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Chinese Agricultural Science Bulletin ›› 2021, Vol. 37 ›› Issue (26): 74-79.doi: 10.11924/j.issn.1000-6850.casb2021-0313

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Diversity of Culturable Microorganisms in Black Swamp Soil of Caohai Wetland Under Different Land Use Patterns

You Ping1,2(), Xiao Qunyin1,2, Wang Dan1, Shang Tao1, Yang Jinyi1, Li Yamei1, Xue Xiaohui1,2   

  1. 1School of Ecological Engineering, Guizhou University of Engineering Science, Bijie Guizhou 551700
    2Guizhou Province Key Laboratory of Ecological Protection and Restoration of Typical Plateau Wetlands, Bijie Guizhou 551700
  • Received:2021-03-24 Revised:2021-06-08 Online:2021-09-15 Published:2021-09-30

Abstract:

To explore the changes of soil microorganism in Caohai buffer zone, the distribution of culturable soil microorganisms and soil physical and chemical properties were studied under different land use patterns. The results showed that: (1) different land use patterns significantly affected the soil microbial population, the number of bacteria in cabbage and reed land was significantly lower than that in the other three land use patterns, while the number of actinomycetes in cabbage land, fungi in corn field, ammoniating bacteria in grassland, nitrogen fixing bacteria in peach tree land, cellulose decomposition bacteria in corn field and inorganic phosphorus bacterial in cabbage field were the most; (2) the effects of soil physical and chemical properties on microorganisms were different, organic matter, total nitrogen and alkali hydrolyzable nitrogen were significantly and positively correlated with the number and composition of fungi and cellulose decomposing bacteria, while organic matter and total nitrogen were significantly and negatively correlated with the number and composition of actinomycetes and inorganic phosphorus bacteria. Considering the number of soil microorganism and soil nutrient status under different utilization methods, peach tree land was the suitable land use pattern in the black swamp area of Caohai.

Key words: Caohai, different utilization patterns, soil microorganism, functional microorganism, wetland, diversity

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