Carbon footprint and driving forces of saline agriculture in coastally reclaimed areas of eastern China: a survey of four staple crops

Li, Jianguo, Yang, Wenhui, Wang, Yi, Li, Qiang, Liu, Lili and Zhang, Zhongqi (2018) Carbon footprint and driving forces of saline agriculture in coastally reclaimed areas of eastern China: a survey of four staple crops. Sustainability, 10 (928). ISSN 2071-1050

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Abstract

Carbon emissions have always been a key issue in agricultural production. Because of the specific natural factors in the soil of saline agriculture, there are distinctive characteristics in saline agricultural production as compared with traditional agricultural zones. Here, we have adopted the theory of life cycle assessment, and employed the Intergovernmental Panel on Climate Change (IPCC) greenhouse gas (GHG) field calculation to estimate the GHG emissions, derived from the staple crop productions (i.e., barley, wheat, corn and rice). In addition, our study further analyzed the main driving forces of carbon emissions, and proposed some effective measures to reduce them. Our results have showed that: (1) Carbon footprint from the four crops in the study area varies from 0.63 to 0.77 kg CO2 eq•kg-1, which is higher than that from traditional agriculture; (2) GHG emissions from Fertilizer-Nitrogen (N) manufacture and inorganic N application have contributed to the greatest percentage of carbon footprint. Compared with traditional agricultural zones, fertilizer-N application and paddy irrigation involved with crop productions have overall greater contributions to carbon footprint; (3) Carbon emissions from saline agriculture can be reduced significantly by planting-breeding combination to reduce the amount of N fertilizer application, improving the traditional rotation system, and developing water-saving agriculture and ecological agriculture.

Item Type: Article
Keywords: Saline agriculture; coastally reclaimed area; staple crops; life cycle assessment; carbon footprint; Greenhouse Gas emissions
Schools and Departments: School of Global Studies > Geography
Depositing User: Sharon Krummel
Date Deposited: 22 Mar 2018 10:39
Last Modified: 28 Mar 2018 10:27
URI: http://sro.sussex.ac.uk/id/eprint/74587

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