云南鹤庆盆地是我国古气候研究的热点地区。1996年在古湖中心获取了深钻（HQ孔）岩芯。申请人对HQ孔做过较详细的磁性地层学、岩石磁学、环境磁学研究。但是，对于流域的物质磁性及气候变化对磁性矿物低温氧化的影响，流域物质向湖泊迁移过程中的磁性改变等缺乏了解。本申请拟选择云南鹤庆盆地为主要研究区域，以磁学为主要研究手段，辅以其它气候和环境指标，研究鹤庆盆地的岩石、土壤、河流、现代湖泊沉积物的磁学性质。同时研究流域物质运移到湖泊的输送过程中可能存在的磁性变化。在草海设置捕捉器，定期监测现代沉积物中磁性矿物可能发生的氧化、还原或者生物作用对磁性矿物的影响。研究不同气候条件下，灰岩上发育的红土中磁性矿物的低温氧化差异。将流域的和已经获取的鹤庆古湖深钻的资料结合起来研究，更好的理解深钻磁指标对于古气候古环境演化磁响应的机理。本研究也将有助于探讨流域（面）- 钻孔（点）相结合的环境磁学方法研究。

Heqing Basin (Yunnan) is one of the hot targets for paleoclimatic study in China. Detailed studies on its magnetostatigraphy, rock magnetism and environmental magnetism have been conducted. However, it is still not well understood for the magnetic properties of material from the catchment, and for the impacts of climatic changes on the low temperature oxidation of magnetic minerals, as well as for the changes of magnetic properties of material from the catchment during transported to the lake. Within applying project, mainly by means of magnetic proxy, as well as other climatic and environmental parameters, it is intended to study the magnetic properties of rocks, soil, river and modern lake sediments in Heqing Basin, and the changes of the magnetic properties of these materials during the transportation to the lake. Meanwhile, the trappers will be installed within the lake to capture the deposits on certain scheduled period, and the impacts of possible reduction, or oxidation, or biomagnetic processes of these deposits will be studied in detail. Furthermore, the difference of low-temperature oxidation of red soil weathered on limestone will be discussed. For better understanding magnetic response towards the paleoclimatic changes, magnetic investigation on the catchment will be combined with the acquired data from Core HQ. The applying project will explore the methodology to compare the magnetic properties of materials from both catchment and drilled deep core.