干旱区生态环境知识资源中心(Arid): 青海省海东市平安区土壤Se的地球化学特征

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	青海省海东市平安区土壤Se的地球化学特征
其他题名	Geochemical Characteristics of Se in Soil of the Pingan District, Haidong City, Qinghai Province
	张亚峰 1; 苗国文 1; 马强 2; 黄强 1; 姬丙艳 1; 姚振 2; 田兴元 1
来源期刊	地球与环境
ISSN	1672-9250
出版年	2019
卷号	47 期号:1 页码:74-80
中文摘要	通过对平安区表层土壤样品的系统采集,测定了Se及其它元素的含量,研究了区内土壤Se的地球化学特征,探讨土壤Se富集机理。结果表明,表层土壤Se处于0.04~5.79 mg/kg之间,均值为0.29 mg/kg,富Se(Se≥0.4 mg/kg)和足Se(0.175≤Se<0.4 mg/kg)土壤面积分别为121.4 km~2和464.1 km~2,总共占平安区总面积的75.1%,主要分布在古-新近纪棕红色泥岩风化物和第四纪冲洪积物为母质的土壤区。富Se土壤存在两个区带,分布位于平安盆地和拉脊山。平安区Se富集机理主要有两种:平安盆地Se与Sr、Mo活动相近,在咸水、干旱、氧化的沉积环境与盐类物质同时发生富集;拉脊山Se与Cu、S、Mo活动相近,与铜硫化物伴生并受表层高有机质吸附所致。
英文摘要	Se and other elements were analyzed in surface soils collected from the Ping’an district to identify the geochemical characteristics and enrichment mechanism of Se. The results showed that contents of Se in soils were in a range of 0.04-5.79 mg/kg, with an average of 0.29 mg/kg. The areas of Se-rich and Se-abundance soil were 121.4 km~2 and 464.1 km~2, respectively, which accounted for 75.1% of the region area, parent materials of these soils were Paleo-Neogene red mudstone and Quaternary alluvial. The Se-rich soils appeared in the Ping’an Basin and the Laji Mountain. There could be two main enrichment mechanisms for Se in the Ping’an district, that is, Se, whose geochemical behavior was similar to those of Sr and Mo, enriched in salt water and arid environment of the Ping’an basin; Se, whose geochemical behavior was similar to those of Cu, S and Mo, enriched by being symbiotic with copper sulphides and adsorbing by organic matters of surface soils in the Laji Mountain.
中文关键词	硒 ; 土壤 ; 地球化学特征 ; 富集机理 ; 平安区
英文关键词	Selenium soil geochemical characteristics enrichment mechanism Ping’an district
语种	中文
国家	中国
收录类别	CSCD
WOS类目	GEOLOGY
WOS研究方向	Geology
CSCD记录号	CSCD:6428784
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/239026
作者单位	1.青海省第五地质矿产勘查院, 西宁, 青海 810099, 中国; 2.青海省第五地质矿产勘查院;;吉林大学地球科学学院, ;;, 西宁;;长春, ;; 810099;;130012
推荐引用方式 GB/T 7714	张亚峰,苗国文,马强,等. 青海省海东市平安区土壤Se的地球化学特征[J],2019,47(1):74-80.
APA	张亚峰.,苗国文.,马强.,黄强.,姬丙艳.,...&田兴元.(2019).青海省海东市平安区土壤Se的地球化学特征.地球与环境,47(1),74-80.
MLA	张亚峰,et al."青海省海东市平安区土壤Se的地球化学特征".地球与环境 47.1(2019):74-80.