Response of soil nematode community structure and diversity to long-term land use in the black soil region in China

文献类型： 外文期刊

第一作者： Pan, Feng-Juan

作者： Pan, Feng-Juan;Xu, Yan-Li;Han, Xiao-Zeng;Zhan, Li-Li;Li, Chun-Jie;Pan, Feng-Juan;McLaughlin, Neil B.;Xue, Allen G.;Yu, Qing;Liu, Wei;Zhao, Dan

作者机构：

关键词： community structure;ecological index;long-term land use;soil nematode;bivariate correlation

期刊名称：ECOLOGICAL RESEARCH （ 影响因子：1.917； 五年影响因子：2.095 ）

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年卷期：

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收录情况： SCI

摘要： Soil nematodes are sensitive to environmental changes and are used widely as indicators of soil conditions. The community structure and diversity of soil nematodes were studied in different long-term land use regimes in the black soil area in Northeast China. The land use regimes were maintained for 22 years, and included crop land (CL), grass land (GL) and bare land (BL). Soil samples were taken throughout the growing season, and nematodes were extracted and identified. A total of 39 nematode genera with relative abundance over 0.1 % were identified. Heterodera was the dominant genus in CL; Boleodorus was the dominant genus in GL, and Boleodorus, Eucephalobus and Filenchus were the dominant genera in BL. Land use had a significant effect on abundance of all soil nematode tropic groups and ecological indices. Sampling time had an effect on soil nematode abundance, but only on three of the eight nematode ecological indices MI (maturity index of free-living nematode), CI (channel index) and EI (enrichment index). SR (species richness index) was highest in GL where plant species diversity was also high. The CI was the highest in BL among three land uses, which means the soil food web dominated, with fungal decomposition channels in BL. Soil nematode community structure and diversity was shown to be an effective and informative tool for analyzing ecological aspects of land use in black soil regions. The data are inconclusive as to whether the effect of land use on soil nematode parameters is direct, or indirect via inducing changes in soil physicochemical properties.

分类号： Q1

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