Potential soil organic carbon sequestration vis-a-vis methane emission in lowland rice agroecosystem.

Autor: Das SR; ICAR-National Rice Research Institute, Cuttack, Odisha, 753 006, India., Nayak BK; ICAR-National Rice Research Institute, Cuttack, Odisha, 753 006, India., Dey S; Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, Nadia, West Bengal, 741252, India., Sarkar S; ICAR-National Rice Research Institute, Cuttack, Odisha, 753 006, India., Chatterjee D; ICAR-National Rice Research Institute, Cuttack, Odisha, 753 006, India. dibyenducha@gmail.com., Saha S; ICAR-Research Complex for North Eastern Hill Region, Tadong, Sikkim, 737102, India., Sarkar D; Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, Nadia, West Bengal, 741252, India., Pradhan A; ICAR-National Rice Research Institute, Cuttack, Odisha, 753 006, India., Saha S; ICAR-National Rice Research Institute, Cuttack, Odisha, 753 006, India., Nayak AK; ICAR-National Rice Research Institute, Cuttack, Odisha, 753 006, India.
Jazyk: angličtina
Zdroj: Environmental monitoring and assessment [Environ Monit Assess] 2023 Aug 26; Vol. 195 (9), pp. 1099. Date of Electronic Publication: 2023 Aug 26.
DOI: 10.1007/s10661-023-11673-0
Abstrakt: Mitigating the atmospheric greenhouse effect while enhancing the inherent soil quality and productive capacity is possible through soil carbon (C) sequestration, which has a significant potential to counteract the adverse effects of agroecosystem level C emission through natural and anthropogenic means. Although rice is the most important food in India, feeding more than 60% of the country's population, it is commonly blamed for significant methane (CH 4 ) emissions that accelerate climate change. Higher initial soil organic matter concentrations would create more CH 4 under the flooded soil conditions, as reducible soil C is a prerequisite for CH 4 generation. In India, rice is generally cultivated in lowlands under continuous flooding. Less extensive organic matter breakdown in lowland rice agroecosystems often significantly impacts the dynamics of soil active and passive C pools. Change from conventional to conservation agriculture might trap a significant quantity of SOC. The study aims to investigate the potential of rice-based soils to sequester C and reduce the accelerated greenhouse effects through modified farming practices, such as crop residue retention, crop rotation, organic farming, varietal selection, conservation agriculture, integrated nutrient management, and water management. Overall, lowland rice agroecosystems can sequester significant amounts of SOC, but this potential must be balanced against the potential for CH 4 emissions. Management practices that reduce CH 4 emissions while increasing soil C sequestration should be promoted and adopted to maximize the sustainability of rice agroecosystems. This review is important for understanding the effectiveness of the balance between SOC sequestration and CH 4 emissions in lowland rice agroecosystems for adopting sustainable agricultural practices in the context of climate change.
(© 2023. The Author(s), under exclusive licence to Springer Nature Switzerland AG.)
Databáze: MEDLINE
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