中国地质调查2024，Vol.11Issue(4)：62-71,10.DOI:10.19388/j.zgdzdc.2023.183
贵州石漠化区基岩风化地球化学过程及生态地质效应
Geochemical process and ecogeological effects of bedrock weathering in the rocky desertification area of Guizhou Province
摘要
Abstract
Rocky desertification is widely distributed in karst areas of Southwest China,especially in Guizhou Province,posing a serious threat to the local ecological environment security.In order to clarify the internal rela-tionship between the bedrock weathering and the degree of rocky desertification,the authors in this paper compre-hensively analyzed the content of major and trace elements and the law of migration and evolution,mineral compo-sition characteristics,and the ability of weathering and soil formation for the rocky desertification sections with dif-ferent desertification degree in Guizhou Province.The results show that the soil material in rocky desertification area is the result of soluble material dissolution in carbonate rocks and the continuous accumulation of acid insolu-ble material in situ.The rocky desertification sections with different degrees are in a high degree of weathering,and mineral weathering trend in sections,also shows that the higher the degree of rocky desertification,the higher the degree of soil layer weathering phenomenon.The development of rocky desertification is closely related to the migration model of elements in the process of bedrock weathering.The higher the content of soluble elements in carbonate bedrocks,the less the residual soil material produced by bedrock weathering,and the higher the devel-opment degree of rocky desertification.The analysis of the geochemical characteristics of bedrock and ecological geological effects of weathering in the rocky desertification area could provide some references for the study of the genetic mechanism of rocky desertification,and is also of great significance to the rocky desertification controlling and the promotion of the sustainable development of regional economy.关键词
生态地质/基岩风化/地球化学/石漠化/碳酸盐岩Key words
ecogeology/bedrock weathering/geochemistry/rocky desertification/carbonate rocks分类
天文与地球科学引用本文复制引用
黄燕鹏,刘建宇,张策,揭文辉,亢益华..贵州石漠化区基岩风化地球化学过程及生态地质效应[J].中国地质调查,2024,11(4):62-71,10.基金项目
中国地质调查局"生态地质调查工程(编号:0703)"和"全国地球关键带遥感地质调查(编号:DD20190536)"项目联合资助. （编号:0703）
