| 三峡库区坡地物质的地球化学特征--以三峡草堂河流域为例 |
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| 引用本文： | 陈可锋,杨达源,姜洪涛,周彬,徐永辉,刘庆友,董杰.三峡库区坡地物质的地球化学特征--以三峡草堂河流域为例[J].华东地质学院学报,2004,27(2):141-146. |
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| 作者姓名： | 陈可锋 杨达源 姜洪涛 周彬 徐永辉 刘庆友 董杰 |
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| 作者单位： | 陈可锋（南京大学城市与资源学系,江苏,南京,210093）;杨达源（南京大学城市与资源学系,江苏,南京,210093）;姜洪涛（南京大学城市与资源学系,江苏,南京,210093）;周彬（南京大学城市与资源学系,江苏,南京,210093）;徐永辉（南京大学城市与资源学系,江苏,南京,210093）;刘庆友（南京大学城市与资源学系,江苏,南京,210093）;董杰（南京大学城市与资源学系,江苏,南京,210093） |
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| 基金项目： | 国家自然科学基金项目"长江三峡库区地貌发育过程"资助(4072126) |
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| 摘 要： | 三峡水库建成后，三峡坡地物质成为三峡水库泥沙主要来源之一，三峡坡地物质的地球化学特征的研究对于三峡坡地水土保持与管理利用具有重要的意义。通过分析各坡度段物质的常量元素全量、磁化率特征以及粘土矿物种类等地球化学的特征，定性地说明了各坡度段从缓坡一斜坡一陡坡段风化作用强度依次减弱，相应的坡面侵蚀作用逐渐增强。而在相同坡度段，表层与一定深度物质的地球化学特征值变化不大，这说明土壤年轻化，成土作用比较弱。
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| 关 键 词： | 三峡库区 坡地物质 地球化学特征 草堂河流域 x射线荧光光谱仪 磁化率 |
| 文章编号： | 1000-2251(2004)02-141-06 |
| 修稿时间： | 2003年9月20日 |
The Geochemistry Characteristic of Weeathering Crust in the Three Gorge Areas-- The Example of CaoTang river drainage area in the Three Gorge Areas |
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| CHEN Ke-feng,YANG Da-yuan,JIANG Hong-tao,ZHOU Bin,XU Yong-hui,LIU qing-you,DONG jie.The Geochemistry Characteristic of Weeathering Crust in the Three Gorge Areas-- The Example of CaoTang river drainage area in the Three Gorge Areas[J].Journal of East China Geological Institute,2004,27(2):141-146. |
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| Authors: | CHEN Ke-feng YANG Da-yuan JIANG Hong-tao ZHOU Bin XU Yong-hui LIU qing-you DONG jie |
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| Abstract: | Slope substance will become one of the main sources of mud and sand in the three gorges areas after the three gorges reservior being built. It is very important to study the geochemistry characteristic of weathering crust in these areas for the preserve ,management and using of water and soil. It is shown that there are obvious differences in the weathering intensity of the different slope segment with the same depth, and the intensity is descending in sequence from the gentle slope to the incline and further to the stiff slope by analyzing the geochemistry characteristic of ordinary elements, clay mineral and susceptibility. While there are small differences in the geochemistry characteristic of surface layer and some depth segments in the same slope.It is shown that the soil is young and the forming soil action is weak. |
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| Keywords: | CaoTang river drainage area geochemistry characteristic Three Gorge Areas sloping fields |
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