1. Changes of the organic carbon content and stability of soil aggregates affected by soil bacterial community after afforestation
- Author
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X.D. Fan, Fazhu Zhao, Gaihe Yang, Jun Wang, L. Zhang, Chengjie Ren, Xinhui Han, and Russell Doughty
- Subjects
Total organic carbon ,Setaria ,biology ,Chemistry ,Chronosequence ,Robinia ,04 agricultural and veterinary sciences ,Soil carbon ,Ecological succession ,010501 environmental sciences ,biology.organism_classification ,01 natural sciences ,Agronomy ,040103 agronomy & agriculture ,0401 agriculture, forestry, and fisheries ,Afforestation ,Composition (visual arts) ,0105 earth and related environmental sciences ,Earth-Surface Processes - Abstract
Soil aggregation is one of the most important factors affecting soil organic carbon (SOC) stabilization, and the stability of aggregates depends in part on soil microbial diversity and composition. Interactions between the soil bacterial community and SOC content in soil aggregates after afforestation are poorly understood. In this study, we investigated difference in the diversity of soil bacterial with high-throughput 16S rRNA sequencing, as well as the SOC content in soil aggregates representing a chronosequence of 42, 27, and 17 years of Robinia pseudoacacia L. succession (RP42, RP27, and RP17), and in farmland (FL) soil for comparison (millet (Setaria italica) and soybean (Glycine max) rotation).The SOC content in RP17, RP27, and RP42 plots were significantly higher than that of FL by an average of 85.57%, 142.37%, and 76.69% in large macro-aggregates (>1 mm), small macro-aggregates (0.25–1 mm), and micro-aggregates (
- Published
- 2018
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