陕西黄土高原晚更新世环境变化

ENVIRONMENTAL CHANGE OF LATE PLEISTOCENE FOR LOESS PLATEAU OF SHAANXI PROVINCE

岐山剖面孢粉分析表明，黄土高原东南部晚更新世植被与气候变化可分为６个阶段和１３个小阶段。其中末次冰期的３个冷干阶段和２个温湿阶段被分别命名为秦家寨、岐山、坡头冰阶和尚家坡、杨家湾问冰阶。冰阶的植被以草原和森林草原为主，间冰阶的植被以落叶阔叶林为主。

Sporo-pollen material in Qishan section show that the change of vegetation and climate of Late Pleistocene can be divided into six stages and thirteen sub-stages in the southeast part of Loess Plateau. Three colddry stages and two temperatemoist stages of last glacial period are named Qinjiazhai glacial staircase, Qishan glacial staircaes,Potou glacial staircase, Shangjiapo interglacial staircaes and Yangjiawan interglacial staircase respectively. Steppe and forest-steppe were dominant during glacial staircases,and deciduous broadleaf forest were dominant during interglacial staircases. By comparision,we know that the environmental change of Late Pleistocene for Loess Plateau accords with that for adjacent areas as well as external areas.