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过去2000年黄河中下游气候与土地覆被变化的若干特征
郑景云1,4, 文彦君2,3, 方修琦3
Changes of climate and land cover in the middle and lower reaches of the Yellow River over the past 2000 years
ZHENG Jingyun1,4, WEN Yanjun2,3, FANG Xiuqi3

图5. 历史时期黄河下游地区形成的冲积扇范围、三角洲和公元前4世纪至今的主要古河道示意图[15,104,105]

Figure 5. Schematic map of the alluvial fans and deltas formed in the lower reaches of the Yellow River during different periods in the historical time and the main paleo-channels since 400BC [15,104,105]