| 黄土高原现代自然降尘的特征——以固原安塞为例 |
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| 引用本文： | 梁剑鸣,周杰,何忠,刘卫国,梁银丽,程积民.黄土高原现代自然降尘的特征——以固原安塞为例[J].海洋地质与第四纪地质,2009(1). |
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| 作者姓名： | 梁剑鸣 周杰 何忠 刘卫国 梁银丽 程积民 |
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| 作者单位： | 中国科学院地球环境研究所黄土与第四纪地质国家重点实验室;中国科学院研究生院;中国科学院水利部水土保持研究所; |
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| 基金项目： | 黄土与第四纪地质国家重点实验室自主部署项目(LQ0705) |
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| 摘 要： | 收集了宁夏固原2007年5月至2008年4月的12个降尘样品,陕西安塞2007年5—8月、2008年3—11月的13个降尘样品,并分别在两个降尘采样点附近采集了2个自然表土样品,对样品进行了总有机碳、粒度、磁化率分析,结果发现两地降尘的总有机质含量在1.029%～6.634%之间。粒度特征显示近源搬运占主导地位,同时,工业污染产生的PM10以下颗粒物贡献较小。降尘磁化率比自然表土明显偏高,但季节变化不明显。
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| 关 键 词： | 降尘 有机碳 粒度 磁化率 黄土高原 |
CHARACTERIZATION OF MODERN DUSTFALL IN THE LOESS PLATEAU:A CASE STUDY OF GUYUAN AND ANSAI |
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| LIANG Jianming,ZHOU Jie,HE Zhong,LIU Weiguo,LIANG Yinli,CHENG Jimin.CHARACTERIZATION OF MODERN DUSTFALL IN THE LOESS PLATEAU:A CASE STUDY OF GUYUAN AND ANSAI[J].Marine Geology & Quaternary Geology,2009(1). |
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| Authors: | LIANG Jianming ZHOU Jie HE Zhong LIU Weiguo LIANG Yinli CHENG Jimin |
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| Institution: | 1 State Key Laboratory of Loess and Quaternary Geology;Institute of Earth Environment;Chinese Academy of Sciences;Xi'an 710075;China;2 Institute of Soil and Water Conservation;Ministry of Water Resources;Yangling 712100;3 Graduate University of Chinese Academy of Sciences;Beijing 100049;China |
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| Abstract: | To investigate the characteristics of modern dustfall in the Loess Plateau,12 dustfall samples were collected in May 2007 through April 2008 at Guyan in Ningxia Hui Autonomous Region,and 13 dustfall samples were collected from May through August 2007 and from March through November 2008 at Ansai in Shaanxi Province.In addition to the dustfall samples,2 samples of undisturbed top soil were also collected around each sampling site.Analysis of total organic carbon,grain size and magnetic susceptibility suggest... |
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| Keywords: | dust fall organic carbon grain size magnetic susceptibility |
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