[1]ZHANG Aidi,ZHENG Yangxiong,WU Bishan,et al.Soil Microbial Community Diversity and Its Influencing Factors in Coastal Wetland[J].Research of Soil and Water Conservation,2020,27(03):8-14，22.
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Soil Microbial Community Diversity and Its Influencing Factors in Coastal Wetland
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
27
Number of periods:
2020 03
Page number:
8-14，22
Column:
目次
Public date:
2020-04-20
- Title:
- Soil Microbial Community Diversity and Its Influencing Factors in Coastal Wetland
- CLC:
- X172; S153.6
- DOI:
- -
- Abstract:
- In order to study the variation of soil microbial community diversity and its influencing factors in coastal wetland from 2015—2018, mangrove wetland, reed wetland, salicornia wetland and mutual flower rice grass wetland were selected to explore soil microbial community diversity and its influencing factors. The results showed that the basic soil pH values decreased in the order: mangrove wetland>reed wetland>salicornia wetland>mutual flower rice grass wetland, and there was no significant difference in soil pH value between different wetland plant communities (p>0.05); soil organic carbon, total nitrogen and total potassium increased in the order: mangrove wetland<reed wetland<salicornia wetland<mutual flower rice grass wetland; the use of soil microbial carbon sources(AWCD)in different plant communities in coastal wetlands showed a gradually increasing trend on the whole, AWCD increased rapidly within 24 to 72 hours after cultivation, but slowly after 72 hours and sharply after 192 hours. At the same time, the uses of AWCD increased in the order: mangrove wetland<reed wetland<salicornia wetland<mutual flower rice grass wetland, with local fluctuations; carbohydrate and carboxylic acid carbon sources are the main carbon sources of soil microorganisms in different plant communities in coastal wetlands, followed by amino acids, phenolic acids and polymers, and amine carbon sources have the lowest utilization rate; the species richness index(H), evenness index(E), dominance index(Ds)and carbon source utilization richness index(S)of soil microbial community increased in the order: mangrove wetland<reed wetland<salicornia wetland<mutual flower rice grass wetland, with no significant difference in dominance index(Ds)(p>0.05). Principal component analysis results show that there is the high correlation among 18 kinds of carbon sources, among which there are five kinds of carboxylic acid compounds, 3 kinds of polymer compounds, 6 kinds of carbohydrates, 1 kind of aromatic compound, 2 kinds of amino acids, 1 kind of amine compound, amines and amino acids carbon source have main contribution to the separation of main component. Correlation analysis showed that soil nutrients and pH were closely related to the microbial community functional diversity, pH had the negative contribution to soil microbial community functional diversity, and soil nutrients had the positive contribution to soil microbial community functional diversity, which were the important influence factors on the differences of soil microbial community diversity in different plant communities in coastal wetland.
- References:
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Last Update:
2020-04-30