title: [Population structure of soil arthropod in different age Pinus massoniana plantations].
abstract: An investigation was conducted on the population structure of soil arthropod community in the 3-, 8-, 14-, 31-, and 40-years old Pinus massoniana plantations in the upper reaches of the Yangtze River in spring (May) and autumn (October), 2011, aimed to search for the scientific management of the plantation. A total of 4045 soil arthropods were collected, belonging to 57 families. Both the individual density and the taxonomic group number of the soil arthropod community decreased obviously with increasing soil depth, and this trend increased with increasing stand age. The dominant groups and ordinary groups of the soil arthropod community varied greatly with the stand age of P. massoniana plantation, and a significant difference (P<0.05) was observed in the individual density and taxonomic group number among different age P. massoniana plantations. In comparison with other stand age P. massoniana plantations, 3years old P. massoniana plantation had a significant difference in the structure and diversity of soil arthropod community, and the similarity index of the soil arthropod community was lower. The individual density, taxonomic group number, and diversity of soil arthropod community were the highest in 8-years old P. massoniana plantation, and then, decreased obviously with increasing stand age. It was suggested that the land fertility of the P. massoniana plantations could be degraded with increasing stand age, and it would be appropriate to make artificial regulation and restoration in 8-years old P. massoniana plantation.
authors.affiliation: Key Laboratory of Ecological Forestry Engineering, Institute of Ecological Forestry, Sichuan Agricultural University, Wenjiang 611130, Sichuan, China. bobotan1984@163.com
authors.forename: Bo
authors.initials: B
authors.lastname: Tan
authors.forename: Fu-zhong
authors.initials: FZ
authors.lastname: Wu
authors.forename: Wan-qin
authors.initials: WQ
authors.lastname: Yang
authors.forename: Jian
authors.initials: J
authors.lastname: Zhang
authors.forename: Zhen-feng
authors.initials: ZF
authors.lastname: Xu
authors.forename: Yang
authors.initials: Y
authors.lastname: Liu
authors.forename: Xiao-lin
authors.initials: XL
authors.lastname: Gou
mesh_terms: D000818:Animals; D001181:Arthropods / Q000145:classification* / Q000254:growth & development; D044822:Biodiversity; D002681:China; D017753:Ecosystem; D028223:Pinus / Q000145:classification* / Q000254:growth & development; D011156:Population Density; D011157:Population Dynamics; D012987:Soil; D013997:Time Factors
chemical_list: D012987:Soil