摘要
采用地统计学方法,对长白山北坡原始阔叶红松林内土壤有机碳的空间分布特征进行了研究,并对其与细根生物量的相关性进行了分析。结果表明:3块样地土壤有机碳密度的变程分别为3.568、5.866、2.773 m,结构比为40%～65%,表明研究区域内土壤有机碳密度具有中等空间相关性;土壤有机碳质量分数随土壤深度的增加而减少,与细根的垂直分布特征相似;3块样地分别在5.011、4.590、4.912 m空间距离范围内土壤有机碳密度与细根生物量存在相关性,土壤有机碳密度与细根生物量协方差函数的结构比为50%～80%。
Geostatistical method was applied to study the spatial distribution of soil organic carbon and analyze its relation to fine root biomass of woody plants in a broad-leaved Korean pine（Pinus koraiensis） forest in Changbai Mountains in 2009.Results showed that the ranges of organic carbon density of three sampling plots were 3.568,5.866 and 2.773 m respectively.The structure ratio ranged from 40% to 65%,indicating that soil organic carbon density has a moderate correlation in space.Soil organic carbon content decreased with soil depth,and it was similar to fine root in vertical distribution.There was a correlation between soil organic carbon density and fine root biomass within the spatial distances of 5.011,4.590 and 4.912 m in the three sampling plots,respectively.The structure ratio of covariance functions for soil organic carbon density and fine root biomass was between 50% and 80%.
出处
《东北林业大学学报》
CAS
CSCD
北大核心
2011年第6期52-55,共4页
Journal of Northeast Forestry University
基金
国家自然科学基金项目(40930107)
中国科学院知识创新工程重要方向资助项目(KZX2-YW-416)
关键词
土壤有机碳
空间异质性
细根
阔叶红松林
Soil organic carbon
Spatial heterogeneity
Fine roots
Broad-leaved Korean pine forests
