摘要
在对平泉大窝铺小鹰窝沟等处更新良好的天然油松林进行调研后认为 :阳坡油松林在 4 0 a左右达到更新成熟。在此期间对林地进行刈草和块状整地 ,造成裸露、疏松和凹凸不平的微地形 ,并在种子半年实行渐伐、择伐或强度间伐 ,保留郁闭度在 0 .3～ 0 .6 ,可获得满意的更新效果 ,此结论将对承德市
After having made a detailed research about renewing the fine natural Chinese pines in DaWopu forest farm of Pingquan County,I make the following plan.Those Chinese pines at the solar hillsides come to renew and mature in 40 a.During this time,wed better cut the grass among the forest and arrange the fields by parts so as to loose the earth and form the open and uneven small farm fields.At the same time,we will carry out a plan of cutting the young useless plants with proper choosing and intensity.Good results will be obtion if we keep the plants away each other at a distance from 3 to 6 centimetres.It will offer some useful experience and interests to the renewing work of the 60 thousand man made Chinese pines of the Chengde district.
关键词
大窝铺
天然油松林
更新
渐伐
择伐
间伐
DaWopu the natural Chinese pines
renew
cut with a certain distance
cut step by step
cut with proper choosing
