›› 2019, Vol. 31 ›› Issue (6): 946-954.DOI: 10.3969/j.issn.1004-1524.2019.06.12

• Environmental Science • Previous Articles     Next Articles

Effect of fertilization on soil fauna community structure in farmland

LUO Manli1, 2, LAN Qin3, WANG Ge4, WEI Hong3, XIAO Jiujin1, 2, *, ZHANG Jian1, 2   

  1. 1. Institute of Ecological Forestry, Sichuan Agricultural University, Chengdu 611130, China;
    2. Key Laboratory of Ecological Forestry Engineering in Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China;
    3. College of Tourism, Sichuan Agricultural University, Chengdu 611830, China;
    4. Provincial Nature Reserve of Jiuding Mountain of Sichuan Province, Deyang 618400, China
  • Received:2018-12-28 Online:2019-06-25 Published:2019-06-26

Abstract: In order to explore the impact of fertilization on soil fauna community structure, urea was selected as test fertilizer, and an experiment with different fertilizing amounts, i.e. 225 kg·hm-2 (T1), 450 kg·hm-2 (T2), 900 kg·hm-2 (T3), 1 800 kg·hm-2 (T4), 3 600 kg·hm-2 (T5), and plot without fertilizer as control (CK) was carried out. The hand-picked concentrations and wet and dry separation funnel were recorded to reflect the characteristics of soil fauna communities in the survey. It was shown that all the collected soil fauna samples went to 3 phyla, 13 classes, 19 orders, 40 families. The order of the average density of soil fauna of different treatments was as CK>T2>T1>T3>T5>T4. The order of species quantity of different treatments was as T1>CK>T2>T4>T5>T3. With the increasing application amount of fertilizer, the average density of both macro-fauna and nematodes and meso-fauna in soil showed a decreasing trend. Among all the treatments with fertilization, T2 exhibited the lowest Shannon-Wiener index and Simpson index, and the highest Pielou index. In general, over application of fertilizer would reduce the quantity of soil animals, the diversity of soil fauna community, and impact soil fauna community structure.

Key words: fertilization, soil fauna, community structure

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