CAJ | 학술논문

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。
기우양지조사화실내분석，비교연구료장백산지구전형적8충삼림류형토양유궤탄화전담적질량분수、탄담비、탄밀도화담밀도적분포특정。결과표명，8충림형토양유궤탄화전담적질량분수변화범위분별시36．99～70．33、3．14～6．04 g· kg－1，유궤탄、전담질량분수최대적림형균시활협혼교천연림。홍송천연림토양C ／N치최대위15．56，기타C ／N치변화범위위10．55～12．19。재토양수직부면상，수착토층심도적증가，토양적유궤탄、전담질량분수수지체감，토양밀도수지체증。8충림형토양탄밀도시양수천연림최대，위22．13 kg· m－2，담밀도시락협송인공림최대，위1．97 kg· m－2；침활혼교인공림적탄밀도화담밀도균위최소，분별시12．37、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