冀北山地华北落叶松人工林与油松天然次生林群落灰色关联度分析

Study on community stability of plantation of Larixprincipis-rupprechtii and natural secondary forest of Pinus tabulaeformis Carr in the mountain areas of northern Hebei

采用灰色关联法,对冀北山区华北落叶松人工林与油松天然次生林群落稳定性进行研究。结果表明:同一海拔样地比较,落叶松林土壤肥力高于油松林;除坡顶样地外,落叶松林同海拔样地内植被生长状况优于油松林;除坡中样地外,油松林同海拔样地内林下草本物种多样性优于落叶松林;除坡顶样地外,落叶松林综合稳定性评价优于油松林。

By using the grey correlation method, the community stability of plantation of Larix principis-rupprechtii and the natural secondary forest of Pinus tabulaeformis in the mountain areas of northern Hebei was studied. The results show that at the same altitude plots, the soil fertility of larch forest is higher than that of Pinus tabulaeforrnis. In addition to the top plots of the hill, the vegetation growth status of larch forest is superior to that of the Pinus tabulaeforrnis at the same altitude. In addition to the middle plots of the hill, the herbaceous species diversity of Pinus tabulaeforrnis is higher than that of larch forest at the same altitude. In addition to the top plots of the hill, the larch forest stability is better than that of Pinus tabulae forrnis.