Biodiv Sci ›› 2008, Vol. 16 ›› Issue (6): 547-554.  DOI: 10.3724/SP.J.1003.2008.08141

Special Issue: 土壤生物与土壤健康

• Original Papers • Previous Articles     Next Articles

Diversity and community analysis of soil nematodes associated with three plant species in Mu Us sandy land of Ordos Plateau

Jianbo Wu, Weibin Ruan(), Fengxing Xie, Jing Li, Yubao Gao   

  1. College of Life Science, Nankai University, Tianjin 300071
  • Received:2008-06-17 Accepted:2008-11-13 Online:2008-11-20 Published:2008-11-20
  • Contact: Weibin Ruan
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The objective of this study was to investigate soil nematode communities associated with three naturally-distributed plant species (Artemisia ordosica, Caragana korshinskii and Cynanchum Komarovii) in Mu Us sandy land in the Ordos Plateau, Inner Mongolia. Total abundance of nematodes was 6,098, mean individual abundance was 169 per 100 g dry soil, represented by 43 genera from 19 families. Acrobeles, Aphelenchus, Rotylenchus and Dorylaimus were the most dominant genera in bacterivores, fungivores, plant-parasites and predators-omnivores, respectively. No differences in the diversity, richness, evenness and the total abundances of soil nematode community were observed among three plant species (P > 0.05). Structure index was significantly (P < 0.05) different among three plant species whereas channel index and enrichment index were not. Plant species not only modified abundance of plant-feeding, omnivorous and predatory nematodes, but also percentage of each trophic group. Bacterivorous and fungivorous nematodes were affected most by the differences in plant species. Results presented here indicated that plant species modified nematode community structure in arid ecosystems.

Key words: sand dune habitat, soil nematodes, community composition, trophic structure, diversity