Abstract:According to the study on the relation between stand volume and biomass of Chi-nese fir plantation,this paper developed the integrated stand forecast models for stand biomass based on the integrated stand growth mode (ISGM) of Chinese fir plantation in Huitong.The models are Wi=a1EXP{a2La3[1一EXP(-a4Sa5o>)a6FH} i=1,2,3,4,5 The precision of the models is greater than 96% except for root.Through the t test,there is |t|0.05(55) for all organs.Thinking of no distinct difference between the esti-mative value and obser red data,the models can meet the needs of forest management.