Various responses of global heterotrophic respiration to variations in soil moisture and temperature enhance the positive feedback on atmospheric warming
Abstract The ratio of soil heterotrophic respiration to total soil respiration (Rh/Rs) is critical for soil carbon pool stability and atmosphere-biosphere exchanges, yet its spatiotemporal dynamics and responses to environmental drivers remain poorly constrained. Here, we estimate global soil and he...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2025-06-01
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| Series: | Communications Earth & Environment |
| Online Access: | https://doi.org/10.1038/s43247-025-02423-w |
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| author | Jingyu Zeng Tao Zhou Li Cao Ying Yu E. Tan Yajie Zhang Xuemei Wu Jingzhou Zhang Qi Zhang Yancheng Qu Jian Liu Peixia Liu Xia Liu Hui Luo |
| author_facet | Jingyu Zeng Tao Zhou Li Cao Ying Yu E. Tan Yajie Zhang Xuemei Wu Jingzhou Zhang Qi Zhang Yancheng Qu Jian Liu Peixia Liu Xia Liu Hui Luo |
| author_sort | Jingyu Zeng |
| collection | DOAJ |
| description | Abstract The ratio of soil heterotrophic respiration to total soil respiration (Rh/Rs) is critical for soil carbon pool stability and atmosphere-biosphere exchanges, yet its spatiotemporal dynamics and responses to environmental drivers remain poorly constrained. Here, we estimate global soil and heterotrophic respiration by integrating ground observations with machine learning models. From 1980 to 2022, annual increases reached 0.76 and 0.54 g C m⁻² yr⁻² for soil and heterotrophic respiration, respectively. Globally, Rh/Rs averaged 61.30 ± 0.54% with a decadal rise of 0.13%. Rising soil temperature enhances Rh/Rs, while soil moisture suppresses it, exhibiting stronger global-scale influence. Temperature dominates Rh/Rs regulation in forests and shrublands, whereas moisture controls this ratio in grasslands and croplands. These findings elucidate ecosystem-specific mechanisms governing Rh/Rs dynamics, advancing predictions of soil carbon-climate feedbacks essential for carbon neutrality strategies. |
| format | Article |
| id | doaj-art-3ebcee8937ea496c9afc5b0b8e5185ae |
| institution | Kabale University |
| issn | 2662-4435 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Communications Earth & Environment |
| spelling | doaj-art-3ebcee8937ea496c9afc5b0b8e5185ae2025-08-20T03:47:16ZengNature PortfolioCommunications Earth & Environment2662-44352025-06-016111210.1038/s43247-025-02423-wVarious responses of global heterotrophic respiration to variations in soil moisture and temperature enhance the positive feedback on atmospheric warmingJingyu Zeng0Tao Zhou1Li Cao2Ying Yu3E. Tan4Yajie Zhang5Xuemei Wu6Jingzhou Zhang7Qi Zhang8Yancheng Qu9Jian Liu10Peixia Liu11Xia Liu12Hui Luo13Key Laboratory of Environmental Change and Natural Disaster of Ministry of Education, Beijing Normal UniversityKey Laboratory of Environmental Change and Natural Disaster of Ministry of Education, Beijing Normal UniversityKey Laboratory of Environmental Change and Natural Disaster of Ministry of Education, Beijing Normal UniversityKey Laboratory of Environmental Change and Natural Disaster of Ministry of Education, Beijing Normal UniversityKey Laboratory of Environmental Change and Natural Disaster of Ministry of Education, Beijing Normal UniversityKey Laboratory of Environmental Change and Natural Disaster of Ministry of Education, Beijing Normal UniversityKey Laboratory of Environmental Change and Natural Disaster of Ministry of Education, Beijing Normal UniversityKey Laboratory of Environmental Change and Natural Disaster of Ministry of Education, Beijing Normal UniversityKey Laboratory of Environmental Change and Natural Disaster of Ministry of Education, Beijing Normal UniversityKey Laboratory of Environmental Change and Natural Disaster of Ministry of Education, Beijing Normal UniversityKey Laboratory of Environmental Change and Natural Disaster of Ministry of Education, Beijing Normal UniversityKey Laboratory of Environmental Change and Natural Disaster of Ministry of Education, Beijing Normal UniversityKey Laboratory of Environmental Change and Natural Disaster of Ministry of Education, Beijing Normal UniversityKey Laboratory of Environmental Change and Natural Disaster of Ministry of Education, Beijing Normal UniversityAbstract The ratio of soil heterotrophic respiration to total soil respiration (Rh/Rs) is critical for soil carbon pool stability and atmosphere-biosphere exchanges, yet its spatiotemporal dynamics and responses to environmental drivers remain poorly constrained. Here, we estimate global soil and heterotrophic respiration by integrating ground observations with machine learning models. From 1980 to 2022, annual increases reached 0.76 and 0.54 g C m⁻² yr⁻² for soil and heterotrophic respiration, respectively. Globally, Rh/Rs averaged 61.30 ± 0.54% with a decadal rise of 0.13%. Rising soil temperature enhances Rh/Rs, while soil moisture suppresses it, exhibiting stronger global-scale influence. Temperature dominates Rh/Rs regulation in forests and shrublands, whereas moisture controls this ratio in grasslands and croplands. These findings elucidate ecosystem-specific mechanisms governing Rh/Rs dynamics, advancing predictions of soil carbon-climate feedbacks essential for carbon neutrality strategies.https://doi.org/10.1038/s43247-025-02423-w |
| spellingShingle | Jingyu Zeng Tao Zhou Li Cao Ying Yu E. Tan Yajie Zhang Xuemei Wu Jingzhou Zhang Qi Zhang Yancheng Qu Jian Liu Peixia Liu Xia Liu Hui Luo Various responses of global heterotrophic respiration to variations in soil moisture and temperature enhance the positive feedback on atmospheric warming Communications Earth & Environment |
| title | Various responses of global heterotrophic respiration to variations in soil moisture and temperature enhance the positive feedback on atmospheric warming |
| title_full | Various responses of global heterotrophic respiration to variations in soil moisture and temperature enhance the positive feedback on atmospheric warming |
| title_fullStr | Various responses of global heterotrophic respiration to variations in soil moisture and temperature enhance the positive feedback on atmospheric warming |
| title_full_unstemmed | Various responses of global heterotrophic respiration to variations in soil moisture and temperature enhance the positive feedback on atmospheric warming |
| title_short | Various responses of global heterotrophic respiration to variations in soil moisture and temperature enhance the positive feedback on atmospheric warming |
| title_sort | various responses of global heterotrophic respiration to variations in soil moisture and temperature enhance the positive feedback on atmospheric warming |
| url | https://doi.org/10.1038/s43247-025-02423-w |
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