Journal of agriculture & life science (농업생명과학연구)

Institute of Agriculture & Life Science, Gyeongsang National University (경상대학교 농업생명과학연구원)
권호 표지

Comparison of Two Taper Functions in Estimating the Volume of Chamaecyparis obtusa Trees Using Centroid Method

중심치 방법을 이용한 편백림 간재적 추정을 위한 간곡선식의 비교

  • Lee, Young-Jin (Dept. of Forest Resources, Kongju National University) ;
  • Kim, Hyung-Ho (Div. of Environmental Forest Resources(Institute of Agric. and Life Sci.), Gyeongsang National Univ.)
  • 이영진 (공주대학교 산림자원학과) ;
  • 김형호 (경상대학교 환경산림과학부(농업생명과학연구원))
  • Received : 2008.10.27
  • Accepted : 2009.02.20
  • Published : 2009.02.28

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Abstract

This study was conducted to compare volumes estimated from two taper functions and observed volumes of Chamaecyparis obtusa trees to evaluate accuracy and precision of centroid method. Centroid volume estimates were also compared with volume estimates from existing Forest Resources Evaluation and Prediction Program. The results of this study showed that Gregoire's simple taper function produced unbiased volume estimates while the others were biased. Volume estimates from the Forest Resources Evaluation and Prediction Program were also biased when applied in the Jangseong National Forest regions. These results suggested that the centroid method could produce reliable stem volumes of trees when no other reliable stem volume equations exist.

Keywords

Acknowledgement

Supported by : Korea Research Foundation

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