ISSN 1006-3021 CN11-3474/P
Published bimonthly started in 1979
腾冲火成岩分布地区流域重金属元素迁移富集规律
  
关键词:Tengchong, Yunnan  migration and enrichment of heavy metals  soil  sediment
基金项目:国家重点研发计划项目“高黎贡山生态功能提升与入侵植物物种防控技术”(编号: 2022YFF1302401)
作者单位E-mail
赵忠强 昆明理工大学国土资源工程学院 229116062@qq.com 
夏顶洪 昆明理工大学国土资源工程学院  
张佳琳 昆明理工大学国土资源工程学院  
李振阳 昆明理工大学国土资源工程学院  
曾丽源 昆明理工大学国土资源工程学院  
宋垠先 昆明理工大学国土资源工程学院  
何洪鸣 华东师范大学地理科学学院
中国科学院水利部水土保持研究所 
 
陈忠 昆明理工大学国土资源工程学院 qwchenzhong@163.com 
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摘要:
The Migration and Enrichment of Heavy Metals in Tengchong Watershed with Volcanic Rock Distribution
      While the impact of heavy metal pollution from human activities is significant, the impact of heavy metal pollution in the watershed should not be ignored. The high geological background of the igneous rock distribution area often contains high levels of transition metal elements, including Cr, Ni, and Cu, which are mainly found in soils and sediments in the watershed. These metals can cause persistent ecological harm to the watersheds. To understand the migration and enrichment patterns of heavy metal elements in the soils and sediments of igneous areas, we studied two watersheds, Longchuan River and Shahe River, in the distribution area of Tengchong igneous rocks in Yunnan Province. Systematic samplings of bedrock, soil and sediment were performed. The results showed that the mineral composition of sediments and soils in the both watersheds consisted mainly of quartz, feldspar, clay minerals, and a small amount of carbonate. With a decrease in feldspar during the weathering process, the clay minerals increased significantly, and the heavy metal elements were enriched with the increase of clay minerals. The contents of Cr and Ni were enriched in soils with a linear relationship with the total clay minerals (Cr: R2 = 0.381 7; Ni: R2 = 0.579 7). The contents of Cr, Ni, Zn, and Pb in sediments were linearly related to kaolinite and mica illite mixed layer (R2 = 0.43–0.72). Heavy metals such as Cu, Zn, and Pb were enriched in sediments, and their mass transfer coefficients were linearly related to kaolinite, mica, and illite mixed layers in Longchuan River sediments (R2 = 0.58–0.79). Clay minerals play an important role in the enrichment and transport of heavy metal elements.
ZHAO Zhongqiang,XIA Dinghong,ZHANG Jialin,LI Zhenyang,ZENG Liyuan,SONG Yinxian,HE Hongming,CHEN Zhong.2024.The Migration and Enrichment of Heavy Metals in Tengchong Watershed with Volcanic Rock Distribution[J].Acta Geoscientica Sinica,45(4):623-636.
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