Canadian Forest Service Publications

Structure and characteristics of the arthropod community in the jujube orchards with different habitats. 2005. Shi, G.L.; Zhao, L.L.; Miao, Z.-W.; Liu, S.Q.; Cao, H.; Li, S.Y.; Pike, B. Acta Entomological Sinica 48(4): 561-567.

Year: 2005

Available from: National Capital Region

Catalog ID: 26002

Language: English / French / Russian

CFS Availability: PDF (request by e-mail)

Abstract

The structure and characteristics of the arthropod communities of jujube orchards with different habitats were analyzed based on the survey in the suburb of Taigu County, Shanxi Province, China. The results indicated that the orchards with weeds had the most abundant arthropods in terms of number of species, but the fewest individuals per species (P < 0.05). The orchards without weeds had the fewest number of species, but the most abundant in terms of individuals per species. Among the arthropods, the phytophagous species were the most abundant, whereas predatory and parasitoid groups were scarce in the weed-free orchards. The phytophagous group was hardly found in the weedy orchards because predatory and parasitoid groups were abundant. There were no significant differences (P > 0.05) in the number of species and individuals per species within the parasitoid group between the orchards intercropping with the soybean and the weed-free ones. The analysis based on the Shannon-Wiener diversity index and relative stability values suggested that the richer the plant diversity, the better regulation ability among arthropod communities. More crops and properly ground cover (weeds) could reduce the possibility of natural enemies migrations. In addition, intercropping with other crops in jujube orchards not only obtained a higher net crop yield, but also increased diversity and evenness of beneficial insects and decreased the degree of pest pressures.

Date modified: