文献类型：期刊文献

中文题名：基于常量元素的沙漠(沙地)地表沉积物的关系初步研究

英文题名：Preliminary Research on the Relation among Surface Deposits of the Main Desert in China Based on Constant Elements

作者：郭翠萍[1] 郭浩[2] 辛智鸣[3]

第一作者：郭翠萍

机构：[1]北票市台吉林果服务站,辽宁北票;[2]中国林业科学研究院荒漠化研究所,北京;[3]中国林业科学研究院沙漠林业实验中心,内蒙古磴口

年份：2017

卷号：7

期号：6

起止页码：825-836

中文期刊名：地球科学前沿（汉斯）

基金：国家重点研发计划(2016YFC0501004);国家自然科学基金项目(41371500)。

语种：中文

中文关键词：沙尘暴源区;常量元素;风化;关系

分类号：P9

摘要：为了解中国主要沙漠地表沉积物之间的关系,分别在毛乌素沙地、库布其沙漠、乌兰布和沙漠、腾格里沙漠、巴丹吉林沙漠、塔克拉玛干沙漠和柴达木沙漠取样,分析了7种常量元素(Na、K、Ca、Mg、Al、Fe、Si)含量。分析结果表明:七大沙漠(沙地)地表沉积物的Mg和Ca含量有较大差异;其地表物质都处于风化初级的脱Ca、Na阶段。按风化程度可划分为三个区域:1) 毛乌素沙地。2) 柴达木沙漠和塔克拉玛干沙漠。3) 库布其沙漠、乌兰布和沙漠、腾格里沙漠和巴丹吉林沙漠;洛川黄土的常量元素组成与塔克拉玛干沙漠和柴达木沙漠十分接近,证明黄土高原降尘来自塔克拉玛干沙漠和柴达木沙漠。
To understand the relation among China’s major deserts, sampling in the Chinese major desert rejoins including Mu Us sand landy, Hobq desert, Ulan Buh desert, Tengger desert, Badain Jaran desert, Taklimakan desert and Qaidam desert, a total of 49 samples were obtained and the constant elements (including Na, K, Ca, Mg, Al, Fe, Si) were analyzed. The result shows that the maximum coefficients of variation of total elements are Mg and Ca. The weathering characteristics analysis showed that the above regions are in the primary stage of weathering that losing Ca, Na. According to the degree of weathering the above regions can be divided into three regions: 1) Mu Us sand landy. 2) Qaidam desert and Taklimakan desert. 3) Hobq desert, Ulan Buh desert, Tengger desert, Badain Jaran desert. Major element characteristics of Luochuan loess are very close to Taklimakan desert and Qaidam desert, and different from other regions. The result proved that dust from the Loess Plateau comes from the Taklimakan desert and Qaidam desert.