【摘要】 本文对VAR模型(lnY=lna+blnX+cX)在估测华北落叶松人工林生物量方面的应用价值进行了探讨.残差分析表明,该相对生长关系模型一般优于C R模型(lnY=lna+blnX).更多还原

【Abstract】 This paper gives an approach to the applied value of the VAR model (lnY=lna+blaX+cX) for estimating biomass of the Larix principis-rupprechtii artificial forests. The VAR model allows for a variable allometric ratio that can change in a linear fashion with increase of stem size. Residual analysis shows that it significantly improves the estimation of bolewood, bolebark, live branch and leaf biomass, and provides less biased estimates as compared with the CAR model (lny = lna+61nX). The VAR model is generally superior than the CAR model.更多还原