The Holocene Vegetation Change in Difference Area of the Chinese Loess Plateau

The Chinese Loess Plateau has been demonstrated to be one of the most sensitive areas to large-scale climate changes.The reconstruction of paleoclimatic changes in this region is expected to significantly improve our understanding of the mechanisms and processed of large-scale climate changes.Pollen data from 24 sites in the Chinese Loess Plateau were reviewed to document regional patterns of Holocene vegetation and climate change.Vegetations at bedrock mountain and valley switched forest,while,vegetation in the Yuan and the transitional zone between loess and desert changed between steppe and desert steppe and there was no natural forest.Considerating of uncertainties in the chronologies,those pollen data,in spite of differ area,suggested that the similar climatic characteristics during Holocene,e.g.,arid on early and late Holocene while warm and humid on the middle Holocene.