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Scientia Silvae Sinicae ›› 2013, Vol. 49 ›› Issue (10): 74-79.doi: 10.11707/j.1001-7488.20131012

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Compatible Tree Volume and Aboveground Biomass Equations of Chinese Fir in China

Zeng Ming1, Nie Xiangyong2, Zeng Weisheng3   

  1. 1. Research Institute of Management Science & Information Engineering, Hangzhou Dianzi University Hangzhou 310018;
    2. East China Forest Inventory and Planning Institute, State Forestry Administration Hangzhou 310019;
    3. Academy of Forest Inventory and Planning, State Forestry Administration Beijing 100714
  • Received:2012-11-26 Revised:2013-04-15 Online:2013-10-25 Published:2013-11-05

Abstract:

Taking the most important coniferous species of southern China, Chinese fir (Cunninghamia lanceolata), as the study object, the compatible tree volume equations, aboveground biomass equations and biomass conversion factor functions suitable for two regions (population areas) were constructed using the error-in-variable simultaneous equation and dummy variable model approach. The results showed that two-variable models are better than one-variable models whether tree volume equation or aboveground biomass equation; the models for two populations are significantly different and the projected estimates for population A are larger than those for population B; the mean prediction errors (MPE's) of one-and two-variable aboveground biomass equations are both less than 3%, which means the aboveground biomass equations could be applied for estimation of Chinese fir forest biomass in the regions.

Key words: volume equation, biomass equation, biomass conversion factor, error-in-variable simultaneous equation, dummy variable, Cunninghamia lanceolata

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