Warming alters microplastic-induced soil carbon priming across diverse terrestrial ecosystems
Microplastics threaten terrestrial ecosystems, with biodegradable types potentially amplifying soil organic carbon losses through the priming effect. However, the response of microplastic-induced priming effect to global warming across ecosystems remains largely unknown. Here, we collected soils fro...
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Elsevier
2025-08-01
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| Series: | Geoderma |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0016706125002526 |
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| author | Changyi Lu Yifang Zhang An-Qi Sun Ruixia Han Qing-Lin Chen |
| author_facet | Changyi Lu Yifang Zhang An-Qi Sun Ruixia Han Qing-Lin Chen |
| author_sort | Changyi Lu |
| collection | DOAJ |
| description | Microplastics threaten terrestrial ecosystems, with biodegradable types potentially amplifying soil organic carbon losses through the priming effect. However, the response of microplastic-induced priming effect to global warming across ecosystems remains largely unknown. Here, we collected soils from farmland, grassland, and forest ecosystems across 1200 km in northeastern China, and explored the polybutylene succinate (PBS)-induced priming effect under two temperature conditions (25 ℃ and 29.5 ℃). We found that the input of PBS significantly increased soil CO2 emission irrespective of ecosystem type and temperature, accompanied by an increase lability of soil dissolved organic matter (DOM). At 25°C, PBS induced a positive priming effect across all ecosystems—the strongest in grassland soils, followed by farmland and forest, and this effect was closely linked to changes in soil nitrogen transformation potential and availability. Warming slightly increased the intensity of cumulative priming effect in farmland soils (22–32 %) but significantly decreased it from 19 % to –32 % in forest soils and from 51 % to −21 % in grassland soils. These differences may be attributed to the varying responses of soil DOM chemodiversity to warming, with newly formed DOM molecules increasing in farmland soils after PBS addition but not in forest or grassland soils. Together, these findings advance our understanding of the mechanisms driving microplastic-induced priming effect and provide insights into how microplastic pollution may alter soil carbon cycling under global warming. |
| format | Article |
| id | doaj-art-1e9aaddbd0e24fca93af460dc16f6307 |
| institution | DOAJ |
| issn | 1872-6259 |
| language | English |
| publishDate | 2025-08-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Geoderma |
| spelling | doaj-art-1e9aaddbd0e24fca93af460dc16f63072025-08-20T03:23:34ZengElsevierGeoderma1872-62592025-08-0146011741410.1016/j.geoderma.2025.117414Warming alters microplastic-induced soil carbon priming across diverse terrestrial ecosystemsChangyi Lu0Yifang Zhang1An-Qi Sun2Ruixia Han3Qing-Lin Chen4State Key Laboratory of Regional and Urban Ecology, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; Zhejiang Key Laboratory of Urban Environmental Processes and Pollution Control, CAS Haixi Industrial Technology Innovation Center in Beilun, Ningbo 315830, ChinaState Key Laboratory of Regional and Urban Ecology, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; Zhejiang Key Laboratory of Urban Environmental Processes and Pollution Control, CAS Haixi Industrial Technology Innovation Center in Beilun, Ningbo 315830, China; University of Chinese Academy of Sciences, Beijing 100049, ChinaState Key Laboratory of Regional and Urban Ecology, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; Zhejiang Key Laboratory of Urban Environmental Processes and Pollution Control, CAS Haixi Industrial Technology Innovation Center in Beilun, Ningbo 315830, ChinaState Key Laboratory of Regional and Urban Ecology, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; Zhejiang Key Laboratory of Urban Environmental Processes and Pollution Control, CAS Haixi Industrial Technology Innovation Center in Beilun, Ningbo 315830, ChinaState Key Laboratory of Regional and Urban Ecology, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; Zhejiang Key Laboratory of Urban Environmental Processes and Pollution Control, CAS Haixi Industrial Technology Innovation Center in Beilun, Ningbo 315830, China; Corresponding author at: State Key Laboratory of Regional and Urban Ecology, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China.Microplastics threaten terrestrial ecosystems, with biodegradable types potentially amplifying soil organic carbon losses through the priming effect. However, the response of microplastic-induced priming effect to global warming across ecosystems remains largely unknown. Here, we collected soils from farmland, grassland, and forest ecosystems across 1200 km in northeastern China, and explored the polybutylene succinate (PBS)-induced priming effect under two temperature conditions (25 ℃ and 29.5 ℃). We found that the input of PBS significantly increased soil CO2 emission irrespective of ecosystem type and temperature, accompanied by an increase lability of soil dissolved organic matter (DOM). At 25°C, PBS induced a positive priming effect across all ecosystems—the strongest in grassland soils, followed by farmland and forest, and this effect was closely linked to changes in soil nitrogen transformation potential and availability. Warming slightly increased the intensity of cumulative priming effect in farmland soils (22–32 %) but significantly decreased it from 19 % to –32 % in forest soils and from 51 % to −21 % in grassland soils. These differences may be attributed to the varying responses of soil DOM chemodiversity to warming, with newly formed DOM molecules increasing in farmland soils after PBS addition but not in forest or grassland soils. Together, these findings advance our understanding of the mechanisms driving microplastic-induced priming effect and provide insights into how microplastic pollution may alter soil carbon cycling under global warming.http://www.sciencedirect.com/science/article/pii/S0016706125002526Microplastic pollutionGlobal climate changeSoil organic matter decompositionCO2 emissionStable C isotopeDissolved organic matter |
| spellingShingle | Changyi Lu Yifang Zhang An-Qi Sun Ruixia Han Qing-Lin Chen Warming alters microplastic-induced soil carbon priming across diverse terrestrial ecosystems Geoderma Microplastic pollution Global climate change Soil organic matter decomposition CO2 emission Stable C isotope Dissolved organic matter |
| title | Warming alters microplastic-induced soil carbon priming across diverse terrestrial ecosystems |
| title_full | Warming alters microplastic-induced soil carbon priming across diverse terrestrial ecosystems |
| title_fullStr | Warming alters microplastic-induced soil carbon priming across diverse terrestrial ecosystems |
| title_full_unstemmed | Warming alters microplastic-induced soil carbon priming across diverse terrestrial ecosystems |
| title_short | Warming alters microplastic-induced soil carbon priming across diverse terrestrial ecosystems |
| title_sort | warming alters microplastic induced soil carbon priming across diverse terrestrial ecosystems |
| topic | Microplastic pollution Global climate change Soil organic matter decomposition CO2 emission Stable C isotope Dissolved organic matter |
| url | http://www.sciencedirect.com/science/article/pii/S0016706125002526 |
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