长白山红松混交林干扰历史的重构研究

STUDY ON THE RECONSTRUCTION OF DISTURBANCE HISTORY OF PINUS KORAIENSIS MIXED FOREST IN CHANGBAL MOUNTAIN

本文通过对取自３００棵林木的年轮盘年轮宽度分析，利用林木年轮中表现出的释压（ｒｅｌｅａｓｅ）反应，进行红松混交林干扰历史重构研究，结果表明：利用林木的释压反应，分析诸如长白山红松混交林这种以风作为主要干扰类型的林分干扰历史是合理的方法，也是现行林分干扰历史推测方法中最准确、可靠、提供信息量最大的方法；只要满足一定的样本数，是可以通过样树的释压反应分析出林分的干扰历史；对红松混交林而言，臭松、鱼杯松和红松是干扰历史分析的理想树种；在天然红松混交林中被压林水比率与干扰密切相关，一次干扰导致林分被压林木一次大幅度下降，而当较长时间不发生干扰时，林分被压林木比率逐渐上升。群落干扰历史的重构为群落和生态系统动态研究提供有利的历史资料。

The method for reconstructing the disturbance history of Pinus koraiensis mixed forest is developed in this paper basing on the information of release from the data of growth ring collected from more than 300 individual trees.The result indicates that it is a reliable and accurate method for reconstruct-ing disturbance history of forest,such as Pinus koraicnsis mixed forest with wind as a main factor of disturbance. A bies nephrolepis,Picea jezoensis and Pinus koraientis are three useful tree species for analyzing the disturbance hi-story in Pinus koraicnsis mixed forest.The ratio of suppression trees in the stand is closely related to the disturbance. Each disturbance makes a large decrease of the ratio of suppression trees,and when no disturbance occurs for long time,the ratio of suppression trees will increase gradually.