Plastic footprint deteriorates dryland carbon footprint across soil–plant-atmosphere continuum
Plastic fragments are widely found in the soil profile of terrestrial ecosystems, forming plastic footprint and posing increasing threat to soil functionality and carbon (C) footprint. It is unclear how plastic footprint affects C cycling, and in particularly permanent C sequestration. Integrated fi...
| Main Authors: | , , , , , , , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2024-04-01
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| Series: | Environment International |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0160412024002186 |
| _version_ | 1827275593784229888 |
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| author | Meng-Ying Li Wei Wang Yue Ma Yinglong Chen Hong-Yan Tao Ze-Ying Zhao Peng-Yang Wang Li Zhu Baoluo Ma Yun-Li Xiao Shi-Sheng Li Muhammad Ashraf Wen-Ying Wang Xiao-Bin Xiong Ying Zhu Jin-Lin Zhang Momena Irum Ya-Jie Song Levis Kavagi You-Cai Xiong |
| author_facet | Meng-Ying Li Wei Wang Yue Ma Yinglong Chen Hong-Yan Tao Ze-Ying Zhao Peng-Yang Wang Li Zhu Baoluo Ma Yun-Li Xiao Shi-Sheng Li Muhammad Ashraf Wen-Ying Wang Xiao-Bin Xiong Ying Zhu Jin-Lin Zhang Momena Irum Ya-Jie Song Levis Kavagi You-Cai Xiong |
| author_sort | Meng-Ying Li |
| collection | DOAJ |
| description | Plastic fragments are widely found in the soil profile of terrestrial ecosystems, forming plastic footprint and posing increasing threat to soil functionality and carbon (C) footprint. It is unclear how plastic footprint affects C cycling, and in particularly permanent C sequestration. Integrated field observations (including 13C labelling) were made using polyethylene and polylactic acid plastic fragments (low-, medium- and high-concentrations as intensifying footprint) landfilling in soil, to track C flow along soil–plant-atmosphere continuum (SPAC). The result indicated that increased plastic fragments substantially reduced photosynthetic C assimilation (p < 0.05), regardless of fragment degradability. Besides reducing C sink strength, relative intensity of C emission increased significantly, displaying elevated C source. Moreover, root C fixation declined significantly from 21.95 to 19.2 mg m−2, and simultaneously root length density, root weight density, specific root length and root diameter and surface area were clearly reduced. Similar trends were observed in the two types of plastic fragments (p > 0.05). Particularly, soil aggregate stability was significantly lowered as affected by plastic fragments, which accelerated the decomposition rate of newly sequestered C (p < 0.05). More importantly, net C rhizodeposition declined averagely from 39.77 to 29.41 mg m−2, which directly led to significant decline of permanent C sequestration in soil. Therefore, increasing plastic footprint considerably worsened C footprint regardless of polythene and biodegradable fragments. The findings unveiled the serious effects of plastic residues on permanent C sequestration across SPAC, implying that current C assessment methods clearly overlook plastic footprint and their global impact effects. |
| first_indexed | 2024-04-24T12:31:35Z |
| format | Article |
| id | doaj.art-4150cedeb4f349e09c0baa8fc35e89c5 |
| institution | Directory Open Access Journal |
| issn | 0160-4120 |
| language | English |
| last_indexed | 2025-03-22T06:43:22Z |
| publishDate | 2024-04-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Environment International |
| spelling | doaj.art-4150cedeb4f349e09c0baa8fc35e89c52024-04-24T04:50:42ZengElsevierEnvironment International0160-41202024-04-01186108632Plastic footprint deteriorates dryland carbon footprint across soil–plant-atmosphere continuumMeng-Ying Li0Wei Wang1Yue Ma2Yinglong Chen3Hong-Yan Tao4Ze-Ying Zhao5Peng-Yang Wang6Li Zhu7Baoluo Ma8Yun-Li Xiao9Shi-Sheng Li10Muhammad Ashraf11Wen-Ying Wang12Xiao-Bin Xiong13Ying Zhu14Jin-Lin Zhang15Momena Irum16Ya-Jie Song17Levis Kavagi18You-Cai Xiong19State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, College of Ecology, Lanzhou University, Lanzhou 730000, ChinaState Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, College of Ecology, Lanzhou University, Lanzhou 730000, ChinaState Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, College of Ecology, Lanzhou University, Lanzhou 730000, ChinaThe UWA Institute of Agriculture, and School of Agriculture and Environment, The University of Western Australia, Perth 6001, WA, AustraliaState Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, College of Ecology, Lanzhou University, Lanzhou 730000, ChinaState Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, College of Ecology, Lanzhou University, Lanzhou 730000, ChinaState Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, College of Ecology, Lanzhou University, Lanzhou 