| Carbonate weathering rates in the Jura Mountains, France-The influence of vegetation |
| |
| 作者姓名： | Senlin LU Longyi SHAO Minghong WU Zheng JIAO JONES T. P. |
| |
| 作者单位： | [1]Shanghai Apphed Radiation Institute, School of Environmental and Chemical Engineering, Shanghai University, Shanghai 201800, China [2]Department of Resources and Earth Science, China University of Mining and Technology, Beijing 10083, China [3]Department of Earth, Ocean and Planetary Sciences, Cardiff University, Cardiff, CFIO, 3YE, UK |
| |
| 摘 要： | In order to better understand what controls carbonate weathering rates, we report results from the Jura Mountains （East France）, an area exclusively composed of carbonate rocks. This region presents an altitude gradient increasing from 250 m to 1300 m. Over the basin, this gradient generates climatic contrasts of 5℃ and a runoff three times higher in altitude. This place offers a good opportunity for understanding the controlling factors of carbonate weathering. Contrary to thermodynamic calculations that predict the highest concentrations at low temperature, we observe that carbonate dissolution is two times higher at low elevation than in the mountains. This observation can only be explained by a variation in soil pCO2. In order to better constrain the observed variation in cation contents （principally Ca and Mg） of rivers, we used the ASPECTS ecological model （Rasse et al., 2001）. Based on both hourly climatic data, vegetation type and soil type, ASPECTS may reconstruct pCO2 in soil.
|
| 关 键 词： | 碳酸盐岩 风化作用 侏罗纪 植被 法国 |
Carbonate weathering rates in the Jura Mountains, France-The influence of vegetation |
| |
| Senlin LU Longyi SHAO Minghong WU Zheng JIAO JONES T. P..Carbonate weathering rates in the Jura Mountains, France-The influence of vegetation[J].Chinese Journal of Geochemistry,2006,25(B08):2-2. |
| |
| Abstract: | |
| |
| Keywords: | carbonate weathering rate Jura Mountains influence of vegetation France |
| 本文献已被 维普 等数据库收录！ |
|
