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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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南京城市森林生态系统的碳储量和碳密度研究
DOI: 10.3969/j.jssn.1000-2006.2011.04.004, PP. 18-22
Keywords: 碳储量,碳密度,城市化,森林结构,南京
Abstract:
基于第6次森林资源二类清查数据，运用生物量-蓄积量方程及土壤调查数据计算了南京市森林生态系统碳储量和碳密度。结果表明：南京市森林生态系统碳储量为3？098tg。其中，植被层和土壤层碳储量分别为1？357tg和1？741tg。碳储量的主要特点表现为城区大于城郊区（p＜0？05）；不同林龄从大到小排序为：中龄林、幼龄林、近熟林、成熟林、过熟林，仅中熟林与过熟林之间差异显著（p＜0？05）；不同林型从大到小排序为：针叶林、阔叶林、针阔混交林，且针叶林与针阔混交林之间差异显著（p＜0？05）；人工林碳储量显著大于天然林（p＜0？05）。森林生态系统碳密度为38？69mg/hm2。其中，植被层和土壤层碳密度分别为16？92mg/hm2和21？77mg/hm2，除了街道林分的碳密度明显低于其他3个功能区外（p＜0？05），不同林型、林龄和起源林分之间的碳密度均无显著差异（p＞0？05）。
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