730000, ChinaState Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, College of Ecology, Lanzhou University, Lanzhou 730000, China; College of Biology and Agricultural Resources, Huanggang Normal University, Huanggang 438000, ChinaOttawa Research and Development Center, Agriculture and Agri-Food Canada, Ottawa K1A 0C6, CanadaCollege of Biology and Agricultural Resources, Huanggang Normal University, Huanggang 438000, ChinaCollege of Biology and Agricultural Resources, Huanggang Normal University, Huanggang 438000, ChinaInstitute of Molecular Biology and Biotechnology, The University of Lahore, Lahore 54000, PakistanSchool of Life Sciences, Qinghai Normal University, Xining 810008, ChinaState Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, College of Ecology, Lanzhou University, Lanzhou 730000, ChinaState Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, College of Ecology, Lanzhou University, Lanzhou 730000, ChinaCollege of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730000, ChinaState Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, College of Ecology, Lanzhou University, Lanzhou 730000, ChinaGlobal Institute of Eco-environment for Sustainable Development (GIESD), 40 Pleasant Street, New Haven, CT 06511, USADivision of Ecosystems and Biodiversity, United Nations Environment Programme, Nairobi 00100, KenyaState Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, College of Ecology, Lanzhou University, Lanzhou 730000, China; Corresponding authors.Plastic fragments are widely found in the soil profile of terrestrial ecosystems, forming plastic footprint and posing increasing threat to soil functionality and carbon (C) footprint. It is unclear how plastic footprint affects C cycling, and in particularly permanent C sequestration. Integrated field observations (including 13C labelling) were made using polyethylene and polylactic acid plastic fragments (low-, medium- and high-concentrations as intensifying footprint) landfilling in soil, to track C flow along soil–plant-atmosphere continuum (SPAC). The result indicated that increased plastic fragments substantially reduced photosynthetic C assimilation (p < 0.05), regardless of fragment degradability. Besides reducing C sink strength, relative intensity of C emission increased significantly, displaying elevated C source. Moreover, root C fixation declined significantly from 21.95 to 19.2 mg m−2, and simultaneously root length density, root weight density, specific root length and root diameter and surface area were clearly reduced. Similar trends were observed in the two types of plastic fragments (p > 0.05). Particularly, soil aggregate stability was significantly lowered as affected by plastic fragments, which accelerated the decomposition rate of newly sequestered C (p < 0.05). More importantly, net C rhizodeposition declined averagely from 39.77 to 29.41 mg m−2, which directly led to significant decline of permanent C sequestration in soil. Therefore, increasing plastic footprint considerably worsened C footprint regardless of polythene and biodegradable fragments. The findings unveiled the serious effects of plastic residues on permanent C sequestration across SPAC, implying that current C assessment methods clearly overlook plastic footprint and their global impact effects.http://www.sciencedirect.com/science/article/pii/S0160412024002186Plastic footprintDryland C footprintRoot traitsPermanent C sequestrationSPAC |
| spellingShingle | Meng-Ying Li Wei Wang Yue Ma Yinglong Chen Hong-Yan Tao Ze-Ying Zhao Peng-Yang Wang Li Zhu Baoluo Ma Yun-Li Xiao Shi-Sheng Li Muhammad Ashraf Wen-Ying Wang Xiao-Bin Xiong Ying Zhu Jin-Lin Zhang Momena Irum Ya-Jie Song Levis Kavagi You-Cai Xiong Plastic footprint deteriorates dryland carbon footprint across soil–plant-atmosphere continuum Environment International Plastic footprint Dryland C footprint Root traits Permanent C sequestration SPAC |
| title | Plastic footprint deteriorates dryland carbon footprint across soil–plant-atmosphere continuum |
| title_full | Plastic footprint deteriorates dryland carbon footprint across soil–plant-atmosphere continuum |
| title_fullStr | Plastic footprint deteriorates dryland carbon footprint across soil–plant-atmosphere continuum |
| title_full_unstemmed | Plastic footprint deteriorates dryland carbon footprint across soil–plant-atmosphere continuum |
| title_short | Plastic footprint deteriorates dryland carbon footprint across soil–plant-atmosphere continuum |
| title_sort | plastic footprint deteriorates dryland carbon footprint across soil plant atmosphere continuum |
| topic | Plastic footprint Dryland C footprint Root traits Permanent C sequestration SPAC |
| url | http://www.sciencedirect.com/science/article/pii/S0160412024002186 |
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