长白山8种林型土壤有机碳和全氮的质量分数及垂直分布特征  

Contents and Vertical Distribution Characteristics of Soil Organic Carbon and Total Nitrogen of Eight Forest Types in the Changbai Mountain

作　　者：宋彦彦[1] 史宝库[1] 张言[1] 牛香[2] 耿绍波[1] 赵忠林[1] 李英爱[1] 汪兆洋 管清成 

机构地区：[1]吉林省林业勘察设计研究院,长春130022 [2]中国林业科学研究院森林生态环境与保护研究所

出　　处：《东北林业大学学报》2014年第12期94-97,105,共5页Journal of Northeast Forestry University

基　　金：林业公益性行业科研专项(201404303)

摘　　要：基于样地调查和室内分析,比较研究了长白山地区典型的8种森林类型土壤有机碳和全氮的质量分数、碳氮比、碳密度和氮密度的分布特征。结果表明,8种林型土壤有机碳和全氮的质量分数变化范围分别是36.99-70.33、3.14-6.04 g·kg^-1,有机碳、全氮质量分数最大的林型均是阔叶混交天然林。红松天然林土壤C/N值最大为15.56,其它C/N值变化范围为10.55-12.19。在土壤垂直剖面上,随着土层深度的增加,土壤的有机碳、全氮质量分数随之递减,土壤密度随之递增。8种林型土壤碳密度是杨树天然林最大,为22.13 kg·m^-2,氮密度是落叶松人工林最大,为1.97 kg·m^-2;针阔混交人工林的碳密度和氮密度均为最小,分别是12.37、1.11 kg·m^-2。By the field data and laboratory analysis , we investigated and compared the contents and vertical distribution charac-teristics of soil organic carbon （C）, total nitrogen （N）, carbon nitrogen ratio （C/N）, C density and N density of eight kinds of typical forest types in the Changbai Mountain area .Soil organic C and soil N for the eight forest types varied from 36.99 to 70.33 g· kg^-1 and 3.14 to 6.04 g· kg^-1, respectively.The soil organic C and soil N were highest in the broad leaved mixed forest.The ratios of C/N was highest in the natural Korean pine forest （15.56）.The ratios of C/N in other forest types varied from 10.55 to 12.19.In the soil profile , the contents of soil organic C and N generally decreased with the increase of soil depth .On the contrary , soil density increased with the increase of soil depth .The soil organic C density was highest in the natural poplar forest , 22.13 kg· m^-2 , soil N density was highest in Larix gmelini plantation , 1.97 kg· m^-2 , and soil organic C density and soil N density were lowest in the mixed broadleaf-conifer plantation, 12.37 kg· m^-2 and 1.11 kg· m^-2, repectively. 〈br〉 Keywords Forest type; Soil organic carbon; Total soil nitrogen; Carbon density; Nitrogen density; Distribution characteristics

关 键 词：森林类型 有机碳 全氮 碳密度 氮密度 分布特征 

分 类 号：S714.5[农业科学—林学]