| 鼎湖山木荷(Schima Superba)粗死木质残体的分解研究 |
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| 引用本文： | 杨方方,李跃林,刘兴诏.鼎湖山木荷(Schima Superba)粗死木质残体的分解研究[J].山地学报,2009,27(4). |
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| 作者姓名： | 杨方方 李跃林 刘兴诏 |
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| 作者单位： | 1. 中国科学院华南植物园,广东,广州,510650;中国科学院研究生院,北京,100049
2. 中国科学院华南植物园,广东,广州,510650 |
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| 基金项目： | 国家自然科学基金项目 |
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| 摘 要： | 以鼎湖山国家自然保护区季风常绿阔叶林优势种之一木荷的粗死木质残体为研究对象,采用目前国际较认可的腐解等级划分方法,对木荷粗死木质残体3个腐解等级(Ⅰ、Ⅱ、Ⅲ)的密度及养分含量进行测定分析.结果表明:①木荷粗死木质残体的密度随腐解等级的增加从0.58 g/cm3下降到0.16 g/cm3,分解速率常数K值为0.144 7/a,在自然状态下,木荷粗死木质残体分解95%所需时间约为21 a;②粗死木质残体C/N比值随分解的进行先降后升而N/P则相反;③K、Ca、Na、Mg离子浓度随腐解等级的增加出现不同程度的增加,但增幅不明显.研究结果旨在为系统评估粗死木质残体的分解行为在生态系统养分循环中的作用提供基础数据.
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| 关 键 词： | 木荷 粗死木质残体 分解速率 养分含量 |
Decomposition of Coarse Woody Debris (CWD) of Dominate Species Schima superba in Monsoonal Evergreen Broadleaved Forest of Dinghushan Nature Reserve |
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| YANG Fangfang,LI Yuelin,LIU Xinzhao.Decomposition of Coarse Woody Debris (CWD) of Dominate Species Schima superba in Monsoonal Evergreen Broadleaved Forest of Dinghushan Nature Reserve[J].Journal of Mountain Research,2009,27(4). |
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| Authors: | YANG Fangfang LI Yuelin LIU Xinzhao |
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| Institution: | 1.South China Botanical Garden;Chinese Academy of Science;Guangzhou 510650;China;2.Graduate School;Beijing 100049;China |
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| Abstract: | According to an international standardized definition and classification that recently adopted widely for Coarse woody debris(CWD),CWD has been investigated in Dinghushan Nature Reserve monsoonal evergreen broadleaved forest,Guangdong Province in lower subtropical China,where permanent field plots from a 16-year(from 1992 to 2008) study of ecosystem structure and function in an old growth forest were surveyed to obtain sample data on CWD volume,density,and mass of dominant species Schima superba.CWD was stu... |
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| Keywords: | Schima superba coarse woody debris decomposition rate nutrient content |
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