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OALib Journal期刊
ISSN: 2333-9721
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鼎湖山粗死木质残体生物量特征
DOI: 10.3724/SP.J.1145.2011.00750, PP. 750-752
Keywords: 粗死木质残体,生物量,鼎湖山,季风常绿阔叶林
Abstract:
对鼎湖山季风常绿阔叶林1hm2永久性样地内粗死木质残体（coarsewoodydebris，简称cwd）的生物量、存在形式及分解状态进行研究.结果表明：1）鼎湖山季风常绿阔叶林cwd的生物量为42.09thm-2，其中倒木和枯立木分别为32.81thm-2、9.28thm-2，所占比例分别为77.9%、22.1%.1999~2010年间cwd年均输入量为1.68thm-2a-1.2）cwd主要优势树种为锥栗（castanopsischinensis）、黄杞（engelhardtiaroxburghiana）和荷木（schimasuperba），所占比例分别为54.0%、15.1%和13.9%.3）cwd径级主要分布在30cm以下，但对cwd生物量贡献最大的径级在30cm以上.4）cwd的分解状态主要为中度分解状态，占cwd总生物量的61.2%.研究还表明，鼎湖山季风常绿阔叶林的cwd生物量呈逐年增加趋势.图2表3参17
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