中国地质调查2025，Vol.12Issue(6)：61-68,8.DOI:10.19388/j.zgdzdc.2024.245
成土母质及土壤类型作用下土壤有机碳分布特征
Distribution characteristics of soil organic carbon under the influence of parent material and soil type
摘要
Abstract
Soil organic carbon is an important component of the terrestrial ecosystem carbon pool,playing an im-portant role in the carbon cycling process of farmland soil and the quality of farmland.The spatial distribution characteristics of soil organic carbon are affected by many factors,among which parent material and soil type di-rectly affect the distribution of soil organic carbon.The authors in this study took Yanji Jiuchao Plain in the cen-tral eastern region of Yanbian Prefecture in Jilin Province as an example to analyze and study the distribution char-acteristics and influencing factors of soil organic carbon in typical soil profiles in the area through systematic strati-fied sampling.The results showed that the average organic carbon content in the soil of Jiuchao Plain in Yanji was 48.68 × 10-3,which was generally rich.And the organic carbon content gradually decreased with the increase of profile depth in vertical direction.Besides,the content of the surface organic carbon([0,20]cm)was signifi-cantly higher than that of the deep soil,showing surface aggregation.The main types of parent material in Jiuchao Plain of Yanji were Mesozoic sandstone weathering materials and Quaternary loose deposits.The soil organic car-bon enrichment ability developed by Quaternary loose deposits was lower than that developed by Mesozoic sand-stone weathering products,with higher loss rate and variability.The main soil type developed in Yanji Jiuchao Plain was dark brown soil and paddy soil.The organic carbon content of soil with different types had a significant negative relationship with the soil depth.Compared with dark brown soil in the same soil layer,paddy soil had high variability and significant loss along the depth profile.The research results could provide basic data for evalu-ating the carbon sources and sinks of soil organic carbon in Yanji Jiuchao Plain,and could provide references for the spatial distribution of soil organic carbon and changes in deep soil organic carbon in Northeast China.关键词
土壤有机碳/空间分布/成土母质/土壤类型/鸠巢平原Key words
soil organic carbon/spatial distribution/parent material/soil type/Jiuchao Plain分类
天文与地球科学引用本文复制引用
牛茗,兰理实,高海威,宋立东,马力,韩科胤..成土母质及土壤类型作用下土壤有机碳分布特征[J].中国地质调查,2025,12(6):61-68,8.基金项目
中国地质调查局"长白山东部水土流失区土壤侵蚀作用下土壤有机碳迁移机制研究(编号:QCJJ2023-57)"及"呼伦贝尔农牧交错带自然资源及生态环境观测与监测评价(编号:DD20242492)"项目联合资助. （编号:QCJJ2023-57）
