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Effect of Soybean Cultivation on Soil Collembola Community in Marshland of Sanjiang Plain,China |
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| Authors: | Dou Yongjing Chang Liang Zhang Bing Wu Donghui |
| Institution: | 1.Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, 130102, China ;2.University of Chinese Academy of Sciences, Beijing, 100049, China ;3.Georg August University G?ttingen, J.F. Blumenbach Institute of Zoology and Anthropology, Animal Ecology, G?ttingen, 37073, Germany ;4.Key Laboratory of Vegetation Ecology, Ministry of Education, Northeast Normal University, Changchun, 130117, China ;5.Jilin Provincial Key Laboratory of Animal Resource Conservation and Utilization, Northeast Normal University, Changchun, 130117, China ; |
| Abstract: | The Sanjiang Plain, the largest inland freshwater marshland in China, was extensive reclaimed into agricultural land. To assess the effects of marshland reclamation on Collembola, we investigated collembolan communities in a chronosequence of soybean plantations (2, 15, and 25 years) in Sanjiang marshland, Northeastern China. We found that: 1) the densities and species richness of Collembola were promoted after short-term (2 years) cultivation of soybean, but significantly decreased after medium-term cultivation (15 years); 2) the densities of epi-edaphic Collembola increased while the densities of hemi-edaphic Collembola decreased as the elongation of soybean cultivation; 3) compared with S0, two species of Collembola appeared while five species disappeared in S25. The changes of plant communities and the soil traits were supposed to be the key factors affecting the composition of soil Collembola. We thus suggest that original marshland should be saved for preserving high diversity and densities of Collembola in the Sanjiang Plain. |
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