机构地区: 广东海洋大学
出 处: 《西北林学院学报》 2007年第5期168-171,共4页
摘 要: 通过对森林林分的2个重要因子——胸径和树高的随机系列分析发现,胸径为一阶单整I(1),树高为二阶单整I(2),它们具有协整关系,协整向量为(1,0.733 4)。从协整模型分析可以得到胸径生长有利于树高生长,所以在森林培育中更加注重胸径培育,在促进胸径生长的同时,促进树高的生长,最终达到整个林分的生长。 Two important factors of forest stand(DBH) and tree height(H) were analyzed stochasticly.The results showed that DBH was first order I(1) and H,was second order I(2).The cointegrate vector of the DBH and H was(1,073 34). By analyzing the model,it was found that the growth of diameter was beneficial for the growth of height.It was concluded that more attention must be paid on the cultivation of diameter than the cultivation of tree height.