次生蒙古栎林抚育改造的研究

通过１０ａ对次生蒙古栎林进行抚育改造试验，结果表明：次生蒙古栎林采取带状皆伐和带状疏伐相结合的抚育改造经营方向是可行的，皆伐带及疏伐带带宽均以１０ｍ为宜，疏伐带簇状更新红松，红皮云杉，皆伐带则单株或簇状更新樟子松，红松，红皮云杉均可，疏伐带二次疏伐抚育时间１５ａ较为适宜。

The Tending and Changing to the Secondary Quercus mongolica Forest

After 10 year researches on the tending and changing of secondary and low yielding Quercus mongolica forest,the results showed:it was probable to adopt tending and changing management of the combining with the belt of clear cutting and improvement felling.It is suitable that belt width of clear cutting and improvement felling are ten metres. Pinus koraiensis and Picea koraiensis were renewed by clustering way in the improvement felling,and Pinus sylvestris , Pinus koraiensis,Picea koraiensis by single way or clustering way in the clear cutting belt.The suitable tending time is 15 years for the improvement felling belt.