大同盆地晚更新世以来气候变化

为了更好的了解大同盆地过去气候的变化过程，找出其气候变化规律，预测未来气候变化趋势，更好地指导农业生产。研究通过对沉积剖面地层的观察与样品的测年，运用磁化率和粒度指标，恢复了大同盆地晚更新世以来的气候变化：整体呈现出暖湿—冷干—暖干的气候旋回特征，分为上更新世许家窑组暖湿期、马兰组干冷期及全新世暖干期，并且气候有逐渐干旱化趋势。部分学者对而近些年降水与气温变化的研究以及未来气候趋势的预测，更证实了这一结论的合理性。总之，大同盆地晚更新世以来气候总体呈干旱化趋势，这一结论将为本区干旱化农业发展政策的制定提供可靠的科学依据。

The Climatic Change In DaTong Basin Since the Late Pleistocene

The paper aims to find out the process of climate change in Datong Basin, find out its change rule, predict the trends of climate change in the future, and direct local agricultural production better. To observe the formation of the sedimentary section and dating of samples, use the grain size and magnetic susceptibility analysis, and restore the climate change since the late Pleistocene in Datong Basin. It shows a warm and wet—cold and dry —warm and dry climate cycles: the Late Pleistocene of the Xujiayao Group is warm-wet climate; Late Pleistocene of the Malan Group is dry-cold climate; Holocene is warm-dry, which shows a gradual dry and warm climate trend. Some scholars has predicted that the future climate according to recent changes on precipitation and temperature, which confirmed the conclusion is reasonable. In short, the overall climate was dry trend since the late Pleistocene in Datong Basin, which will provide reliable scientific basis for the development of this district droughty agricultural development policy.