Aggregate-related microbial communities and nutrient stoichiometry under different croplands
Abstract Ecological stoichiometry is an important indicator presenting multiple elements balance in agro-ecosystems. However, information on microbial communities and nutrient stoichiometry in soil aggregate fractions under different croplands (rice, maize, and soybean fields) remains limited. Thus,...
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| Format: | Article |
| Language: | English |
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SpringerOpen
2020-06-01
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| Series: | Ecological Processes |
| Subjects: | |
| Online Access: | http://link.springer.com/article/10.1186/s13717-020-00239-4 |
| _version_ | 1818285067154227200 |
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| author | Hu Cui Yang Ou Duian Lv Lixia Wang Aizhen Liang Baixing Yan Yingxin Li |
| author_facet | Hu Cui Yang Ou Duian Lv Lixia Wang Aizhen Liang Baixing Yan Yingxin Li |
| author_sort | Hu Cui |
| collection | DOAJ |
| description | Abstract Ecological stoichiometry is an important indicator presenting multiple elements balance in agro-ecosystems. However, information on microbial communities and nutrient stoichiometry in soil aggregate fractions under different croplands (rice, maize, and soybean fields) remains limited. Thus, this study investigated water-stable aggregate structure and their internal nutrient stoichiometry under different croplands and ascertain their interaction mechanism with microbial communities. The results showed that no significant difference on the carbon-to-nitrogen ratio (C:N) in soil aggregate fractions was observed, while the carbon-to-phosphorus ratio (C:P) and the nitrogen-to-phosphorus ratio (N:P) were ranked as rice field > maize field > soybean field, and were higher in mega-aggregates (ME, > 1 mm). General fatty acid methyl ester (FAME), Gram-positive bacteria (G+), and Gram-negative bacteria (G−) were predominant microbial communities in all croplands and tented to condense into coarse-aggregates. Redundancy analysis (RDA) demonstrated that N:P ratio was primary environmental controls on the distribution of soil microorganisms. In the Sanjiang Plain, N was the nutrient element limiting agro-ecosystem productivity, and rice cultivation is expected to improve the N-limited nutrient status. |
| first_indexed | 2024-12-13T01:02:48Z |
| format | Article |
| id | doaj.art-49a343974c224ef0849675671daa1c34 |
| institution | Directory Open Access Journal |
| issn | 2192-1709 |
| language | English |
| last_indexed | 2024-12-13T01:02:48Z |
| publishDate | 2020-06-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Ecological Processes |
| spelling | doaj.art-49a343974c224ef0849675671daa1c342022-12-22T00:04:38ZengSpringerOpenEcological Processes2192-17092020-06-01911910.1186/s13717-020-00239-4Aggregate-related microbial communities and nutrient stoichiometry under different croplandsHu Cui0Yang Ou1Duian Lv2Lixia Wang3Aizhen Liang4Baixing Yan5Yingxin Li6Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of SciencesKey Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of SciencesSecond Institute of Oceanography, Ministry of Natural ResourcesKey Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of SciencesKey Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of SciencesKey Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of SciencesKey Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of SciencesAbstract Ecological stoichiometry is an important indicator presenting multiple elements balance in agro-ecosystems. However, information on microbial communities and nutrient stoichiometry in soil aggregate fractions under different croplands (rice, maize, and soybean fields) remains limited. Thus, this study investigated water-stable aggregate structure and their internal nutrient stoichiometry under different croplands and ascertain their interaction mechanism with microbial communities. The results showed that no significant difference on the carbon-to-nitrogen ratio (C:N) in soil aggregate fractions was observed, while the carbon-to-phosphorus ratio (C:P) and the nitrogen-to-phosphorus ratio (N:P) were ranked as rice field > maize field > soybean field, and were higher in mega-aggregates (ME, > 1 mm). General fatty acid methyl ester (FAME), Gram-positive bacteria (G+), and Gram-negative bacteria (G−) were predominant microbial communities in all croplands and tented to condense into coarse-aggregates. Redundancy analysis (RDA) demonstrated that N:P ratio was primary environmental controls on the distribution of soil microorganisms. In the Sanjiang Plain, N was the nutrient element limiting agro-ecosystem productivity, and rice cultivation is expected to improve the N-limited nutrient status.http://link.springer.com/article/10.1186/s13717-020-00239-4Sanjiang PlainCroplandsSoil aggregatesMicrobial communitiesEcological stoichiometry |
| spellingShingle | Hu Cui Yang Ou Duian Lv Lixia Wang Aizhen Liang Baixing Yan Yingxin Li Aggregate-related microbial communities and nutrient stoichiometry under different croplands Ecological Processes Sanjiang Plain Croplands Soil aggregates Microbial communities Ecological stoichiometry |
| title | Aggregate-related microbial communities and nutrient stoichiometry under different croplands |
| title_full | Aggregate-related microbial communities and nutrient stoichiometry under different croplands |
| title_fullStr | Aggregate-related microbial communities and nutrient stoichiometry under different croplands |
| title_full_unstemmed | Aggregate-related microbial communities and nutrient stoichiometry under different croplands |
| title_short | Aggregate-related microbial communities and nutrient stoichiometry under different croplands |
| title_sort | aggregate related microbial communities and nutrient stoichiometry under different croplands |
| topic | Sanjiang Plain Croplands Soil aggregates Microbial communities Ecological stoichiometry |
| url | http://link.springer.com/article/10.1186/s13717-020-00239-4 |
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