[1]MENG Yanjun,QIN Peng.Coupling Relationship Between Microbial Community Diversity and Soil Nutrients in Different Wetlands in Coastal Area of Pearl Rive Delta[J].Research of Soil and Water Conservation,2020,27(06):77-84.
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Coupling Relationship Between Microbial Community Diversity and Soil Nutrients in Different Wetlands in Coastal Area of Pearl Rive Delta
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
27
Number of periods:
2020 06
Page number:
77-84
Column:
目次
Public date:
2020-10-20
- Title:
- Coupling Relationship Between Microbial Community Diversity and Soil Nutrients in Different Wetlands in Coastal Area of Pearl Rive Delta
- CLC:
- S154.3; S158.3
- DOI:
- -
- Abstract:
- In order to study the variation of soil microbial community diversity and its influencing factors in coastal wetlands from 2015 to 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 pH value of soil decreased in the order: Spartina alterniflora wetland>Suaeda glaucawetland>Phragmites communis wetland>Rhizophora apiculata 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: Spartina alterniflora<Suaeda glauca wetland<Phragmites communis wetland<Rhizophora apiculata wetland; the number of soil bacteria in different plant communities in coastal wetlands was absolutely dominant, accounting for about 70% of the total number of microorganisms, followed by actinomycetes, with the least fungi; the total number of soil microorganisms, fungi and actinomycetes increased in the order, the wetland of Spartina alterniflora<Suaeda glauca wetland<Phragmites communis wetland<mangrove wetland, among which the difference among different wetlands was significant (p<0.05); the soil microbial biomass of carbon, nitrogen and phosphorus increased in the order, Spartina alterniflora<Suaeda glauca wetland<Phragmites communis wetland<Rhizophora apiculata wetland, among which soil microbial biomass of carbon and nitrogen was significantly different in different wetlands (p<0.05); the difference of microbial biomass phosphorus in different wetlands was not significant (p>0.05); 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, Spartina alterniflora<Suaeda glauca wetland<Phragmites communis wetland<Rhizophora apiculata wetland, among which the dominance index(Ds)was not significantly different (p>0.05). Correlation analysis showed that soil nutrients and pH value was closely related to the microbial community functional diversity, including negative contribution of pH value to soil microbial community functional diversity and positive contribution of soil nutrients to soil microbial community functional diversity, soil pH value and nutrients were the important influence factors on soil microbial community diversity in different plant communities of coastal wetlands. Soil nutrients were closely related to microbial quantity and microbial biomass, and their contents greatly affected microbial quantity and activity. In the process of ecological protection and evaluation, the change characteristics and coupling relationships of soil microorganisms and nutrients under coastal wetlands should be fully considered.
- References:
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Last Update:
2020-10-20