JOURNAL OF NANJING FORESTRY UNIVERSITY ›› 2014, Vol. 38 ›› Issue (03): 1-7.doi: 10.3969/j.issn.1000-2006.2014.03.001

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Effects of soil fauna on litter decomposition and its community structure under different land use patterns in coastal region of northern Jiangsu province

FAN Huan1, WANG Shaojun2, RUAN Honghua1*,TAN Yan1, ZHENG Abao1,3, XU Yu1, XU Kai1, CAO Guohua4   

  1. 1.Jiangsu Key Laboratory of Forestry Ecological Engineering, Nanjing Forestry University, Nanjing 210037, China;
    2.College of Environment Science and Engineering, Southwest Forestry University,Kunming 650224,China;
    3.Forestry Department of Jiangsu Province, Nanjing 210036, China;
    4.Dongtai City Forest Farm of Jiangsu Province, Dongtai 224200, China
  • Online:2014-05-15 Published:2014-05-15

Abstract: We conducted the investigation of soil fauna and its influence on litter decomposition and in total by different mesh sizes(5, 1 and 0.01 mm)litterbag under different land use patterns(i.e. poplar-crop integrated system, poplar plantation, cropland and grassland)in Dongtai forest farm of Jiangsu province. 25 715 individuals of soil meso- and macro-fauna were obtained through 4 samplings from 2012 to 2013, which belonged to 3 phyla, 13 classes and 35 orders. The mass remaining in the sites was in order of small mesh(59.32%)>coarse mesh(48.03%)>medium mesh(44.70%). Most of the diversity comparisons between sites differed significantly. Pielou biodiversity index was negatively correlated with litter remaining in coarse mesh litterbag(p<0.05), while the relationship between Shannon diversity index and litter remaining in different mesh sizes had no significant difference. The average contribution ratio of soil meso- and micro-fauna to litter decomposition(24.89%)was much bigger than that in the coarse mesh litterbag(0.70%). Our results suggest that land use changes alter the community structure of soil fauna, and then influence litter decomposition in this coastal region.

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