【作者】 郭沂林； 潘剑君；

【Author】 Guo Yilin,Pan Jianjun (College of Resource and Environmental Science,Nanjing Agriculture University)

【机构】 南京农业大学资源与环境科学学院；

【摘要】 本文以寒温带和中亚热带为研究区域,对比分析了这两个区域森林土壤有机碳密度等相关指标,以期为陆地生态系统碳循环研究提供一些参考依据。研究结果表明,100cm深度内,寒温带森林土壤有机碳碳密度>全国森林土壤平均有机碳密度>中亚热带森林土壤有机碳密度;在同一剖面内,随着土层深度的增加,土壤有机碳密度逐渐减小;在寒温带,森林土壤有机碳密度依次为草甸沼泽土>泥炭土>石质土>暗棕壤>棕色针叶林土,在中亚热带则为,山地草甸土>黄壤>黄红壤>红壤>黄泥土>粗骨黄壤>粗骨红壤,与其它文献研究结果一致;且土壤有机质与全氮成显著正相关关系。更多还原

【Abstract】 Soil organic carbon density and the related indictors were studied in the cold temperate zone and mid-subtropics zone to support the terrestrial ecosystem carbon cycle research.The results showed than the forest soil organic carbon density in 0～100cm layer from the highest to the lowest were ranked as follows the cold temperate zone,the whole country and the mid-subtropics zone.In the same profile,soil organic carbon density decreased as the soil depths increased.In the cold temperate zone,soil organic carbon density from the highest to the lowest were ranked as follows meadow-boggy soil,peaty soil,rocky soil,dark brow forest soil and coniferous forest soil.In mid-subtropics zone it was mountain meadow soil,yellow soil,yellow-red soil,red soil,huangni soil,yellow regosol and red regosol.Besides, the content of soil organic carbon had a positive relationship with the total nitrogen.更多还原