Articles | Volume 15, issue 4
https://doi.org/10.5194/essd-15-1501-2023
https://doi.org/10.5194/essd-15-1501-2023
Data description paper
 | 
04 Apr 2023
Data description paper |  | 04 Apr 2023

Twenty-meter annual paddy rice area map for mainland Southeast Asia using Sentinel-1 synthetic-aperture-radar data

Chunling Sun, Hong Zhang, Lu Xu, Ji Ge, Jingling Jiang, Lijun Zuo, and Chao Wang

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Cited articles

Bridhikitti, A. and Overcamp, T. J.: Estimation of Southeast Asian rice paddy areas with different ecosystems from moderate-resolution satellite imagery, Agr. Ecosyst. Environ., 146, 113–120, https://doi.org/10.1016/j.agee.2011.10.016, 2012. 
Chang, L., Chen, Y.-T., Chan, Y.-L., and Wu, M.-C.: A Novel Feature for Detection of Rice Field Distribution Using Time Series SAR Data, IGARSS 2020–2020 IEEE International Geoscience and Remote Sensing Symposium, 26 September–2 October 2020, Waikoloa, HI, USA, 4866–4869, https://doi.org/10.1109/igarss39084.2020.9323278, 2020. 
Chen, C. F., Son, N. T., and Chang, L. Y.: Monitoring of rice cropping intensity in the upper Mekong Delta, Vietnam using time-series MODIS data, Adv. Space Res., 49, 292–301, https://doi.org/10.1016/j.asr.2011.09.011, 2012. 
Chen, C. F., Son, N. T., Chen, C. R., Chang, L. Y., and Chiang, S. H.: Rice Crop Mapping Using Sentinel-1a Phenological Metrics, Int. Arch. Photogramm., XLI-B8, 863–865, https://doi.org/10.5194/isprsarchives-XLI-B8-863-2016, 2016. 
Clauss, K., Yan, H., and Kuenzer, C.: Mapping Paddy Rice in China in 2002, 2005, 2010 and 2014 with MODIS Time Series, Remote Sens.-Basel, 8, 434, https://doi.org/10.3390/rs8050434, 2016. 
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Short summary
Over 90 % of the world’s rice is produced in the Asia–Pacific region. In this study, a rice-mapping method based on Sentinel-1 data for mainland Southeast Asia is proposed. A combination of spatiotemporal features with strong generalization is selected and input into the U-Net model to obtain a 20 m resolution rice area map of mainland Southeast Asia in 2019. The accuracy of the proposed method is 92.20 %. The rice area map is concordant with statistics and other rice area maps.
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