不同无性繁殖造林小黑杨生物量模型研究

摘要

In order to investigate the biomass state of Populus×xiaohei which was afforested by different ways of asexual reproduction in Bashang region of Zhangjiakou city, by taking Populus×xiaohei plantation afforested by asexual reproduction in Zhangbei county and Guyuan county as study objects, the biomass data of Populus×xiaohei were measured by stem analysis and harvesting methods, which were afforested by cuttage, mark-and-sweep and pile anchoring, and the biomass models of Populus×xiaohei afforested by the three ways were fitted by adopting SPSS18.0. The results indicate that (1) The coefficients of determination (R2) of nonlinear regression models were all greater than 0.96, D1.3 and D1.32H can account for biomass of each organ very well;(2) The Logistic equation model for Populus×xiaohei afforested by cottage, the power function model for Populus×xiaohei afforested by mark-and-sweep, and the Logistic equation model for Populus×xiaohei afforested by pile anchoring has been built.%旨在研究张家口坝上地区不同无性繁殖造林小黑杨生物量状况，以张家口坝上张北、沽源的无性繁殖造林小黑杨为研究对象，采用树干解析和收割的方法获取插条、断根和埋桩造林的小黑杨的生物量实测数据，利用SPSS18.0拟合3种无性繁殖造林小黑杨的生物量模型，其结果表明：（1）非线性回归模型的判定系数R2都大于0.96，D1.3和D1.32H能够很好解释各器官生物量。（2）分别建立了插条造林小黑杨生物量的Logistic方程模型、断根造林小黑杨生物量的幂函数模型和埋桩造林小黑杨生物量的Logistic方程模型。