Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Analysis of Air Pollutant Emissions for Mechanized Rice Cultivation in Korea

Version 1 : Received: 26 October 2021 / Approved: 27 October 2021 / Online: 27 October 2021 (13:22:08 CEST)

A peer-reviewed article of this Preprint also exists.

Han, G.-G.; Jeon, J.-H.; Cho, Y.-J.; Kim, M.-H.; Kim, S.-M. Analysis of Air Pollutant Emissions for Mechanized Rice Cultivation in Korea. Agriculture 2021, 11, 1208. Han, G.-G.; Jeon, J.-H.; Cho, Y.-J.; Kim, M.-H.; Kim, S.-M. Analysis of Air Pollutant Emissions for Mechanized Rice Cultivation in Korea. Agriculture 2021, 11, 1208.

Journal reference: Agriculture 2021, 11, 1208
DOI: 10.3390/agriculture11121208

Abstract

In Korea, rice is a major staple grain and is mainly cultivated using various agricultural machinery. Air pollutants emitted from agricultural machinery have their origins mainly from the exhaustion of internal combustion engines. In this study, emission characteristics of five main air pollutants by European Environment Agency's Tier 1 method for rice cultivation was analyzed. Diesel is a main fuel for agricultural machinery and gasoline is generally used only for rice transplanters as a fuel in Korea. Tractors consume 46% of total fuel consumption and 56% of diesel fuel consumption. Gasoline used for rice transplanters accounts for 17% of total fuel consumption each year. Tractors and rice transplanters are emitting 82% of all total pollutants. From 2011 to 2019, the total amount of air pollutant emissions was decrease by 15%. That accounted for the reduction of rice cultivation fields in those periods. Rice transplanting operation was in charge of 42% of total emissions. Then, harrowing, harvesting, tilling, leveling, and pest control operations generated 10%, 10%, 8%, 8% and 7% of total emissions, respectively. The contribution of each air pollutant held 54% of CO, 39% of NOx, 5% of NMVOC, and 2% of TSP from the total emission inventory. The three major regions emitting air pollutants from mechanized agricultural practices were Jeollanam-do, Chungcheongnam-do, and Jeollabuk-do, which consume 55% of total fuel usage in rice farming. The total amount of air pollutant emissions from rice cultivation practices in 2019 was calculated as 8,448 Mg in Korea.

Keywords

Air Pollutant Emissions; Rice Cultivation; Agricultural Machinery; Tier 1 Methodology; Geographic Information System

Subject

EARTH SCIENCES, Atmospheric Science

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