Based on the investigation data of 30 plots of Phyllostachys nuda, density effect model of Phyllostachys nuda was built, it:W=0. 04192347N1.206841D1.833925,R=0. 96,F=141, R1 = 0. 86, R2 =0.88.

• 本文运用石竹产区内30块固定标准地的调查材料，配制竹林密度效应模型W=0．04192347N1.；206841D1