伍义平5   

  1. 1. 湖南省林业科学院 长沙 410004;
    2. 国家林业局油茶研究开发中心 长沙 410004;
    3. 湖南农业大学植物保护学院 长沙 410128;
    4. 湖南省森林病虫害防治检疫总站 长沙 410007;
    5. 湖南省耒阳市林业局 耒阳 421800
  • 收稿日期:2013-08-12 修回日期:2014-01-10 出版日期:2014-10-25 发布日期:2014-11-12
  • 通讯作者: 谭济才
  • 基金资助:

    湖南省自然科学基金委员会与湖南省林业科学院联合基金项目(13JJ6089);湖南省林业厅科研项目"湖南省油茶有害生物专项调查";湖南省林业厅科技创新项目"茶角胸叶甲发生规律与无公害防治技术";湖南省科技重大专项(2013FJ1006)。

Spatial Distribution Patterns and the Environmental Interpretations of Basilepta melanopus (Coleoptera:Eumolpidae) adults in Camellia oleifera Young Forests

Li Mi1,2, Zhou Gang1,2, He Zhen1,2, Tan Jicai3, Liu Yuejin4, Wu Yiping5   

  1. 1. Hunan Forestry Academy Changsha 410004;
    2. Camellia oleifera Research and Development Center of State Forestry Administration Changsha 401004;
    3. College of Plant Protection of Hunan Agricultural University Changsha 410128;
    4. Hunan General Station of Forest Pest Management and Quarantine Changsha 410007;
    5. Leiyang Forestry Bureau, Hunan Province Leiyang 421800
  • Received:2013-08-12 Revised:2014-01-10 Online:2014-10-25 Published:2014-11-12

关键词: 油茶, 幼林, 茶角胸叶甲, 空间分布型, 环境因子

Abstract:

The spatial distribution patterns of Basilepta melanopus adults in Camellia oleifera (tea oil camellia) young forests of three different ages were studied using aggregation index examination and regression analysis. Correlation, multiple linear regression and path analyses were carried out on the relationships between eight environmental factors and the aggregation number of the leaf beetle on tea oil camellia. The eight environmental factors included slope (PD), slopes aspect (PX), slope position (PW), vegetation coverage (ZB), and host plant basal diameter (DJ), height (GD), crown width (GF), the distance from nearby old forests (YJ). Results indicated that the spatial distribution patterns of B. melanopus adults were aggregated in C. oleifera young forests of different ages, i.e., common negative binomial distribution in 1-year-old young forest and tended toward Neyman type A distribution in 3-year-old and 5-year-old young forests. In the young forests, the aggregation of the beetle was caused by environmental conditions. The results of multiple linear regression and path analyses showed that the number of environmental factors influencing distribution of the beetle populations tended to decrease with increasing age of young forest. The YJ and GF were the main environmental factors influencing the aggregation number of the beetle on tea oil camellia. With the increased age of young forest, influence and direct path coefficient of YJ gradually decreased, contrarily, GF become the leading factor in 5-year-old young forest. Migration and dispersal behaviors of B. melanopus adults in young forests were discussed, and the management approach of logging old forests may be necessary to prevent the beetle population from spreading throughout nearby young forest.

Key words: Camellia oleifera, young forest, Basilepta melanopus, spatial distribution patterns, environmental factors

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