Geochemical Characteristics and Influencing Factors of Selenium in the Xichang Area, Southwest China

IF 0.4 4区综合性期刊 Q4 ECOLOGY

Interciencia Pub Date : 2023-01-01 DOI:10.59671/9uxgr

Tong Li, Yong Huang, Youguo Li, Hong Liu, Li Shuai, Junbo Wang

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引用次数: 0

Abstract

Taking the Xichang area of China as an example, this study investigated factors affecting the geochemical characteristics of Se element by analyzing and comparing the environmental geochemical characteristics and temporal and spatial changes of Se in different rock formations, soil types, parent material layers, and soil layers. Analytical and statistical tests revealed that the content of Se in the soil of the study area ranged from 0.01 to 0.57 mg·kg-1, with an average value of 0.12 mg·kg-1, corresponding to a relatively low content. The orders of Se content in different materials are as follows: soil layer > soil parent material layer > rock layer in terms of the profile; Triassic continental clastic > Neogene-Quaternary continental clastic > Mesozoic intermediate-acid > Proterozoic intermediate-acid > Jurassic-Cretaceous continental clastic > Permian basic-ultrabasic = Sinian marine carbonate = Proterozoic volcanic clastic in terms of rock formations (parent rocks); and brown soil > yellow brown soil > dark brown soil > black felt soil > red soil > purple soil. The spatial distribution of Se exhibits distinct zoning and a good spatial coupling relationship with geological formations, rivers, topography, and geomorphology. The selenium content is mainly controlled by geological factors such as parent rock and parent material under different geological tectonic units, followed by clay minerals, organic matter such as Corg, S, N and element adsorption and fixation.

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西昌地区硒的地球化学特征及其影响因素

本研究以西昌地区为例，通过分析比较不同岩层、土壤类型、母质层、土层中硒元素的环境地球化学特征及时空变化，探讨影响硒元素地球化学特征的因素。分析和统计结果表明，研究区土壤硒含量在0.01 ~ 0.57 mg·kg-1之间，平均值为0.12 mg·kg-1，含量较低。不同物料中硒含量的排列顺序为:土层>土母料层>岩层剖面;三叠纪陆相碎屑>新近系—第四纪陆相碎屑>中生代中酸性>元古代中酸性>侏罗纪—白垩纪陆相碎屑>二叠系基性—超基性=震旦系海相碳酸盐岩=元古代火山碎屑(母岩);棕壤b>黄棕壤>深棕壤>黑毡土>红壤>紫色土。硒的空间分布具有明显的地带性，与地质构造、河流、地形地貌具有良好的空间耦合关系。硒的含量主要受不同地质构造单元下母岩、母物质等地质因素的控制，其次是粘土矿物、煤、硫、氮等有机质以及元素的吸附和固定作用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Interciencia 综合性期刊-生态学

CiteScore

0.80

自引率

25.00%

发文量

审稿时长

4-8 weeks

期刊介绍： Interciencia is the monthly multidisciplinary publication of the INTERCIENCIA Association. It is dedicated to stimulate scientific research, its humanitarian use and the study of its social context, specially in Latin America and the Caribbean and to promote communication between the scientific and technological communities of the Americas. Interciencia has been published uninterruptedly since 1976. Its Founding Director, Marcel Roche (endocrinologist and sociologist of science) was editor until 2008, and thereafter Miguel Laufer (neurobiologist) has been in charge. It has been included since 1978 in the Science Citation Index and other international indexes, and since 2008 it maintains an open access electronic version with material from 2005 onwards. The priority areas of the journal, without exclusion of other areas, are Agronomy, Arid Lands, Food and Nutrition, Biotechnology, Ecology and Environment, Energy, Innovation and Technology Transfer, Marine Resources, Non-renewable Resources, Science Education, Science Policy, Study and Sociology of Science, and Tropical Forests. Interciencia publishes in Spanish, Portuguese and English research and review articles, communications and essays, all of which are subjected to peer review. Additionally, it includes non-refereed sections such as Editorial, Letters to the Editor, Open Town Hall, Book Reviews and Upcoming Events. All the material submitted to the journal for publication and accepted by the Editorial Committee in view of its quality and pertinence is subjected to review by peer specialists in the corresponding fields of knowledge. Neither the INTERCIENCIA Association, nor the journal or the institutions to which the authors belong carry responsibility for the contents. Signing authors are responsible for the material published under their names.