title: [Distribution characteristics of soil nematodes in reclaimed land of copper-mine-tailings in different plant associations].
abstract: A survey was carried out to investigate soil nematode communities in the plant associations of gramineae (Arthraxon lanceolatus, AL; Imperata cylindrica, IC) and leguminosae (Glycine soja, GS) in reclaimed land of copper-mine-tailings and in the plant associations of gramineae (Digitaria chrysoblephara, DC-CK) of peripheral control in Fenghuang Mountain, Tongling City. A total of 1277 nematodes were extracted and sorted into 51 genera. The average individual density of the nematodes was 590 individuals · 100 g(-1) dry soil. In order to analyze the distribution character- istics of soil nematode communities in reclaimed land of copper-mine-tailings, Shannon community diversity index and soil food web structure indices were applied in the research. The results showed that the total number of nematode genus and the Shannon community diversity index of soil nematode in the three plant associations of AL, IC and GS were less than that in the plant associations of DC-CK. Compared with the ecological indices of soil nematode communities among the different plant associations in reclaimed land of copper-mine-tailings and peripheral natural habitat, we found that the structure of soil food web in the plant associations of GS was more mature, with bacterial decomposition being dominant in the soil organic matter decomposition, and that the soil ecosystem in the plant associations of GS was not stable with low interference. This indicated that the soil food web in the plant associations of leguminosae had a greater development potential to improve the ecological stability of the reclaimed land of copper-mine-tailings. On the other hand, the structure of soil food web in the plant associations of AL and IC were relatively stable in a structured state with fungal decomposition being dominant in the decomposition of soil organic matter. This indicated that the soil food web in the plant associations of gramineae was at a poor development level.
authors.forename: Yong-heng
authors.initials: YH
authors.lastname: Zhu
authors.forename: Ke-zhong
authors.initials: KZ
authors.lastname: Li
authors.forename: Heng
authors.initials: H
authors.lastname: Zhang
authors.forename: Fei
authors.initials: F
authors.lastname: Han
authors.forename: Ju-hua
authors.initials: JH
authors.lastname: Zhou
authors.forename: Ting-ting
authors.initials: TT
authors.lastname: Gao
mesh_terms: D000818:Animals; D003300:Copper; D017753:Ecosystem; D007887:Fabaceae; D020387:Food Chain; D008906:Mining; D009348:Nematoda; D006109:Poaceae; D012987:Soil; D012988:Soil Microbiology
chemical_list: D012987:Soil; D003300:Copper