| Lake Gas Kure is in the Qaidam Basin, which situated at the northeastern Tibetan Plateau, is in the central part of the arid Asia, which is the biggest non-zonal arid area in temperate zone on the earth, and is the conjunction area among the westerly jet, southeastern Asia Monsoon and southwestern Asia Monsoon that influence the climate of China. Therefore, this very sensitive to the regional and global changes. The study on the climate change history in the arid-cold area of the northeastern Tibetan Plateau is of great theoretical and applied importance.On the basis of tie points derived by matching the observed magnetostratigraphy to the geomagnetic polarity timescale (GPTS), an orbitally tuned timescale for core GSK0305 was developed, which assigns an age of 1320 kyr for the base of the core. The GSK0305,222 meters drill of Lake Gas Kure was to 2cm intervals continuous sampling, on 243 samples of 34 kinds of elements and oxides,9,788 samples of the magnetic susceptibility, color and some grain size indicators were tested.22 major and trace element and oxides analysis of correlation showed that the main chemical components and trace elements in the same trend, such as Al2O3, MgO, K2O, SiO2, Fe2O3, and Li, V, Cr, Co, Ni, Cu, B, Ga consistent trends; SiO2 and Na2O are basically the same distribution; metal elements Cu, Zn has a high correlation coefficient (0.872), which other researchers (Erik,2000) taken these two as negative elements in lake sediments, this may be because of the distribution of Cu in sediments mainly reflects the biological activity of the redox state of the reflected Secondly, Cu adhesion in sediments due to the oxidation of biogenic debris is reduced; trace elements Ba and Ti, Cr high correlation, the correlation coefficient above 0.9; elements on the ratio of SiO2/Al2O3, Sr/Ba, Rb/Sr indicates the performance of the environmental significance of the same, with the deep-sea oxygen isotope comparison of the performance of the LR04 higher consistency.In study of GSK0305, magnetic susceptibility and oxygen isotope curves has the same features of a typical jagged, and it has the same mechanism of the Pannonian basin:glacial-interglacial cycles of the control of river runoff due to climate change and changes in transport capacity into Gas Kure Lake west of the alluvial plain strong magnetic minerals (detrital origin) levels, and ultimately lead to magnetic susceptibility values.Principle component analysis (PCA) was used to identify the main factors that control elemental distribution in sediments and to add interpretative strength to the geochemical behavior of selected major and trace elements. Three important factors were identified using factor analysis method, which control chemical composition of sediments, such as catchment erosion, diagenetic modification and endogenic calcium carbonate precipitation. Further research indicates that the factor score curves of catchment erosion and endogenic calcium carbonate precipitation can be used to represent the changes of humidity and temperature respectively, which provides a new effective approach to palaeoclimate reconstruction. On the basis of paleomagnetism and magnetostratigraphy, the evolution history of the regional climate and environment is evaluated. Climate proxies, such as Magnetic Susceptibility, Sediment Color Reflectance parameters, Grain size records were also evaluated, and it is revealed that the basic climate succession in the region of northwestern Qaidam Basin, northern Tibetan Plateau.
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