Knowledge Resource Center for Ecological Environment in Arid Area
| 中国西风区黄土常量元素地球化学行为与古环境 | |
| 其他题名 | Geochemical behavior of major element of loess in westerly area of china and paleoclimatic implications |
| 叶玮 | |
| 来源期刊 | 干旱区地理
 |
| ISSN | 1000-6060 |
| 出版年 | 2003 |
| 卷号 | 26期号:1页码:23-29 |
| 中文摘要 | 位于中国西风区新疆伊犁盆地黄土与古土壤样品的常量元素分析表明，其烧失量和SiO2含量与样品的碳酸盐含量正相关。黄土与古土壤SiO2含量没有明显差别，但Al、Fe、Mn和K在古土壤中发生一定的分异，代表了相对强的成壤作用。与黄土高原相比，伊犁盆地 末次间冰期古土壤富钛、铁、锰、镁和钙（个别样品除外），而黄土高原S1更加贫钠和钾，而且钙含量很低；末次冰期黄土富锰、镁和钙，贫纳和钾，而黄土高原L1以富钙贫钠、钾为特征。常量元素地球化学行为揭示，伊犁黄土与古土壤较黄土高原同期黄土与古土壤形成于更加干旱的气候环境中。 |
| 英文摘要 | Yili basin is located at the northwest of China where the climate is influenced by westerlies year in year out and loess is widespread. According to the dating of TL, most of the loess accumulated during the last glaciation. 48 samples of loess and paleosols collected from Yili area of China were analyzed. The major element composition were measured by a VA-320A X-ray fluorescence spectrometer. Analytical uncertainties are less than 2% for all major element and the loss ignition was obtained by weighting after one hour of caldination at 950℃. The result shows that the loss ignition of loess and paleosol are positively related to the concentration of CaCO_3 and the percentage of SiO_2 as well as. The relative coefficient(R~2) are 0.9548 and 0.7029 respectively. The paleosol can be distinguished by a relatively high content of Al,Fe,Mn and K from the loess, even though the percentages of SiO_2 are riot different significantly.This implies that the pedogenisis was stronger during the paleosol developing and the soil was formed under an oxidation and alkaline condition. The paleosol developed, during last glaciation in Yili basin is rich in Ti,Fe,Mn,Mg and Ca,while SI at the Loess Plateau is poor at Ca,Na and K contrasting to that of the Loess Plateau,the Yili loess(L1) is characterized by a high content of Ca,Mg and Mn All of these suggest that the Yili loess and paleosol developed under more arid climate. |
| 中文关键词 | 元素地球化学行为 ; 西风区 ; 黄土 ; 古环境 ; 新疆 ; 中国 ; 热释光测年 |
| 英文关键词 | Westerly area loess paleoenvironment Yili Xinjiang |
| 语种 | 中文 |
| 国家 | 中国 |
| 收录类别 | CSCD |
| WOS类目 | MINERALOGY |
| WOS研究方向 | Mineralogy |
| CSCD记录号 | CSCD:1280424 |
| 资源类型 | 期刊论文 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/204002 |
| 作者单位 | 浙江师范大学旅游与资源管理学院, 金华, 浙江 321004, 中国 |
| 推荐引用方式 GB/T 7714 | 叶玮. 中国西风区黄土常量元素地球化学行为与古环境[J],2003,26(1):23-29. |
| APA | 叶玮.(2003).中国西风区黄土常量元素地球化学行为与古环境.干旱区地理,26(1),23-29. |
| MLA | 叶玮."中国西风区黄土常量元素地球化学行为与古环境".干旱区地理 26.1(2003):23-29. |
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