中国地质2024，Vol.51Issue(2)：650-662,13.DOI:10.12029/gc20201220002
贵州省惠水县涟江大坝土壤硒分布特征及影响因素研究
Distribution characteristics and influencing factors of Selenium in soil from Lianjiang Dam in Huishui County,Guizhou Province
摘要
Abstract
This paper is the result of environmental geological survey engineering. [Objective]Lianjiang Dam is located in Huishui County of Guizhou Province.To find out the Se distribution features of soil in Lianjiang Dam,337 surface soil samples,4 soil mother rock samples and 16 soil profile samples were collected,and the contents of Se,nutrient elements and heavy metal elements such as As、Cd、Cr、Cu、Hg、Ni、Pb、Zn were analyzed and determined.[Methods]The contents of Se,nutrient elements and heavy metal elements in the samples from surface soil,soil mother rock and soil profile were compared and the Se distributions features of soil were evaluated based on correlative analysis method.[Results]It showed that the soil in this area were acidic with the contents of Se in the soil from 0.19 to 3.65 mg/kg.The contents of nutrient elements such as P,B and SOM in the soil were high.The average Se values of surface soil of different mother rocks in this area appeared the transformation law:Upper Carboniferous limestone>Middle Permian Maokou Formation limestone>Middle Permian Qixia Formation limestone>Upper Cretaceous Maotai Formation sandstone>Middle Triassic Luolou Formation limestone>Middle Triassic Bianyang Formation clastic rocks.The Se contents of soil profile in this area decreased with the depth deepening.[Conclusion]The Selenium-rich soil is abundant in this area,mainly of medium and high.The area of selenium-rich soil is about 42.94 km2.There is a significant positive correlation between Se and SOM,while a significant negative correlation between Se and K2O,and pH in soil.关键词
硒/土壤/生态环境/茅口组灰岩P2m/茅台组砂岩K2m/环境地质调查/涟江大坝/惠水/贵州省Key words
Se/soil/ecosysterm/Maokou Formation limestone(P2m)/Maotai Formation sandstone(K2m)/environmental geological survey engineering/Lianjiang Dam/Huishui/Guizhou Province分类
天文与地球科学引用本文复制引用
息朝庄,张鹏飞,吴林锋,杨茗钛,范云飞,夏浩东..贵州省惠水县涟江大坝土壤硒分布特征及影响因素研究[J].中国地质,2024,51(2):650-662,13.基金项目
"贵州省耕地质量地球化学调查评价"(黔耕调 2017-03)和湖南省自然科学基金省市联合基金项目(2022JJ50277)联合资助. Supported by the projects of Geochemical Survey and Evaluation of Cultivated Land Quality in Guizhou Province(No.2017-03)and Hunan Province Natural Science Foundation of Provincial and Municipal Joint Fund Project(No.2022JJ50277). （黔耕调 2017-03）
