干旱区生态环境知识资源中心(Arid): 哈尔滨沙尘沉降物的化学风化特征及物源区意义

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	哈尔滨沙尘沉降物的化学风化特征及物源区意义
其他题名	Geochemical Records of Chemical Weathering Characteristics and Matter Source of Sand-Dust Weather Deposits in Harbin
	谢远云 1; 张丽娟 1; 何葵 1; 康春国 2; 臧淑英 1
ISSN	1672-0504
出版年	2009
卷号	25 期号:2 页码:79-84
中文摘要	对哈尔滨2006年3月10日沙尘沉降物的化学组成及化学风化特征进行研究,结果表明:SiO_2、Al_2O_3和TFe_2O_3含量分别为54.87%、13.27%和5.63%,三者之和达73.77%;CaO、MgO、K_2O、Na_2O、TiO_2、P_2O_5和MnO含量分别为3.78%、2.57%、2.63%、1.76%、0.77%、0.24%和0.11%.沉降物中的常量元素多表现为迁移淋失,Mn和Ti明显富集而Mg和Fe轻微富集,元素的迁移淋失率依次为:Na>P>K>Si>Al>Ca>Fe>Mg>Ti>Mn;微量元素除Nb、Sr迁移淋失外,其余元素表现出富集特征.与哈尔滨2002年沙尘沉降物、黄土高原第四纪黄土与古土壤、晚第三纪红粘土、镇江下蜀土及宣城风成红土等典型风成堆积物进行对比分析,(Al+Fe+Ti+Mn)/(Mg+Ca+K+Na)比值、成分变异指数ICV、CIA等化学风化参数及A-CN-K化学风化趋势图均显示,哈尔滨沙尘沉降物经历了低等化学风化程度,明显强于兰州黄土和古土壤,弱于洛川黄土,显著弱于洛川古土壤、西峰红粘土、镇江下蜀土和宣城风成红土.哈尔滨沙尘源区处于大陆化学风化的早期,气候生物状况好于西北地区,包括沙漠和黄土高原在内的西北地区不会是哈尔滨沙尘沉降物的物源区,或者至少不是主要物源区.
英文摘要	The chemical compositions and chemical weathering characteristics of sand-dust weather deposits on March 10,2006 in Harbin were studied in this paper. Based on the comparison with other aeolian-dust deposits,i. e. sand-dust deposits on 2002 in Harbin, Quaternary loess-palesol and late-tertiary red-clay in the Loess Plateau, Xiashu loess in Zhenjiang and aeolian dust red earth in Xuancheng of Anhui Province,the results show that the content of SiO_2,Al_2O_3 and TFe_2O_3 of sand-dust deposits on 2006 in Harbin is 54. 87%,13. 27% and 5. 63% separately,which occupy 73. 77% in all,and that the content of CaO,MgO, K_2O,Na_2O,TiO_2,P_2O_5 and MnO is 3. 78% ,2. 57% ,2. 63%,1. 76% ,0. 77%,0. 24% and 0.11% respectively. The most major elements in sand-dust deposits were migrated and leached, while the elements Mn and Ti were obviously enriched but Mg and Fe slightly enriched. According to the migration and leaching rate,the major elements are ranked in the following order:Na>P>K >Si> Al>Ca>Fe>Mg>Ti>Mn. Except the elements Nb and Sr,other trace elements were enriched during the chemical weathering process. The chemical weathering parameters,such as (Al+Fe+Ti+Mn)/(Mg+Ca+K+Na) ratio,ICV and CIA, and A-CN-K chemical weathering trending diagram revealed that the sand-dust deposits in Harbin underwent lowlevel chemical weathering,which was evidently much stronger than that of the loess and palesol in Lanzhou,little weaker than that of Luochuan loess,and obviously weaker than that of Luochuan palesol,red-clay in Xifeng,Xiashu loess in Zhenjiang and aeolian-dust red earth in Xuancheng. The chemical weathering experienced by sand-dust weather deposits in Harbin was formed in sand-dust source regions. And it is showed that the climatic and biologic status of the sand-dust source areas of Harbin sand-dust deposit is much better than that of northwest areas,and the sand-dust source areas of Harbin sand-dust deposit is in the early stage of continental chemical weathering. The northwest area including desert and loess plateau will not be matter source areas of sand-dust deposits in Harbin,or will not be the main source regions at least.
中文关键词	沙尘沉降物 ; 化学组成 ; 化学风化 ; 粉尘源区 ; 哈尔滨
英文关键词	sand-dust deposit chemical composition chemical weathering dust source area Harbin
语种	中文
国家	中国
收录类别	CSCD
WOS类目	METEOROLOGY ATMOSPHERIC SCIENCES
WOS研究方向	Meteorology & Atmospheric Sciences
CSCD记录号	CSCD:3555281
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/223389
作者单位	1.哈尔滨师范大学,地理科学学院, 哈尔滨, 黑龙江 150080, 中国; 2.哈尔滨学院,地理系, 哈尔滨, 黑龙江 150080, 中国
推荐引用方式 GB/T 7714	谢远云,张丽娟,何葵,等. 哈尔滨沙尘沉降物的化学风化特征及物源区意义[J],2009,25(2):79-84.
APA	谢远云,张丽娟,何葵,康春国,&臧淑英.(2009).哈尔滨沙尘沉降物的化学风化特征及物源区意义.,25(2),79-84.
MLA	谢远云,et al."哈尔滨沙尘沉降物的化学风化特征及物源区意义".25.2(2009):79-84.