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Scientia Silvae Sinicae ›› 2021, Vol. 57 ›› Issue (1): 121-130.doi: 10.11707/j.1001-7488.20210113

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Diversity of Saproxylic Beetles(Coleoptera) in Different Forest Stands of Jiaohe, Jilin Province

Shengdong Liu1,Jiaqi Shi1,Shirui Dong1,Xinyi Wu1,Qingfan Meng1,*,Yan Li1,Hongrui Zhao1,Yinghua Jin2   

  1. 1. Forestry College of Beihua University Jilin 132013
    2. Key Laboratory of Geographical Processes and Ecological Security of Changbai Mountains Ministry of Education School of Geographical Sciences Northeast Normal University Changchun 130024
  • Received:2020-02-13 Online:2021-01-25 Published:2021-03-10
  • Contact: Qingfan Meng

Abstract:

Objective: The mixed forest of Korean pine (Pinus koraiensis) with broad-leaved tree species is the climax forest community in Changbaishan Mountains of Northeast China. There are abundant animals and plants species. In this paper, the saproxylic beetles (Coleoptera) species composition, diversity and the effects of different forest stand factor on the beetles were analyzed in the Korean pine and broad-leaved trees mixed forests. This study aimed to reveal the interaction mechanism between habitat change of forest and saproxylic beetles, as well as to provide basis information for evaluating role of nature forest in protecting the diversity and effects of different habitats on diversity of saproxylic beetles. Method: The saproxylic beetles specimens were collected by flying intercepted traps in Korean pine and broad-leaved trees mixed forests, poplar-birch forests, and ash-walnut forests during the whole active period of the beetles from middle May to late August of 2012 and 2013. The saproxylic beetles were identified by beetles biology, related literature and foreign saproxylic beetles database. Result: Totally 239 beetle species in 39 families were collected, among which 203 species, and 7 465 individuals belonged to saproxylic beetles. The number of the species and individuals of Elateridae, Staphylinidae, Nitidulidae, Cerambycidae were relatively richer. Helota gemmata and Rhysodes craciulus were collected for the first time in this area. The diversity of saproxylic beetles in two Korean pine and broad-leaved tree mixed forests was higher, while it was lower in poplar-birch forest and ash-walnut forest. The species number, individual number, richness index, diversity index of saproxylic beetles were significantly different in different stands, and they were higher in two Korean pine mixed with broad-leaved tree forests than in poplar-birch forest and ash-walnut forest. The canopy density, mean DBH, hectare stock, hectare stems, and shrub coverage had different effects on different saproxylic beetles groups. The canopy density, mean DBH, hectare stock had positive effects on most saproxylic beetles groups. Conclusion: The number of species and individuals of saproxylic beetles are abundant in the Korean pine with broad-leaved tree forests. The Korean pine mixed with broad-leaved tree forests greater stand age, DBH and stock has higher diversity of the saproxylic beetles, and it may play an important role in maintaining the diversity of saproxylic beetles. The number of species and individuals of Cerambycidae is higher in the Korean pine mixed with broad-leaved tree forests than that in the poplar-birch forest and ash-walnut forest. Elateridae is the largest group in the Korean pine mixed with broad-leaved tree forests, and it is different from other groups, the number of Elateridae is the more abundant in the poplar-birch forest with hectare stems and shrub coverage.

Key words: saproxylic beetles, diversity, Korean pine mixed with broad-leaved tree forests, stand factors

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