河北山地植被恢复制约性因素分析及影响研究

Analysis and Influence Study of Mountain Vegetation Restoration in Hebei Province

选取河北山地典型树种油松、侧柏、刺槐、华北落叶松、栓皮栎等5个树种,选用母质、海拔、坡向、坡度、质地、土层厚度等7个立地因子数据,进行广义方差分析,得到各因子的得分和立地指数模型及立地因子的作用强度系数,分析结果表明坡向、土层厚度是河北山地植被生态修复的制约性因素。

Five typical tree species in the mountainous areas of Hebei Province,including Chinese pine,Platycladus orientalis,Robinia pseudoacacia,North China larch,and Quercus variabilis,were selected.Seven site factor data,including parent material,altitude,slope direction,slope,texture,and soil layer thickness,were selected for generalized variance analysis.The scores of each factor,site index model,and site factor intensity coefficient were obtained.The analysis results showed that slope direction and soil layer thickness were the limiting factors for ecological restoration of vegetation in the mountainous areas of Hebei Province.