黄土高原主要乔木树种材积生长量的灰色预测模型

根据黄土高原地区不同立地条件下的杨树、油松、侧柏等树干解析材积生长量资料,应用Verhulst模型,进行了预测分析。结果表明:单株材积生长量的计算值与实际值基本是一致的,而且符合这几种树木生长规律。该模型对黄土高原地区主要乔木材积生长量的预测有一定的价值。

The Grey Forecast Model on Volume Increment of Principal Arbor Species in Loess Plateau

Describes the volume increment forecast for poplar, Chinese pine, oriental arborvitae analytical by applying the Verhulst model on basis of stem data of different conditions in Loess Plateau.The results showed that, the calaulated volume increment of single tree coincides well with its actual volume increment .Therefore, the Verhulst msdel, is valuable -for the prediction of volume increment of principal Arbor speciesi in Loess Plateau.