Research Summary about Climatic Change and Chinese Loess Plateau Evolution

Based on the domestic current researches,the relations between climatic change and Chinese Loess Plateau evolution during the Quaternary are summarized,and the main characteristics can be listed as follows: ①the crucial factors of Loess Plateau formation are the serial otherness structural variation of Chinese mainland caused by the Himalayan Syntaxes from the Tertiary;②during the Pleistocene the strong wind caused by Tibetan Plateau apophysis brings great deal of power-dust from the inland desert in middle Asia zone to Loess Plateau zone,which was formed accordingly;③present monsoon occurred after Tibetan Plateau had reached certain height during the Pleistocene,then the higher of Tibetan Plateau is,the stronger of the barrier against summer monsoon is. The warm and wet climate in Loess Plateau turned into cold and drought,and the types and distribution of vegetation adjusted accordingly;④the adaptability of vegetation could repeat according to climatic changes,namely the distributing zone moves from north to south on the basis of climatic changes in temperature and precipitation;⑤during the Pleistocene natural corrosions played great role in soil and water losses in Loess Plateau,and during the Holocene the soil and water losses accelerated because of human activities;⑥soil and water losses in Loess Plateau are influenced by the geological condition,precipitation,vegetation and human activity,and its spatial variety is obvious.