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		1961—2017年基于地面观测的新疆积雪时空变化研究
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			Spatial-temporal variation of snow cover in Xinjiang based on surface observation from 1961 to 2017
			 
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		 图3. 1961—2017年新疆区域冬季最大积雪深度变化  | 
	
Fig.3. Annual variations of maximum snow depth in the Xinjiang (a), in Northern Xinjiang (b), in the Tianshan Mountains (c) and in Southern Xinjiang (d)  | 
	
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