摘要
科学划分成土母质可为正确理解和认识土壤区域地球化学元素分散富集规律提供重要参考.本文以长白山东部延边朝鲜族自治州为例,提出“建造时代+岩石类别+搬运类型”的成土母质分类方案,将该地区的成土母质划分为第四纪冲洪积物、第四纪基性火山岩类残坡积物、第四纪碱性火山岩类残坡积物、新近纪-古近纪砂岩类残坡积物等14类.研究表明,延边州成土母质、土壤的理化性质受地质建造单元的约束控制,同一成土母质上的不同土壤类型具有相似的地球化学特征,不同成土母质形成的同一种土壤类型存在较大的地球化学差异.基于地质建造的成土母质分类方案既能有效反映不同构造背景和成岩环境下的成土母质差异,又能有效表征成土母质与其上土壤的内在联系.
The scientific classification of soil-forming parent materials provides an important reference for understanding the regional geochemical dispersion and enrichment patterns of elements in soils.Taking the Yanbian Korean Autonomous Prefecture in eastern Changbai Mountain as a case study,this paper proposes a classification scheme for parent materials based on"formation age+rock type+transport pattern".The parent materials in the prefecture are classified into 14 types,including Quaternary alluvial-diluvial deposits,Quaternary mafic volcanic residual-eluvial deposits,Quaternary alkaline volcanic residual-eluvial deposits,Neogene-Paleogene sandstone residual-eluvial deposits etc.The study indicates that the physical and chemical properties of the parent materials and soils in Yanbian are governed by the geological formation units.Soil types varying on the same parent material share similar geochemical characteristics,whereas the same soil type derived from different parent materials displays significant geochemical differences.The classification scheme based on geological formations can effectively reflect the differences in parent materials associated with varying tectonic and diagenetic settings,and meanwhile capture the intrinsic relationship between parent materials and their derived soils.
作者
佟智强
裴艳东
赵院冬
宋立东
王建伟
孙艳玲
TONG Zhi-qiang;PEI Yan-dong;ZHAO Yuan-dong;SONG Li-dong;WANG Jian-wei;SUN Yan-ling(Mudanjiang Natural Resources Comprehensive Survey Center,CGS,Mudanjiang 157021,Heilongjiang Province,China;Hulunbuir Black Soil Earth Critical Zone Field Scientific Observation and Research Station,Hulunbuir O21599,Inner Mongolia,China)
出处
《地质与资源》
2026年第1期104-114,37,共12页
Geology and Resources
基金
中国地质调查局项目“长白山东部敦化-图们地区生态修复综合调查”(DD20230475)。
关键词
土壤类型
成土母质
地质建造
生态地质调查
吉林省
soil type
soil-forming parent material
geological formation
eco-geological survey
Jilin Province
