冀北山地蒙古栎次生林生态修复树种筛选试验研究

Experiment on Tree Species Selection for Ecological Restoration of Quercus Mongolica Secondary Forest in Mountainous Area of Northern Hebei

针对冀北山地蒙古栎次生林种群结构和生态功能退化、生长缓慢、天然更新能力低下的问题,选择油松、云杉、五角枫、黄檗及紫椴5个树种,对蒙古栎次生林进行生态修复造林试验,筛选蒙古栎次生林生态修复适宜树种。结果显示,造林5年后(2021年),油松、紫椴的保存率、株高和地径年平均生长量均较高;油松、紫椴是蒙古栎次生林生态修复首选树种,五角枫、云杉可作为备选树种,黄檗保存率低于40%,不适宜蒙古栎林下造林。

In view of of the degradation of population structure and ecological function, slow growth and low natural regeneration ability of Quercus mongolica secondary forest in the mountainous area of northern Hebei, five tree species of Pinus tabuliformis, Picea asperata, Acer mono Maxim, Phellodendron amurense and Tilia amurensis are selected to carry out ecological restoration afforestation experiment on secondary forest of Quercus mongolica, and select suitable tree species for ecological restoration of quercus mongolica secondary forest. The results shows that 5 years later(2021), the preservation rate, plant height and ground diameter of Pinus tabuliformis and Tilia amurensis are higher. The experiment demonstrated that Pinus tabuliformis and Tilia amurensis are the first choice tree species for ecological restoration of quercus mongolica secondary forest, Acer mono Maxim and Picea asperata could be used as alternative tree species, and the preservation rate of Phellodendron amurense is less than 40%, which is not suitable for afforestation under Quercus mongolica forest.