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基于DEM的地球与火星格状沙丘对比分析
杨旭艳1(), 董治宝2(), 杨勤科1(), 李超2
Comparison of networked dunes in the Earth and the Mars based on DEM
Xuyan Yang1(), Zhibao Dong2(), Qinke Yang1(), Chao Li2

图7. 研究区高程梯度频率

Fig.7. Elevation gradient histogram of studied sites