祝鑫宇, 张健本, 梁雪松, 等. 广西雅长桉人工林和毗邻地带性天然林地表昆虫群落比较研究[J]. 西南林业大学学报(自然科学), 2025, 45(1): 1–9. DOI: 10.11929/j.swfu.202403019
引用本文: 祝鑫宇, 张健本, 梁雪松, 等. 广西雅长桉人工林和毗邻地带性天然林地表昆虫群落比较研究[J]. 西南林业大学学报(自然科学), 2025, 45(1): 1–9. DOI: 10.11929/j.swfu.202403019
Zhu Xinyu, Zhang Jianben, Liang Xuesong, Li Mengli, Jiang Chaoyou, Meng Fengqun. Comparative Study on Ground-dwelling Insect Communities between Eucalyptus Plantations and Adjacent Zonal Natural Forests in Yachang, Guangxi[J]. Journal of Southwest Forestry University. DOI: 10.11929/j.swfu.202403019
Citation: Zhu Xinyu, Zhang Jianben, Liang Xuesong, Li Mengli, Jiang Chaoyou, Meng Fengqun. Comparative Study on Ground-dwelling Insect Communities between Eucalyptus Plantations and Adjacent Zonal Natural Forests in Yachang, Guangxi[J]. Journal of Southwest Forestry University. DOI: 10.11929/j.swfu.202403019

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广西雅长桉人工林和毗邻地带性天然林地表昆虫群落比较研究

Comparative Study on Ground-dwelling Insect Communities between Eucalyptus Plantations and Adjacent Zonal Natural Forests in Yachang, Guangxi

  • 摘要: 用巴氏罐诱集法在广西雅长兰科植物自然保护区调查3种林分地表昆虫群落,从植物群落、林分结构、土壤因子和凋落物因子探讨地表昆虫群落组成差异的影响机制。结果表明:桉树人工林地表昆虫多样性显著高于喀斯特天然林而低于土山天然林;桉树人工林地表昆虫群落组成与土山天然林、喀斯特天然林均存在显著差异,桉树人工林以蜚蠊科、蟋蟀科为主,土山天然林以蟋蟀科、姬蠊科、猎蝽科、果蝇科、蜚蠊科为主,喀斯特天然林以露尾甲科、果蝇科为主;植物群落组成、林下幼苗密度和凋落物盖度的差异是导致桉树人工林与土山天然林地表昆虫群落组成差异的主要驱动因子,3个因子合计解释了2个林分地表昆虫群落组成差异74.46%的异质性;林下植物密度、凋落物盖度和凋落物氮含量差异是导致桉树人工林与喀斯特天然林昆虫群落组成差异的主要驱动因子,3个因子合计解释了2个林分地表昆虫群落组成差异62.27%的异质性。桉树人工公益林林下植物减少导致其地表昆虫多样性降低。

     

    Abstract: This study investigated ground-dwelling insect communities by using pitfall trap method in the above three forest types in Yachang Orchids Nature Reserve, Guangxi, and unraveled the role of plant communities, stand structure, soil and litter properties involved in the associated mechanisms. The results showed that the ground-dwelling insect diversity in Eucalyptus plantations was significantly lower than that in non-karst natural forests but greater than in karst natural forests. The ground-dwelling insect community composition of Eucalyptus plantations was significantly different from those of karst and non-karst natural forests. Eucalyptus plantations were dominated by Blattidae and Gryllidae; non-karst natural forests were dominated by Gryllidae, Blattellidae, Reduviidae, Drosophilidae and Blattidae; karst natural forests were dominated by Nitidulidae and Drosophilidae. The difference in ground-dwelling insect community composition between Eucalyptus plantations and non-karst natural forests was driven by plant community, seedling density and litter cover, explaining 74.46% of overall dissimilarity in ground-dwelling insect community composition between the two forest types. The difference in ground-dwelling insect community composition between Eucalyptus plantations and karst natural forests was driven by understory tree density, litter cover and litter nitrogen content, explaining 62.27% of overall dissimilarity in ground-dwelling insect community composition between the two forest types. A reduction of understory plants leads to a reduction of ground-dwelling insect diversity in Eucalyptus ecological public forests.

     

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