太行山南麓栓皮栎林生物量和材积关系的探讨

目的]为太行山地区以重量为计测单位的森林测计提供基础,方便该地区森林资源的清查。方法]根据太行山南麓栓皮栎林的样方调查数据和生物量实测资料,通过回归分析,考察栓皮栎各器官生物量(W)与胸径(D)和树高(H)之间的关系。并探讨栓皮栎材积与生物量间的关系,建立用材积推算栓皮栎各组分生物量的回归模型。结果]栓皮栎各器官生物量(W)与胸径(D)和树高(H)之间存在显著的线性相关关系,即:Ws=0.932 6D0.590 9(r=0.879 6);Wb=0.099 58D0.048 9(r=0.970 2);Wl=0.011 3(D2H)0.718 2(r=0.982 1);Wr=0.538 1(D2H)0.299 6(r=0.945 6)。栓皮栎可通过以下方程来进行材积和生物量间的换算:Ws=-62.280 2+30.640 9V(r=0.912 8);Wb=-35.678 3+15.41V(r=0.966 8);Wl=0.097 4e15.909 4V(r=0.928 7);Wr=9.531e2.087 6V(r=0.970 1)。结论]此回归模型的建立方便了该地区森林资源的清查,有着使用简便、省时省力、实用性强、高精度等特点。

Discussion on the Relationship Between the Biomass and Volmne of Quercus variabilis Forest at the Southern Foot of Taihang Mountain

Objective] The research aimed to provide the foundation for the forest measurement in the area of Taihang mountain with weight as measurement unit and give convenience for the forest resources inventory in this area.Method] According to the data from the investigation in sample plots and the observed biomass of Quercus variabilis forest at the southern foot of Taihang mountain,the relationship between the biomass(W)of each organ and diameter at breast height(D),tree height(H)of Q.variabilis were studied by regression analysis.The relationship between the volume and biomass of Q.variabilis was discussed to set up a regression model for calculating the biomass of each component in Q.variabilis by using volume.Result] There were significant linear correlations between the biomass of each organ and diameter at breast height(D),tree height(H)of Q.variabilis as Ws=0.932 6D0.590 9(r=0.879 6);Wb=0.099 58D0.048 9(r=0.970 2);Wl=0.011 3(D2H)0.718 2(r=0.982 1);Wr=0.538 1(D2H)0.299 6(r=0.945 6).The conversion between the volume and biomass of Q.variabilis could be made by the following equations as Ws=-62.280 2 30.640 9V(r=0.912 8);Wb=-35.678 3 15.41V(r=0.966 8);Wl=0.097 4e15.909 4V(r=0.928 7);Wr=9.531e2.087 6V(r=0.970 1).Conclusion] The establishment of this regression model gave great convenience to the forest resources inventory and had the characteristics such as being simple and convenient to operate,saved time and labor,strong practicality and high precision.