드론영상을 활용한 논 유기물 관리 인자 조사 및 메탄가스 배출량 산정

Application of Drone Images to Investigate Biomass Management Practices and Estimation of CH4 Emissions from Paddy Fields
 

• 한국농공학회지 Volume 62 Issue 3 Pages.39-49 2020

박진석 ( Park Jinseok ) , 장성주 ( Jang Seongju ) , 김형준 ( Kim Hyungjoon ) , 홍록기 ( Hong Rokgi ) , 송인홍 ( Song Inhong )
 

Abstract
 

Rice paddy cultivation is one of the major sources in methane (CH4) emission of which accurate assessment would be a prerequisite for agricultural greenhouse gas management. Biomass treatment in paddy fields is an important factor that affects CH4 emissions and thus needs to be taken into account. The objectives of this study were to apply drone images to investigate organic matter practices and to incorporate into the estimation of CH4 emissions from paddy fields. Three study areas were selected by one from each of the three different regions of Yeongnam, Honam and Jungbu, which are the most active region in paddy cultivation. The eBee drone was used to take images of the study sites twice a year; Jul mid-season for identifying rice cultivation area; Jan for investigating rice straw management and winter crop cultivation. Based on biomass management practices, different emissions factors were assigned on an individual paddy field and CH₄ emmisions were estimated by multiplying respective areas. The ratios of rice straw application and winter crop cultivation were 1.4% and 37.2% in Hapcheon, 1.3% and 19.8% in Gimje, and 0.0% and 0.5% in Dangjin, respectively. The CH₄ emissions estimates for respective sites were 0.40 ton CH₄/year/ha, 0.34 ton CH₄/year/ha, and 0.29 ton CH₄/year/ha. On average, estimated CH₄ emissions of this study were 28.5% less than the current Tier 2 CH₄ emission estimation method.

https://doi.org/10.5389/KSAE.2020.62.3.039