西北林学院学报2011，Vol.26Issue(2)：160-166,7.
不同采伐强度对辽东栎林幼苗更新的影响
Effects of Different Cutting Intensities on Seedling Regeneration of Quercus liaotungensis
摘要
Abstract
Effects of different cutting intensities on seedling regeneration of Quercus liaotungensis were in-vestigated in Caijiachuan Forest Farm in Huanglong Mountain. Cutting intensities included fixed clear cutting, 30 ％ and 15 ％ thinning strength, and closed tending (control). Growth situations of seedlings and sprouts were investigated based on the four type plots. The results showed that the amount of seedlings and sprouts, the growth conditions, forestland growth indices were different among the four types. In the plot of 30 ％ thinning strength, significant increases were found in the indices such as seedling average basal diameter, average height, average crown width, average leaf area and average soil water content and nutrient, and these indices also increased in some extents in the 15 ％ thinning plot. Compared with the closed tending forestland, in clear cutting plot, the amount of sprouts increased while the amount of seedlings decreased, and the soil water content and nutrient also decreased. Compared with clear cutting, in thinning plots, the amount of seedlings increased, the individual developed well, and the soil water content and nutrient were higher. In clear cutting plot, the amount of sprouts increased but the soil water content and nutrient decreased. It was suggested that in the management of Q. liaotungensis forests, close-to-nature forest cutting management should be mainly adopted in Q. liaotungensis community to reduce the destruction of shrub and grass layer, and to improve the community complex structures. Thirty percent thinning strength should be drafted, canopy density should be controlled from 0. 5 to 0.7, ungraded woods and diseased woods should be thinned in order to promote the Q. liaotungensis community into unevenaged forest.关键词
采伐强度/更新/辽东栎林/幼苗分类
农业科技引用本文复制引用
邓磊,张文辉,何景峰,范中兴..不同采伐强度对辽东栎林幼苗更新的影响[J].西北林学院学报,2011,26(2):160-166,7.基金项目
中科院科学院西部行动计划项目(KZCX2-XB2-05) （KZCX2-XB2-05）
国家"十一五"科技支撑课题(2006BAD09B03) （2006BAD09B03）
中科院百人计划项目(KZCX2-YW-BR-02). （KZCX2-YW-BR-02）
