Positive Effects of Organic Amendments on Soil Microbes and Their Functionality in Agro-Ecosystems
Soil microbial characteristics are considered to be an index for soil quality evaluation. It is generally believed that organic amendments replacing chemical fertilizers have positive effects on changing microbial activity and community structure. However, their effects on different agro-ecosystems...
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| Format: | Article |
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MDPI AG
2023-11-01
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| Series: | Plants |
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| Online Access: | https://www.mdpi.com/2223-7747/12/22/3790 |
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| author | Weijia Liu Zepeng Yang Qinxin Ye Zhaohui Peng Shunxi Zhu Honglin Chen Dinghui Liu Yiding Li Liangji Deng Xiangyang Shu Han Huang |
| author_facet | Weijia Liu Zepeng Yang Qinxin Ye Zhaohui Peng Shunxi Zhu Honglin Chen Dinghui Liu Yiding Li Liangji Deng Xiangyang Shu Han Huang |
| author_sort | Weijia Liu |
| collection | DOAJ |
| description | Soil microbial characteristics are considered to be an index for soil quality evaluation. It is generally believed that organic amendments replacing chemical fertilizers have positive effects on changing microbial activity and community structure. However, their effects on different agro-ecosystems on a global scale and their differences in different environmental conditions and experimental durations are unclear. This study performed a meta-analysis based on 94 studies with 204 observations to evaluate the overall effects and their differences in different experimental conditions and duration. The results indicated that compared to chemical fertilizer, organic amendments significantly increased total microbial biomass, bacterial biomass, fungal biomass, Gram-positive bacterial biomass and Gram-negative bacterial biomass, and had no effect on the ratio of fungi to bacteria and ratio of Gram-positive bacteria to Gram-negative bacteria. Meanwhile, land use type, mean annual precipitation and soil initial pH are essential factors affecting microbial activity response. Organic-amendment-induced shifts in microbial biomass can be predominantly explained by soil C and nutrient availability changes. Additionally, we observed positive relationships between microbial functionality and microbial biomass, suggesting that organic-amendment-induced changes in microbial activities improved soil microbial functionality. |
| first_indexed | 2024-03-09T16:31:01Z |
| format | Article |
| id | doaj.art-0654ff58e68543f5a479d49c3421a590 |
| institution | Directory Open Access Journal |
| issn | 2223-7747 |
| language | English |
| last_indexed | 2024-03-09T16:31:01Z |
| publishDate | 2023-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Plants |
| spelling | doaj.art-0654ff58e68543f5a479d49c3421a5902023-11-24T15:01:47ZengMDPI AGPlants2223-77472023-11-011222379010.3390/plants12223790Positive Effects of Organic Amendments on Soil Microbes and Their Functionality in Agro-EcosystemsWeijia Liu0Zepeng Yang1Qinxin Ye2Zhaohui Peng3Shunxi Zhu4Honglin Chen5Dinghui Liu6Yiding Li7Liangji Deng8Xiangyang Shu9Han Huang10Institute of Agricultural Bioenvironment and Energy, Chengdu Academy of Agriculture and Forestry Sciences, Chengdu 611130, ChinaSoil and Fertilizer Research Institute, Sichuan Academy of Agricultural Sciences, Chengdu 610066, ChinaInstitute of Agricultural Bioenvironment and Energy, Chengdu Academy of Agriculture and Forestry Sciences, Chengdu 611130, ChinaInstitute of Agricultural Bioenvironment and Energy, Chengdu Academy of Agriculture and Forestry Sciences, Chengdu 611130, ChinaInstitute of Agricultural Bioenvironment and Energy, Chengdu Academy of Agriculture and Forestry Sciences, Chengdu 611130, ChinaSoil and Fertilizer Research Institute, Sichuan Academy of Agricultural Sciences, Chengdu 610066, ChinaSoil and Fertilizer Research Institute, Sichuan Academy of Agricultural Sciences, Chengdu 610066, ChinaCollege of Resources, Sichuan Agricultural University, Chengdu 611130, ChinaCollege of Resources, Sichuan Agricultural University, Chengdu 611130, ChinaInstitute of Agricultural Bioenvironment and Energy, Chengdu Academy of Agriculture and Forestry Sciences, Chengdu 611130, ChinaCollege of Economics and Management, Xinjiang Agricultural University, Urumqi 830052, ChinaSoil microbial characteristics are considered to be an index for soil quality evaluation. It is generally believed that organic amendments replacing chemical fertilizers have positive effects on changing microbial activity and community structure. However, their effects on different agro-ecosystems on a global scale and their differences in different environmental conditions and experimental durations are unclear. This study performed a meta-analysis based on 94 studies with 204 observations to evaluate the overall effects and their differences in different experimental conditions and duration. The results indicated that compared to chemical fertilizer, organic amendments significantly increased total microbial biomass, bacterial biomass, fungal biomass, Gram-positive bacterial biomass and Gram-negative bacterial biomass, and had no effect on the ratio of fungi to bacteria and ratio of Gram-positive bacteria to Gram-negative bacteria. Meanwhile, land use type, mean annual precipitation and soil initial pH are essential factors affecting microbial activity response. Organic-amendment-induced shifts in microbial biomass can be predominantly explained by soil C and nutrient availability changes. Additionally, we observed positive relationships between microbial functionality and microbial biomass, suggesting that organic-amendment-induced changes in microbial activities improved soil microbial functionality.https://www.mdpi.com/2223-7747/12/22/3790organic amendmentsmicrobessoil fertilitycrop yieldagro-ecosystemmeta-analysis |
| spellingShingle | Weijia Liu Zepeng Yang Qinxin Ye Zhaohui Peng Shunxi Zhu Honglin Chen Dinghui Liu Yiding Li Liangji Deng Xiangyang Shu Han Huang Positive Effects of Organic Amendments on Soil Microbes and Their Functionality in Agro-Ecosystems Plants organic amendments microbes soil fertility crop yield agro-ecosystem meta-analysis |
| title | Positive Effects of Organic Amendments on Soil Microbes and Their Functionality in Agro-Ecosystems |
| title_full | Positive Effects of Organic Amendments on Soil Microbes and Their Functionality in Agro-Ecosystems |
| title_fullStr | Positive Effects of Organic Amendments on Soil Microbes and Their Functionality in Agro-Ecosystems |
| title_full_unstemmed | Positive Effects of Organic Amendments on Soil Microbes and Their Functionality in Agro-Ecosystems |
| title_short | Positive Effects of Organic Amendments on Soil Microbes and Their Functionality in Agro-Ecosystems |
| title_sort | positive effects of organic amendments on soil microbes and their functionality in agro ecosystems |
| topic | organic amendments microbes soil fertility crop yield agro-ecosystem meta-analysis |
| url | https://www.mdpi.com/2223-7747/12/22/3790 |
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