Effects of tillage and residue management on soil nematode communities in North China

Xiaoke Zhang, Qi Li, Anning Zhu, Wenju Liang, Jiabao Zhang, Yosef Steinberger

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99 Scopus citations

Abstract

Soil nematode abundance, community composition and biomass were determined in the Fengqiu State Key Agro-Ecological Experimental Station, North China, in order to evaluate the effects of tillage system (conventional tillage and no-tillage) and residue management (0, 50% and 100% wheat residue incorporation/coverage) on the nematode communities. Two kinds of indicators (descriptive and evaluative) were categorized. Of the descriptive indicators, residue management had a significant effect on the total nematode abundance, biomass and trophic groups except for bacterivores. Of the evaluative indicators, Shannon diversity (H′), generic richness (GR), nematode channel ratio (NCR) and enrichment index (EI) significantly increased with increasing residue quantity, whereas dominance (λ), basal index (BI) and channel index (CI) exhibited an opposite trend. Significant tillage effects were observed on the trophic diversity (TD), EI, CI and carbon production (P). The responses of nematodes to tillage and residue were genus-dependent. Canonical correspondence analysis indicated that tillage explained 4.9% and 15.4%, and residue management explained 5.2% and 13.1% of the variations in soil nematode abundance and biomass, respectively. Different metabolic footprint characteristics of the food web were demonstrated graphically by enrichment and structure footprints. The evaluative indicators, such as EI and CI, were sensitive to both tillage and residue management. The descriptive indicators could be used to obtain an intuitive answer to the effect of residue management and the evaluative indicators were more comprehensive for interpreting the structure and function of the soil food web under different tillage and residue management regimes.

Original languageEnglish
Pages (from-to)75-81
Number of pages7
JournalEcological Indicators
Volume13
Issue number1
DOIs
StatePublished - Feb 2012

Bibliographical note

Funding Information:
We thank Prof. Maihe Li, Swiss Federal Research Institute, and the two anonymous reviewers provided by the journal for insightful reviews of the manuscript. This research was supported by the National Basic Research Program of China (973 Program) (Nos. 2011CB100504 and 2011CB100506 ) and the Knowledge Innovation Programs of the Chinese Academy of Sciences (No. KZCX2-YW-445 ).

Funding

We thank Prof. Maihe Li, Swiss Federal Research Institute, and the two anonymous reviewers provided by the journal for insightful reviews of the manuscript. This research was supported by the National Basic Research Program of China (973 Program) (Nos. 2011CB100504 and 2011CB100506 ) and the Knowledge Innovation Programs of the Chinese Academy of Sciences (No. KZCX2-YW-445 ).

FundersFunder number
Chinese Academy of SciencesKZCX2-YW-445
National Key Research and Development Program of China2011CB100506, 2011CB100504

    Keywords

    • Bioindication
    • Descriptive indicator
    • Evaluative indicator
    • Residue management
    • Soil nematodes
    • Tillage

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