临江地区大青杨生长与环境因子的综合分析

用磷以系统理论中的关联分析方法，定量分析了临江地区暗棕壤，白浆土立地条件下影响大青杨的树高，树高连年生长量，胸径连年生长量和材积连年生长量的主要环境因子。通过分析计算得出大青杨生长情况与生长环境因子之间的相关关系，得出影响临江地区大青杨生长量的主要因子有ｐＨ值，海拔，比重，年平均相对湿度，年降水量，水解酸，阳离子代换量，容重，Ａ层厚度等因子；并利用关联分析得出影响大青杨生长的主要环境因子，建立了Ｇ

A Comprehensive Analysis on the Relations between Growth of Populus Ussuriensis and Environmental Factors in Linjiang Area

Using the method of joint analysis of grey system theory. This paper points that the principal environmental factors influence tree height increment,tree height increment over years, diameter increment over years, volume increment over years of Populus ussuriensis under dark brown soil and Baijiang soil circumstances in Linjiang area. The relativity between the growth of Populus ussuriensis and growth environmental factors is calculated and analysed. The main factors are pH. value, elevation,proportion,the annual average relative humidity,the annual precipitation,hydrolysis acid,cation exchange quantity,unit weight and A layer thickness. Forecasting models of GM(0,N) are made by using main environmental factors.