Korean Journal of Soil Science and Fertilizer (한국토양비료학회지)

Korean Society of Soil Science and Fertilizer (한국토양비료학회)
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Status of Rice Paddy Field and Weather Anomaly in the Spring of 2015 in DPRK

  • Hong, Suk Young (Climate Change and Agroecology Division, National Academy of Agricultural Science, RDA) ;
  • Park, Hye-Jin (Department of Earth Environment System, Pusan National University) ;
  • Jang, Keunchang (Center for Forest & Climate Change, Korea Forest Research Institute) ;
  • Na, Sang-Il (Climate Change and Agroecology Division, National Academy of Agricultural Science, RDA) ;
  • Baek, Shin-Chul (Climate Change and Agroecology Division, National Academy of Agricultural Science, RDA) ;
  • Lee, Kyung-Do (Climate Change and Agroecology Division, National Academy of Agricultural Science, RDA) ;
  • Ahn, Joong-Bae (Department of Earth Environment System, Pusan National University)
  • Received : 2015.09.21
  • Accepted : 2015.10.13
  • Published : 2015.10.31
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Abstract

To understand the impact of 2015 spring drought on crop production of DPRK (Democratic People's Republic of Korea), we analyzed satellite and weather data to produce 2015 spring outlook of rice paddy field and rice growth in relation to weather anomaly. We defined anomaly of 2015 for weather and NDVI in comparison to past 5 year-average data. Weather anomaly layers for rainfall and mean temperature were calculated based on 27 weather station data. Rainfall in late April, early May, and late May in 2015 was much lower than those in average years. NDVI values as an indicator of rice growth in early June of 2015 was much lower than in 2014 and the average years. RapidEye and Radarsat-2 images were used to monitor status of rice paddy irrigation and transplanting. Due to rainfall shortage from late April to May, rice paddy irrigation was not favorable and rice planting was not progressed in large portion of paddy fields until early June near Pyongyang. Satellite images taken in late June showed rice paddy fields which were not irrigated until early June were flooded, assuming that rice was transplanted after rainfall in June. Weather and NDVI anomaly data in regular basis and timely acquired satellite data can be useful for grasping the crop and land status of DPRK, which is in high demand.

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References

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