Diversity composition and dynamics of arthropod communities in Paridis rhizoma and Bletilla striata of in Pinus kesiya var.langbianensis forest
In order to know the arthropod community composition structure and the diversity in the system of understory planted Paridis rhizoma and Bletilla striata in Pinus kesiya var.langbianensis forest.An investigation on the arthropod community composition structure and the diversity in the system of understory planted P.rhizoma and B.striata in P.kesiya forest was carried out in Lancang County,Pu'er City,Yunnan Province from January of 2022 to December,2022,by using the visual inspection,trap method,yellow and blue trap board,Malaise trap and nocturnal survey method.The results showed that there were 4 153 individuals in 172 species,141 genera,92 families,21 orders and 6 classes on understory planted P.Rhizoma.The dominant individuals were Diptera.There were 5 538 individuals belonging to 186 species,152 genera,97 families,21 orders,and 6 classes on understory planted B.striata,and the dominant species were diptera and hemiptera insects.The diversity index,dominance concentration index,evenness index and richness index of arthropod community of P.rhizoma were 4.070、0.036、0.791 and 20.657,respectively.The diversity index,dominance concentration index,evenness index and richness index of arthropod community of B.striata were 4.111、0.032、0.787 and 21.347,respectively.In addition,the dominant pests on understory planted P.rhizoma were Mecopodidae and Cicadellidae.Mecopodidae peaked in June,and Cicadellidae peaked in August.The main natural enemies of P.rhizoma were Odontoponera transversa,Ectopsocidae and Sciapodinae.The dominant pests on understory planted B.striata were Teleogryllus emma and Cicadellidae.T.emma occurred with the maximum population in July,and Cicadellidae pests occurred with a maximum population in August.The dominant natural enemies of B.striata were Lycosa,Plexippus paykulli,Braconidae and Ichneumonidae.In all,the arthropod community was rich in species and diversity on P.rhizoma and B.striata under the forest of P.kesiya in Lancang County,Pu'er City,Yunnan Province.The prevention and control of superior pests such as Mecopodidae,Cicadellidae and Teleogryllus emma should be strengthened,and the protection and utilization of natural enemies such as parasitic wasps and spiders should be noticed.This study can provide reference for the integrated pest control of P.rhizoma and B.striata,and protection and utilization of natural enemy under P.kesiya forest.
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