title: [Community structure and its dynamics of predatory arthropod in jujube orchards intercropped with different herbage species].
abstract: By using community structural characteristic indices and principal component analysis, this paper studied the community structure and its dynamics of predatory arthropod in the jujube orchards intercropped with Astrugalus complanatus, Trifolium repen, Lotus comiculotus, and Medicago sativa. The results showed that in all test jujube orchards, spider and predatory insects were the predominant components of the predatory arthropod community, and their relative abundances were 48.3% - 52.7% and 38.8% - 44.4% , respectively. There were significant differences (P < 0.05) in the mean density, diversity, and evenness of the most common predatory arthropod groups in the jujube orchards intercropped with different herbage species, with the sequence of intercropped with Lotus comiculotus > Medicago sativa > Astrugalus complanatu > Trifolium repens, but for dominant concentration index, the sequence was intercropped with Trifolium repens > Astrugalus complanatu > Medicago sativa > Lotus comiculotus. The average density of predatory spiders was significant higher (P < 0.05) than that of predatory insects in all test jujube orchards. The individuals of Coccinellidae, Pentatomidae, inoccllidae, Chrysopidae, Thomisidae, Araneidae and Phytoseiidae played the dominant role in the community.
authors.affiliation: Key Laboratory of New Technology of Agricultural Application, Beijing 102206, China. glshi@126.com
authors.forename: Guanglu
authors.initials: G
authors.lastname: Shi
authors.forename: Younian
authors.initials: Y
authors.lastname: Wang
authors.forename: Zhenwang
authors.initials: Z
authors.lastname: Miao
authors.forename: Dengke
authors.initials: D
authors.lastname: Li
authors.forename: Tieqiang
authors.initials: T
authors.lastname: Zhang
authors.forename: Tongquan
authors.initials: T
authors.lastname: Yu
authors.forename: Qianlong
authors.initials: Q
authors.lastname: Ji
authors.forename: Hui
authors.initials: H
authors.lastname: Dong
mesh_terms: D000383:Agriculture / Q000379:methods*; D000818:Animals; D001181:Arthropods / Q000254:growth & development / Q000502:physiology*; D017753:Ecosystem; D006109:Poaceae / Q000254:growth & development*; D011157:Population Dynamics; D011235:Predatory Behavior / Q000502:physiology*; D031957:Ziziphus / Q000254:growth & development / Q000469:parasitology*