豫西天然次生林林分特征调查研究

Investigation on Stand Characteristics of Nature Secondary Forests in Western Henan

在豫西熊耳山北坡、崤山南坡,调查天然次生林林分特征。结果表明:豫西天然次生林是因受人为因素影响而形成的多代萌生林,处于恢复演替过程中的初级阶段。沟谷及山坡下部林木多呈簇生分布,株数较多;山坡中上部林木枝杈较多,自然整枝不良;林缘及郁闭度小于0.8的林分中灌木稠密;森林层间藤本缠绕。这种森林自然生长状态影响林木正常生长和综合效益发挥,应加强森林抚育。

The investigation on the stand characteristics of the nature secondary forests was made on the north slope of Xionger Mountain and south slope of Xiaoshan.The results showed that the nature secondary forests was perennial coppice forest and in the preliminary phase of the restoration succession because of the effects of man-made factors.In the lower of the slope and the gullies,the forest mostly showed clusters and the quantity was large.At the middle-upper of the slope,the forest showed too much branches and poor natural trimming.At the edge of the forest and in the lower canopy coverage of 0.8 the shrub was dense,and the vine was climbing among the forest.The natural growing status of the forest influenced the normal growth of the tree and the comprehensive effect.It should be tended and managed intensely.