Journal of The Korean Society of Agricultural Engineers (한국농공학회논문집)

The Korean Society of Agricultural Engineers (한국농공학회)
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Comparison between Spatial Interpolation Methods of Temperature Data for Garlic Cultivation

마늘 재배적지분석을 위한 기온자료 공간보간기법 비교

  • 김용완 (경상대학교 대학원) ;
  • 홍석영 (국립농업과학원 농업환경부) ;
  • 장민원 (경상대학교 농업생명과학대학 지역환경기반공학과, 경상대학교 농업생명과학연구원)
  • Received : 2011.05.27
  • Accepted : 2011.08.08
  • Published : 2011.09.30
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Abstract

The objective of this study is to decide a spatial interpolation method on temperature data for the suitability analysis of garlic cultivation. In Korea, garlic is the second most cultivated condiment vegetable after red pepper. Nowadays warm-temperate garlic faces potential shift of its arable area according to warmer temperature in the Korean Peninsula, and the change can be drawn with the precise temperature map derived from interpolation on point-measured data. To find the preferable interpolation method in cases of germination and vegetative period of the garlic, different approaches were tested as follows: Inverse Distance Weighted (IDW), Spline, Ordinary Kriging (OK), and Universal Kriging (UK). As a result, IDW and UK show the lowest root mean square errors as for the germination and vegetative seasons, respectively. However, statistically significant difference was not revealed among the applied methods regarding the germinating period. Eventually this will contribute to mapping the suitable lands for the cultivation of warm-temperate garlic reasonably.

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References

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