广西科学2017，Vol.24Issue(2)：159-167,9.DOI:10.13656/j.cnki.gxkx.20170125.003
特大冰冻干扰后常绿阔叶林林木和幼苗的短期动态
Short Term Dynamics of Trees and Seedlings of Evergreen Broadleaved Forest after a Severe Frozen Disturbance in Damingshan,Southern China
摘要
Abstract
[Objective]The objective of this study was to investigate and reveal the short term dynamics of tree and seedlings of evergreen broadleaved forest after a severe frozen disturbance in Damingshan in Guangxi.[Methods]Tree and seedlings of evergreen broadleaved forest in the 3.2 hm2 permanent plot built in 2009 had been continuously monitored for 4 years from 2009 to 2012.[Results]The response and adaptation of tree and seedlings to the severe frozen disturbance were different.Density and richness of trees with DBH≥1 cm significantly increased 1 year after the disaster,then slightly decreased and relatively stabilized.While density and richness of seedlings significantly increased 1 year after the disaster and then remarkably decreased.Recovered response of different tree species to frozen disturbance was different.Seedlings of 13 families completely disappeared in the 4 years of recover.Although the disappeared species were mainly rare species,several species belonging to the dominate families,such as Lauraceae and Theaceae,disappeared or increased to some extent.There was significantly positive correlation between tree density and richness,seedlings density and richness,tree density and richness with seedlings density and richness.[Conclusion]Tree density and richness determined the species,quantity and dynamics of understory seedlings in a large extent,which was the results of resource availability and tree ecological and biological property.关键词
常绿阔叶林/冰冻灾害/干扰/更新/木本植物/大明山Key words
evergreen broadleaved forest/ice storm damage/disturbance/regeneration/ligneous plants/Damingshan分类
农业科技引用本文复制引用
赵明威,周晓果,温远光,朱宏光..特大冰冻干扰后常绿阔叶林林木和幼苗的短期动态[J].广西科学,2017,24(2):159-167,9.基金项目
国家自然科学基金项目(31460121,30860059)资助. （31460121,30860059）
