期刊论文

Fang, X.

中文

生态学报

1000-0933

2015

35

14

4668-4677

10.5846/stxb201312052896

国家林业公益性行业科研专项（201304317） 国家林业局林业科技推广项目（[2012]61）

本校为第一且通讯机构

为研究亚热带次生林保护对森林生态系统养分循环等功能过程的影响。采用凋落物直接收集法,比较湘中丘陵区3种次生林(马尾松+石栎针阔混交林、南酸枣落叶阔叶林、石栎+青冈常绿阔叶林)和杉木人工林的凋落物量、组成特征及其周转期。结果表明:4种林分年凋落物量在414.4-818.2 g m~(-2) a~(-1)之间,3种次生林显著高于杉木人工林,3种次生林两两之间差异不显著,落叶对林分凋落物量的贡献最大,占林分凋落物量的59.9%—66.6%。杉木人工林和南酸枣落叶阔叶林的凋落物量月动态变化呈“双峰型”,马尾松+石栎针阔混交林、石栎+青冈常绿阔叶林呈“不规则型”。优势树种的凋落物量对其林分凋落物量的贡献随林...

Above ground litter production (leaves, twigs, fruits, flowers) is an important component of the nutrient cycling in forests. In order to quantify annual litter production of subtropical forests and to better understanding of the effects of secondary forests on nutrient cycling in forest ecosystems, litter production, composition and turnover were investigated in four dominant subtropical forest types in Hunan Province, China. The four forest types included three types of secondary forests (i.e. a Pinus massoniana and Lithocarpus glaber mixed f...