The responses of CO2 emission to nitrogen application and earthworm addition in the soybean cropland
The effects of nitrogen application or earthworms on soil respiration in the Huang-Huai-Hai Plain of China have received increasing attention. However, the response of soil carbon dioxide (CO2) emission to nitrogen application and earthworm addition is still unclear. A field experiment with nitrogen...
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| Формат: | Стаття |
| Мова: | English |
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PeerJ Inc.
2024-03-01
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| Серія: | PeerJ |
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| Онлайн доступ: | https://peerj.com/articles/17176.pdf |
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| author | Mei Guang Jiang Jingyuan Yang Qi Xu Linyu Qi Yue Gao Cancan Zhao Huijie Lu Yuan Miao Shijie Han |
| author_facet | Mei Guang Jiang Jingyuan Yang Qi Xu Linyu Qi Yue Gao Cancan Zhao Huijie Lu Yuan Miao Shijie Han |
| author_sort | Mei Guang Jiang |
| collection | DOAJ |
| description | The effects of nitrogen application or earthworms on soil respiration in the Huang-Huai-Hai Plain of China have received increasing attention. However, the response of soil carbon dioxide (CO2) emission to nitrogen application and earthworm addition is still unclear. A field experiment with nitrogen application frequency and earthworm addition was conducted in the Huang-Huai-Hai Plain. Results showed nitrogen application frequency had a significant effect on soil respiration, but neither earthworms nor their interaction with nitrogen application frequency were significant. Low-frequency nitrogen application (NL) significantly increased soil respiration by 25%, while high-frequency nitrogen application (NH), earthworm addition (E), earthworm and high-frequency nitrogen application (E*NH), and earthworm and low-frequency nitrogen application (E*NL) also increased soil respiration by 21%, 21%, 12%, and 11%, respectively. The main reason for the rise in soil respiration was alterations in the bacterial richness and keystone taxa (Myxococcales). The NH resulted in higher soil nitrogen levels compared to NL, but NL had the highest bacterial richness. The abundance of Corynebacteriales and Gammaproteobacteria were positively connected with the CO2 emissions, while Myxococcales, Thermoleophilia, and Verrucomicrobia were negatively correlated. Our findings indicate the ecological importance of bacterial communities in regulating the carbon cycle in the Huang-Huai-Hai Plain. |
| first_indexed | 2024-04-24T17:09:12Z |
| format | Article |
| id | doaj.art-2f2746cb0e504839a30bdab4486f63df |
| institution | Directory Open Access Journal |
| issn | 2167-8359 |
| language | English |
| last_indexed | 2024-04-24T17:09:12Z |
| publishDate | 2024-03-01 |
| publisher | PeerJ Inc. |
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| series | PeerJ |
| spelling | doaj.art-2f2746cb0e504839a30bdab4486f63df2024-03-28T15:05:23ZengPeerJ Inc.PeerJ2167-83592024-03-0112e1717610.7717/peerj.17176The responses of CO2 emission to nitrogen application and earthworm addition in the soybean croplandMei Guang Jiang0Jingyuan Yang1Qi Xu2Linyu Qi3Yue Gao4Cancan Zhao5Huijie Lu6Yuan Miao7Shijie Han8School of Life Sciences, Henan University, Henan, ChinaSchool of Life Sciences, Henan University, Henan, ChinaSchool of Life Sciences, Henan University, Henan, ChinaSchool of Life Sciences, Henan University, Henan, ChinaSchool of Life Sciences, Henan University, Henan, ChinaSchool of Life Sciences, Henan University, Henan, ChinaSchool of Life Sciences, Henan University, Henan, ChinaSchool of Life Sciences, Henan University, Henan, ChinaSchool of Life Sciences, Henan University, Henan, ChinaThe effects of nitrogen application or earthworms on soil respiration in the Huang-Huai-Hai Plain of China have received increasing attention. However, the response of soil carbon dioxide (CO2) emission to nitrogen application and earthworm addition is still unclear. A field experiment with nitrogen application frequency and earthworm addition was conducted in the Huang-Huai-Hai Plain. Results showed nitrogen application frequency had a significant effect on soil respiration, but neither earthworms nor their interaction with nitrogen application frequency were significant. Low-frequency nitrogen application (NL) significantly increased soil respiration by 25%, while high-frequency nitrogen application (NH), earthworm addition (E), earthworm and high-frequency nitrogen application (E*NH), and earthworm and low-frequency nitrogen application (E*NL) also increased soil respiration by 21%, 21%, 12%, and 11%, respectively. The main reason for the rise in soil respiration was alterations in the bacterial richness and keystone taxa (Myxococcales). The NH resulted in higher soil nitrogen levels compared to NL, but NL had the highest bacterial richness. The abundance of Corynebacteriales and Gammaproteobacteria were positively connected with the CO2 emissions, while Myxococcales, Thermoleophilia, and Verrucomicrobia were negatively correlated. Our findings indicate the ecological importance of bacterial communities in regulating the carbon cycle in the Huang-Huai-Hai Plain.https://peerj.com/articles/17176.pdfBacterial communityEarthwormNitrogen applicationSoil respirationSoybean |
| spellingShingle | Mei Guang Jiang Jingyuan Yang Qi Xu Linyu Qi Yue Gao Cancan Zhao Huijie Lu Yuan Miao Shijie Han The responses of CO2 emission to nitrogen application and earthworm addition in the soybean cropland PeerJ Bacterial community Earthworm Nitrogen application Soil respiration Soybean |
| title | The responses of CO2 emission to nitrogen application and earthworm addition in the soybean cropland |
| title_full | The responses of CO2 emission to nitrogen application and earthworm addition in the soybean cropland |
| title_fullStr | The responses of CO2 emission to nitrogen application and earthworm addition in the soybean cropland |
| title_full_unstemmed | The responses of CO2 emission to nitrogen application and earthworm addition in the soybean cropland |
| title_short | The responses of CO2 emission to nitrogen application and earthworm addition in the soybean cropland |
| title_sort | responses of co2 emission to nitrogen application and earthworm addition in the soybean cropland |
| topic | Bacterial community Earthworm Nitrogen application Soil respiration Soybean |
| url | https://peerj.com/articles/17176.pdf |
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