利用西藏自治区 2 0 0 1年森林资源连续清查的 5 5 4个有林地和疏林样地 ,建立了冷杉、云杉、柏木、松类、栎类、阔叶类等 6个树种组的相对树高曲线模型。经检验 ,6个树种组的模型 ,用于林分材积估计的总相对误差有 4个在± 1%以内 ,误差最大的柏木也未超过± 5 % ,预估精度相当高。所建模型可广泛应用于西藏自治区各类森林资源清查 The relatives of 6 tree species groups, including fir, spruce, cypress, pine, oak and broadleaf, were established by using the 544 forestland and sparse forest plots continuously searched for by forest resources in the Tibet Autonomous Region in 2001 Tree height curve model. After testing, the model of 6 tree species groups, the total relative error for the stand volume estimation is 4 within ± 1%, and the error of the largest cedar does not exceed ± 5%, the prediction accuracy is quite high. The model can be widely used in various types of forest resources inventory in Tibet Autonomous Region