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Quantifying direct CO2 emissions from organic manure fertilizer and maize residual roots using 13C labeling technique: A field study

文献类型：期刊论文

作者Liu, Liting2; Ouyang, Zhu2; Hu, Chunsheng1; Li, Jing2
刊名SCIENCE OF THE TOTAL ENVIRONMENT
出版日期2024
卷号906页码:10
ISSN号0048-9697
关键词Organic fertilizer Soil respiration CH4 Stable isotope tracing Corn
DOI10.1016/j.scitotenv.2023.167603
通讯作者Li, Jing(jingli@igsnrr.ac.cn)
英文摘要Organic manure compost offers benefits like enhanced crop yield, improved soil health, and increased soil carbon storage. However, its application might elevate direct CO2 emissions from organic matter decomposition. Beyond manure compost, significant sources of CO2 emissions in agricultural settings are from residual roots and root exudates of pre-crops, and soil carbon. Quantifying the contribution of these sources to CO2 emissions is crucial for maximizing carbon reduction in crop-livestock systems, yet field studies have not assessed this contribution. Our study at the Yucheng field station in Shandong Province, China employed 13C labeling on summer maize to generate 13C-labeled manure compost and maize root, which is used to differentiate CO2 emissions from these sources. Our results revealed novel insights into the magnitude and patterns of CO2 emissions from these sources. The emission pattern of 13C-CO2 derived from manure compost, root and root exudates was similar, but the magnitude differed. Specifically, manure compost accounted for 5 % of the total CO2 emissions, while residual roots and root exudates contributed 2 % and 57 %, respectively, suggesting a higher labile carbon content in root exudates. The remaining 36 % of CO2 emissions was derived from the soil and other sources. CO2 emission factors were 6 % for manure compost, 12 % for roots, and 2 % for root exudates. By quantifying the direct emissions from manure compost, residual roots, root exudates, and soil, our study highlights the dominant role of managing root exudates in overall CO2 emissions. These findings can guide targeted carbon reduction strategies, emphasizing the importance of managing root exudates and understanding the relative innocuousness of manure compost applications in the context of CO2 emissions. This novel research quantifies the direct contribution of individual manure compost to CO2 emissions, providing valuable data for carbon cycle models and improving understanding of CO2 contributions from new carbon inputs.
WOS关键词NITROUS-OXIDE ; ALPINE MEADOW ; CARBON ; SOIL ; FLUX
资助项目Strategic Priority Research Program of the Chinese Academy of Sciences[XDA26050202] ; National Key Research and Development Program of China[2021YFD190090503]
WOS研究方向Environmental Sciences & Ecology
语种英语
出版者ELSEVIER
WOS记录号WOS:001099790600001
资助机构Strategic Priority Research Program of the Chinese Academy of Sciences ; National Key Research and Development Program of China
源URL[http://ir.igsnrr.ac.cn/handle/311030/200054]  
专题中国科学院地理科学与资源研究所
通讯作者Li, Jing
作者单位1.Chinese Acad Sci, Inst Genet & Dev Biol, Ctr Agr Resources Res, Key Lab Agr Water Resources, 286 Huaizhong Rd, Shijiazhuang 050021, Peoples R China
2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, CAS Engn Lab Yellow River Delta Modern Agr, Beijing 100101, Peoples R China
推荐引用方式
GB/T 7714		 Liu, Liting,Ouyang, Zhu,Hu, Chunsheng,et al. Quantifying direct CO2 emissions from organic manure fertilizer and maize residual roots using 13C labeling technique: A field study[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2024,906:10.
APA Liu, Liting,Ouyang, Zhu,Hu, Chunsheng,&Li, Jing.(2024).Quantifying direct CO2 emissions from organic manure fertilizer and maize residual roots using 13C labeling technique: A field study.SCIENCE OF THE TOTAL ENVIRONMENT,906,10.
MLA Liu, Liting,et al."Quantifying direct CO2 emissions from organic manure fertilizer and maize residual roots using 13C labeling technique: A field study".SCIENCE OF THE TOTAL ENVIRONMENT 906(2024):10.

入库方式： OAI收割

来源：地理科学与资源研究所

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