不同造林方式小黑杨生物量模型研究

摘要

以青年林场不同造林方式的小黑杨为研究对象，采用树干解析和收割的方法获取插条、母根和萌蘖造林的林分生物量实测数据，利用 SPSS18.0拟合3种造林方式的小黑杨生物量模型，其结果表明：插条和母根造林的小黑杨选取以 D 1.3自变量的 Logistic 方程，萌蘖方式造林的小黑杨选取以 D 1.3为自变量的幂函数进行生物量估算可以满足精度要求。%Taking Populus simonii ×P .nigra afforested by different methods in Qingnian Forest Farm as research object,the measured data of stand biomass for cuttings,mother roots & sprout afforestation by stem analysis and reap were obtained,fitting biomass model of Populus simonii ×P .nigra with three kinds of afforestation methods by using SPSS18.0.Result shows that:the Logistic equation model of D 1 .3 independent variable for Populus simonii ×P .nigra afforested by cuttings & mother root afforestation ,the power function of D 1 .3 independent variable for Populus simonii ×P .nigra afforested by sprout afforestation ,both were conducted to estimate the biomass ,which can meet the accuracy requirements.