阔叶红松林倒木贮量的变化规律

研究了长白山阔叶红松林倒木贮量的动态变化规律。阔叶红松林倒木贮量包括其现有倒木及其年输入量等贮量的变化规律。阔叶红松林现有倒木贮量开始为１６．２５ｔ／ｈｍ＾２，以后随时间减少，到１００ａ后分解掉其干重的８５％左右，３００ａ后所剩无几。例木年输入量平均约为０．６ｔ／ｈｍ＾２，其贮量是随时间而增加，２００ａ后稳定在３１ｇ／ｈｍ＾２，可保持到该群落的顶级时期。倒木总贮量的变化在初期呈增加趋势，而后随着现

Storage dynamics of fallen trees in the broad leaved and Korean pine mixed forest

A study was carried out the storage dynamics of fallen trees in the broad leaved and Korean pine mixed forest in the Changbai Mountains,Jilin Province,The fallen trees storage dynamics includes the existing fallen trees and the annual input in the mixed forest.The existing storage of fallen trees was 16.25 t/hm 2 in the initial stage,then the storage reduced,after 100 years,85% of the dry weight was decomposed and only a few left after 300 years.The average annual input of fallen trees was 0.6 t/hm 2,it increased with the lapse of time and became 31.0 t/hm 2 after 200 years.It would maintain this amount until the climax community was over.The total storage of fallen trees increased in the early stage.In pace with the decomposition of fallen trees,the storage was identical with the annual input of fallen trees,and finally it would be stable.