THE RECORD OF CL~- AND SO_4~(2-) IN THE CHANGCE ICE CORE

The following points are revealed from analyzing the variations of anions( Cl-? SO2-4) of a 18.7 m ice core in the Changce Ice Core. The concentrations of anions( Cl-? SO2-4) decreased gradually in the courses of their fluctuations for 90 years in the last century and the periodic variations were similar between the Cl- and SO2-4 ,but the variation ranges of anions in the late-term were smaller than that in the early-term and medium-term in the last century . As a whole, the gradual decrease of concentrations of anions was consistent with the increase of temperature, but they were not parallelism every time. They came from the crustal materials and saline in Tibetan Platea. It is found that there is relationship between the atmosphere ingredient and the variations of the environment and the variations of climate, and that Asia dust is a mainly source in the global environmental variations.