Journal of Ecology and Rural Environment ›› 2020, Vol. 36 ›› Issue (10): 1318-1324.doi: 10.19741/j.issn.1673-4831.2020.0220

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Bacterial Diversity of Maize Planting Soil in Typical Ecological Regions of Jilin Province

WANG Yuan-yuan, WANG Ji-yan, YAN Li, GAO Qiang   

  1. Key Laboratory of Sustainable Use of Soil Resources of Jilin Provincial Grain Base/College of Resources and Environment, Jilin Agricultural University, Changchun 130118, China
  • Received:2020-03-31 Online:2020-10-25 Published:2020-10-20

Abstract: In this study, the bacterial diversity, enzyme activity and soil physicochemical properties of 72 soil samples collected from maize fields of three typical ecological regions (Eastern humid mountain area, central semi humid plain area and western semi-arid plain area) from east to west of Jilin Province were analyzed, and the environmental driving mechanism of bacterial community diversity in typical soils in Jilin Province was discussed. The results show that the organic matter content of Maize Soil in the three typical ecological regions of Jilin Province was in the order of East > Central > West; the number of bacteria in Central area was the highest, and in the East and West was lower. The diversity index showed a gradually decreasing trend from west to east. The activities of neutral and acid phosphatase also showed similar rules, while the activities of sucrase and alkaline phosphate showed opposite trends. Proteobacteria and Actinobacteria were the dominant bacteria phylum in the three ecological regions; and Gemmatimonas and Ochrobactrum were the dominant genera; the abundance of Actinobacteria increased gradually from east to west, while the content of Proteobacteria was opposite. Gemmatimonas showed a trend of Central semi humid plain area > Eastern semi humid Mountain Area > Western semi-arid plain area, and Ochrobactrum showed decreasing trend from east to west. The results of canonical analysis show that, among the climatic factors, rainfall and latitude had a greater impact on the composition of bacterial microbial community. pH value, alkali hydrolyzable nitrogen and organic matter were the main driving factors for the change of soil bacterial dominant groups, which was of great significance to the improvement of the management strategy of maize planting soil in Jilin Province.

Key words: ecological regions, environmental factors, bacteria, diversity

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