西南林业大学学报Issue(3)：41-45,5.DOI:10.3969/j.issn.2095-1914.2014.03.008
赣南森林生态系统倒木特征研究
Study on Quantitative Features of the Fallen Trees in Southern Jiangxi Forest Ecosystems
摘要
Abstract
The quantitative characteristics of the fallen trees with different decomposition classes in 30 sample plots of four forest types in south Jiangxi Province including the evergreen broad-leaved forest,Cunninghamia lanceolata plantation,Phyllostachys edulis plantation and Pinus massoniana forest were studied.The results showed that the biomass and volume of the fallen trees in the four different forest types were individually in the range of 0.04-14.6 t/hm2 and 0.60-23.00 m3/hm2 .Among the different forest types,both of the biomass and volume of the fallen trees in the evergreen broad-leaved forest were the maximum,and there were significant differences in the two indexes between the evergreen broad-leaved forest and the other forest types.There was a great difference in the proportion among decomposition classes of the fallen trees,the intermediately decomposed fallen trees accounted for the largest proportion by 60.7%,while the slightly and heavily decomposed fallen trees took 22.1%and 17.2%, respectively.The volume distribution of the fallen trees in south Jiangxi Province was dominated by class Ⅴdiameter trees (mid-diameter≥20cm),which occupied 36.4% of the total,followed by class Ⅲ diameter trees (10-15 cm in mid-diameter),which accounted for 25.8%,and the classⅠdiameter trees (0-5 cm in mid-di-ameter),which accounted for only 0.3% of the total.关键词
倒木/生物量/材积/径级/分解等级/赣南地区Key words
fallen trees/biomass/volume/diameter class/decomposition classes/south Jiangxi Province分类
农业科技引用本文复制引用
吴春生,刘苑秋,魏晓华,李晓东,刘亮英,欧阳勋志,郭晓敏,张文元..赣南森林生态系统倒木特征研究[J].西南林业大学学报,2014,(3):41-45,5.基金项目
中国科学院战略性先导科技专项（XDA05050205）资助。 （）
