利用全国森林清查调查材料,用数理统计方法,检验白杨、黑杨、泡桐、刺槐、栎类和其他杂木等各阔叶树生长量的差异性,结果表明:各树种间指标波动性区别不大,刺槐、栎类树种表现出与其他树种有显著性差异。%Differences of growth for Populus alba ,Populus nigra ,Paulownia fortunei ,Robinia pseudoacacia ,Quer-cus spp.and weed trees were determined based on survey data of China forest assessment by using mathematics sta-tistic method.Result shows that undulatory property of index among each species is not big;Robinia pseudoacacia , Quercus spp.have significant differences with other species.
展开▼