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Scientia Silvae Sinicae ›› 2014, Vol. 50 ›› Issue (5): 109-117.doi: 10.11707/j.1001-7488.20140514

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Species Diversity of Ground-Dwelling Beetles and Its Relationship with Environmental Factors in the Artificial Caragana Brushland of Fixed Sandy Lands in Ningxia

Li Yuecheng1, Zhang Dazhi2, He Dahan1   

  1. 1. School of Agriculture, Ningxia University Yinchuan 750021;
    2. School of Life Sciences, Ningxia University Yinchuan 750021
  • Received:2013-03-11 Revised:2013-09-04 Online:2014-05-25 Published:2014-06-06
  • Contact: 张大治

Abstract:

This paper studied on the species diversity of ground-dwelling beetles and its relationship with environmental factors in Ciyaobao region which was adjacent Lingwu Baijitan National Nature Reserve of Ningxia. Comparisons were conducted among three kinds of habitats of desert landscape, namely, Caragana of Droughty Manually-Fixed Sandy Land (CDMFSL), Artificial Vegetation of Semi-Humid Sandy Land (AVSHSL) and the Arid of Semi-Shifting Sandy Land (ASSSL). Pitfall traps were used to collect ground-dwelling beetle. During the field research, 4 778(50 species) beetles were collected, belongs to 11 families and 50 genera. Tenebrionidae was considered as dominant family, accounted for 48.0% of total species, followed by Curculionidae accounted for 26%. The species richness index and diversity index were the biggest in AVSHSL (total 38 species). The individuals were most in ASSSL, but there the species richness index and diversity index were lowest among three different habitats. There were 16 common species in the three different habitats, and they accounted for 32.0% of total species. Rare species achieved 36.0% in total species. Rarefaction curves based on species and individuals showed that the species richness was highest in AVSHSL, and was lowest in the ASSSL. The canonical correspondence analysis results showed that soil moisture, vegetation coverage and disturbance intensity were the main factors causing beetles diversity differences.

Key words: ground-dwelling beetles, desert landscape, species diversity, Rarefaction curves, canonical correspondence analysis

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