Monitoring paddy productivity in North Korea employing geostationary satellite images integrated with GRAMI-rice model
Article
Article Title | Monitoring paddy productivity in North Korea employing geostationary satellite images integrated with GRAMI-rice model |
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ERA Journal ID | 201487 |
Article Category | Article |
Authors | Yeom, Jong-min (Author), Jeong, Seungtaek (Author), Jeong, Gwanyong (Author), Ng, Chi Tim (Author), Deo, Ravinesh C. (Author) and Ko, Jonghan (Author) |
Journal Title | Scientific Reports |
Journal Citation | 8, pp. 1-15 |
Article Number | 16121 |
Number of Pages | 15 |
Year | 2018 |
Publisher | Nature Publishing Group |
Place of Publication | United Kingdom |
ISSN | 2045-2322 |
Digital Object Identifier (DOI) | https://doi.org/10.1038/s41598-018-34550-0 |
Web Address (URL) | https://www.nature.com/articles/s41598-018-34550-0 |
Abstract | To meet the growing demands of staple crops with a strategy to develop amicable strategic measures that support efficient North Korean relief policies, it is a desirable task to accurately simulate the yield of paddy (Oryza sativa), an important Asian food commodity. We aim to address this with a gridbased crop simulation model integrated with satellite imagery that enables us to monitor the crop productivity of North Korea. Vegetation Indices (VIs), solar insolation, and air temperature data are thus obtained from the Communication Ocean and Meteorological Satellite (COMS), including the reanalysis data of the Korea Local Analysis and Prediction System (KLAPS). Paddy productivities for North Korea are projected based on the bidirectional reflectance distribution function-adjusted VIs and the solar insolation using the grid GRAMI-rice model. The model is calibrated on a 500-m grid paddy field in Cheorwon, and the model simulation performance accuracy is verified for Cheorwon and Paju, located at the borders of North Korea using four years of data from 2011 to 2014. Our results show that the paddy yields are reproduced reasonably accurately within a statistically significant range of accuracy, in comparison with observation data in Cheorwon (p = 0.183), Paju (p = 0.075), and NK (p = 0.101) according to a statistical t-test procedure. We advocate that incorporating a crop model with satellite images for crop yield simulations can be utilised as a reliable estimation technique for the monitoring of crop productivity, particularly in unapproachable, data-sparse regions not only in North Korea, but globally, where estimations of paddy productivity can assist in planning of agricultural activities that support regionally amicable food security strategies. |
Keywords | North Korea; Communication, Ocean And Meteorological Satellite (COMS); Cheorwon; Paddy Yield; Geostationary Ocean Color Imager (GOCI) |
ANZSRC Field of Research 2020 | 460207. Modelling and simulation |
300403. Agronomy | |
Byline Affiliations | Korea Aerospace Research Institute, Korea |
Chonnam National University, Korea | |
School of Agricultural, Computational and Environmental Sciences | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q4yq3/monitoring-paddy-productivity-in-north-korea-employing-geostationary-satellite-images-integrated-with-grami-rice-model
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