A Study on the Prediction of Rice Yields of Agricultural Use in Saemangeum Reclaimed Land Using Satellite Imagery and Deep Learning

Sooyoung Lim; Eunhye Ha; Gunhak Lee

doi:10.22776/kgs.2023.58.6.585

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2023 Vol.58, Issue 6 Preview Page Next Page

Research Article

A Study on the Prediction of Rice Yields of Agricultural Use in Saemangeum Reclaimed Land Using Satellite Imagery and Deep Learning 위성영상과 딥러닝을 이용한 새만금 간척지의 벼 수확량 예측 연구

31 December 2023. pp. 585-598

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Abstract

As 30 years have passed since the start of the Saemanguem Comprehensive Development Plan, it is time for a diagnosis of the Saemangeum project. In particular, the agricultural land in Saemangeum is a major goal of the first phase of the development plan, which was most recently completed (2020), and agricultural activities have recently begun in the temporary agricultural lease area. In this context, this study aims to present a deep neural network model that can provide an assessment of the potential for agricultural land creation and food production in regions designated for temporary farming from agricultural land in Saemangeum. For this purpose, the Enhanced Vegetation Index (EVI), Vegetation Soil Salinity Index (VSSI), Land Surface Water Index (LSWI) constructed from satellite images, and meteorological variables were used to construct a dataset that reflects spatiotemporal variation in paddy land cover across the country. As a result of the validation of the model, the RMSE (Root Mean Square Error) was 7.5901 (t) and R2 was 0.9980 which demonstrated excellent performance compared to previous studies of several machine learning models such as Random Forest, GBDT, Adaboost, and Linear Regression. When applied to the region designated as temporary farming areas, it demonstrated an average expected yield of 415kg per 10a, which was lower than the national average rice yield standard of 518kg per 10a in 2022. This study is expected to be used for the future sustainable land use plan for Saemangeum and policymaking, by specifically showing the potential utilization of agricultural lands in Saemangeum through satellite images and a deep learning approach.

Keywords

satellite imagery

deep learning

deep neural network

rice yield

Saemangeum reclaimed lands

새만금 종합개발계획 착공 30년이 지난 현재, 새만금 사업에 대한 진단이 필요한 시점이다. 특히 새만금의 농생명용지는 가장 최근 완료 시점(2020년)이 도래한 1단계 개발계획의 주요 목표이며, 최근 해당 용지 내 임시영농 임대 구역에서 농업 활동이 시작되었다. 이에 본 연구에서는 새만금 간척지 임시영농 구역의 농업용지 조성 및 식량 생산 가능성에 대한 평가를 위한 심층신경망 모델을 제시하고자 한다. 이를 위해 전국의 논 토지피복에 대해 시공간적 변이를 반영하는 데이터셋을 구성하였고, 위성영상 기반 강화식생지수(EVI), 식생토양염분지수(VSSI), 지표수분지수(LSWI) 및 기상 변수를 사용하여 훈련을 진행하였다. 기존 연구에서 제시한 머신러닝 모델(Random Forest, GBDT, Adaboost, Linear regression)들과 성능을 비교한 결과, 본 연구에서 제안하는 DNN 모델이 RMSE 7.5901(t), R² 0.9980로 우수한 성능을 보였다. 이를 새만금 임시영농 구역에 적용한 결과, 2022년 기준 전국 평균 벼 수확량인 518kg/10a에 못 미치는 415kg/10a의 2023년 예측 수확량을 나타내었다. 본 연구는 위성영상 데이터와 딥러닝을 통해 새만금 간척지 농업용지의 잠재적 활용성을 보다 구체적으로 진단함으로써 향후 지속가능한 새만금 토지이용 계획과 정책 수립에 기여할 것으로 기대된다.

키워드

위성영상

딥러닝

심층신경망

벼 수확량

새만금 간척지

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Information

Publisher :The Korean Geographical Society
Publisher(Ko) :대한지리학회
Journal Title :Journal of the Korean Geographical Society
Journal Title(Ko) :대한지리학회지
Volume : 58
No :6
Pages :585-598
Received Date : 2023-09-25
Revised Date : 2023-11-09
Accepted Date : 2023-11-27
DOI :https://doi.org/10.22776/kgs.2023.58.6.585

Journal of the Korean Geographical Society ISSN:1225-6633(Print) 대한지리학회지

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