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Modelling future agricultural mechanisation of major crops in China: an assessment of energy demand, land use and emissions

Modelling future agricultural mechanisation of major crops in China: an assessment of energy demand, land use and emissions

Garcia Kerdan, Ivan ORCID: 0000-0002-0566-555X, Giarola, Sara, Skinner, Ellis, Tuleu, Marin and Hawkes, Adam (2020) Modelling future agricultural mechanisation of major crops in China: an assessment of energy demand, land use and emissions. Energies, 13 (24):6636. ISSN 1996-1073 (Online) (doi:https://doi.org/10.3390/en13246636)

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Abstract

Agricultural direct energy use is responsible for about 1–2% of global emissions and is the major emitting sector for methane (2.9 GtCO2eq y−1) and nitrous oxide (2.3 GtCO2eq y−1). In the last century, farm mechanisation has brought higher productivity levels and lower land demands at the expense of an increase in fossil energy and agrochemicals use. The expected increase in certain food and bioenergy crops and the uncertain mitigation options available for non-CO2 emissions make of vital importance the assessment of the use of energy and the related emissions attributable to this sector. The aim of this paper is to present a simulation framework able to forecast energy demand, technological diffusion, required investment and land use change of specific agricultural crops. MUSE-Ag & LU, a novel energy systems-oriented agricultural and land use model, has been used for this purpose. As case study, four main crops (maize, soybean, wheat and rice) have been modelled in mainland China. Besides conventional direct energy use, the model considers inputs such as fertiliser and labour demand. Outputs suggest that the modernisation of agricultural processes in China could have the capacity to reduce by 2050 on-farm emissions intensity from 0.024 to 0.016 GtCO2eq PJcrop−1 (−35.6%), requiring a necessary total investment of approximately 319.4 billion 2017$US.

Item Type: Article
Uncontrolled Keywords: energy, agriculture, modelling, mechanisation, land use, China
Subjects: S Agriculture > S Agriculture (General)
Faculty / Department / Research Group: Faculty of Liberal Arts & Sciences
Faculty of Liberal Arts & Sciences > School of Design (DSC)
Last Modified: 17 Mar 2021 23:36
Selected for GREAT 2016: None
Selected for GREAT 2017: None
Selected for GREAT 2018: None
Selected for GREAT 2019: None
Selected for REF2021: None
URI: http://gala.gre.ac.uk/id/eprint/30907

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