CAJ | 학술논문

以神农架巴山冷杉林二类清查资源数据为基础，通过建立土壤碳密度与林分平均胸径的关系模型，估算土壤有机碳密度，探讨土壤碳密度的空间分布特征.结果表明：神农架巴山冷杉林0~20 cm 和0~40 cm 土壤碳密度分别为75.25 t?hm－2和130.89 t?hm－2.土壤碳密度最小值出现在海拔2200 m 以下，最大值出现在海拔2800~3000m.巴山冷杉林在北坡土壤碳密度最大，而东南坡土壤碳密度最小.巴山冷杉林随着年龄的增加，土壤碳密度有逐渐增加的趋势，与幼龄林相比，过熟林0~20 cm 和0~40 cm 土壤碳密度分别高15.66％和16.47％.
이신농가파산랭삼림이류청사자원수거위기출，통과건립토양탄밀도여림분평균흉경적관계모형，고산토양유궤탄밀도，탐토토양탄밀도적공간분포특정.결과표명：신농가파산랭삼림0~20 cm 화0~40 cm 토양탄밀도분별위75.25 t?hm－2화130.89 t?hm－2.토양탄밀도최소치출현재해발2200 m 이하，최대치출현재해발2800~3000m.파산랭삼림재북파토양탄밀도최대，이동남파토양탄밀도최소.파산랭삼림수착년령적증가，토양탄밀도유축점증가적추세，여유령림상비，과숙림0~20 cm 화0~40 cm 토양탄밀도분별고15.66％화16.47％.
Based on inventory data of Abies fargesii forest in Shennongjia,the soil carbon density was estimated by es-tablishing model between soil carbon density and forest average DBH,and then the spatial distribution of soil carbon den-sity was discussed.The results showed that soil carbon density was 75.25 t ? hm-2 in 0 ~ 20 cm layer,while that was 130?89 t?hm-2 in 20~40 cm layer.The minimum soil carbon density occurred in the altitude of 2 200 m,and maximum appeared in the altitude between 2 800~3 000 m.The soil carbon density on the north slope was the maximum,while soil carbon density on the southeast slope was the least.With the increasing of tree age,the soil carbon density also increased gradually.Compared with the young forest,soil carbon density of over mature forest in 0~20 cm and 0~40 cm increased by 1 5.66% and 1 6.47% respectively.