摘要
以2008年初遭受特大冰雪灾害干扰的大明山国家级自然保护区常绿阔叶林为研究对象,采用样方收获法测定林地上的木质残体贮量及其腐解等级特征。结果表明:大明山常绿阔叶林木质残体的总贮量为37.249t·hm-2,其中粗木质残体和细木质残体的贮量分别为33.143和4.106t·hm-2,依次占林地木质残体总贮量的88.98%和11.02%;倒木和落枝是大明山常绿阔叶林木质残体贮量的主要贡献者,分别占木质残体总贮量的61.6%和34.6%;木质残体各腐解等级的贮量百分比序列为2级(69.22%)>4级(13.62%)>3级(12.98%)>5级(3.96%)>1级(0.22%);2008年初的特大冰雪灾害干扰对大明山常绿阔叶林木质残体输入量的有显著影响,导致腐解2级的贮量高达25.784t·hm-2。
The storage and decay of woody debris （WD） in a evergreen broad - leaved forest were investigated by using sampling plot harvesting method after it was interfered by the serious frozen disaster in the early 2008 in the Daming mountain nature reserve. The results showed that the total storage of woody debris was 37. 249 t.hm-2, among which the storage of coarse woody debris （CWD） and fine woody debris （FWD） was composed 33. 143 and 4. 106 thm-2, respectively, accounting for 88.98% and 11.02% of total WD storage. Logs and branches were the main contributors to the total WD storage in the forest, occupied 61.6% and 34.6% , respectively. The storage of each decay class was ranked as follows： class 2 （69.22%） 〉 class 4（13.62% ） 〉 class 3 （12.98%） 〉 class 5 （3.96%） 〉 class 1 （0.22%）. The frozen disaster had enormous effects on the input of woody debris of the evergreen broad - leaved forest in the Daming mountain, and the storage of the decay class 2 reached to 25. 784 t.hm-2.
出处
《林业科学》
EI
CAS
CSCD
北大核心
2012年第3期11-16,共6页
Scientia Silvae Sinicae
基金
国家自然科学基金项目(30860059)
广西大学国家林业局中南速生材繁育重点开放性实验室开放课题主任基金项目(ZR-2009-01)
关键词
常绿阔叶林
木质残体
干扰
冰雪灾害
evergreen broad-leaved forests
woody debris
interference
frozen disaster
