Knowledge Resource Center for Ecological Environment in Arid Area
| 项目编号 | 41302211 |
| 半干旱岩溶区溶蚀作用的季节分异与影响机制 | |
| 黄奇波 | |
| 主持机构 | 中国地质科学院岩溶地质研究所 |
| 开始日期 | 2014 |
| 结束日期 | 2016 |
| 资助经费 | 250000(CNY) |
| 项目类别 | 青年科学基金项目 |
| 资助机构 | CN-NSFC（国家自然科学基金） |
| 语种 | 中文 |
| 国家 | 中国 |
| 英文简介 | In the semi-arid area, the carbon deposition or release associated with the impact of karst processes on the source and sink of atmospheric CO2 is an unresolved important issue within karstification and carbon cycle. the cause and influence mechanism for the presence of a small amount of irregular deposition on limestone tablet after corrosion test is not clear. This project, we choose typical karst watershed, in the semi-arid area, as our study area, and soil system within karst processes occur as research core. Through field dissolution experiments, scanning electron-microscopy, elemental chemical analysis, isotope tracing method, and testing analysis the content of soil organic carbon and soil inorganic carbon, and field measuring concentration of soil CO2 and soil moisture content, and observing the occurrence characteristics and variation of carbonate rock erosion and deposition during the wet season and dry season, we will analyze the deposit's material morphology, elemental composition and possible sources, and clarify the season dynamic characteristics and key affecting factors of karstification, and reveal the mechanism that the soil system affect the dissolution and deposition in karst processes, and investigate the suitability about the limestone tablet method used to estimate karst geological carbon sequestration in the semiarid area. The results will promote the research of karst carbon sinks in the northern arid karst area and provide scientific reference for the accurate calculation of karst carbon sink and the improvement of the global carbon cycle model. |
| 中文关键词 | 岩溶碳汇 ; 土壤碳酸盐 ; 溶蚀试片 ; 试片沉积物 |
| 来源机构 | 中国地质科学院岩溶地质研究所 |
| 资源类型 | 项目 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/346647 |
| 推荐引用方式 GB/T 7714 | 黄奇波.半干旱岩溶区溶蚀作用的季节分异与影响机制.2014. |
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