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综述了近20年来新疆地区全新世高分辨率的孢粉记录,通过时间序列和空间格局的对比,初步认识了新疆地区全新世气候环境的变化特征与荒漠植被格局的演变规律.早全新世气候温暖干旱,北疆地区出现荒漠植被,南疆地区发育荒漠草原和荒漠植被,但荒漠植被在不同区域出现和持续的时间有差异.中全新世气候环境逐渐改善,北疆地区植被由荒漠类型向荒漠草原和草原转变,南疆地区仍以荒漠、荒漠草原为主.晚全新世气候环境趋向干旱化方向发展,北疆地区以荒漠草原和草甸草原占优势,但是旱生成分明显增加,南疆地区覆盖荒漠植被.新疆不同区域全新世植被演替具有一定的可比性,也存在差异性,而研究地点的地理位置、地形地貌、海拔、天山山脉的阻挡和西风环流的演化等因素可能是导致这种差异的原因.
The high-resolution Holocene pollen records in Xinjiang in the recent 20 years are summarized. By comparing the time series and spatial patterns, the changing characteristics of the Holocene climatic environment and the evolution of the desert vegetation pattern are preliminarily understood. The Early Holocene climate In the warm and arid climate, there appeared desert vegetation in northern Xinjiang and desert grassland and desert vegetation in southern Xinjiang, but the occurrence and duration of desert vegetation in different regions were different.The climate environment of Middle Miocene gradually improved, and the vegetation in northern Xinjiang changed from desert type Desert steppe and grassland change, the desert area and desert steppe still dominate in southern Xinjiang.Climate environment tends to develop in the direction of aridification in the late stage of Holocene, while desert steppe and meadow steppe prevail in northern part of Xinjiang, The Xinjiang region covers the desert vegetation.The succession of Holocene vegetation in different regions of Xinjiang is comparable and different, and the geographical location, topography, altitude, the blockage of Tianshan Mountains and the evolution of westerly circulation may be The reason for this difference.