evolution of Shule River alluvial fan
Shule river alluvial fan oasis
Yongding River alluvial fan
the Hunhe River alluvial fan
Alluvial River
冲积河床
冲积河道
冲积河流
冲积河川
冲积河
平原河流
滞流河
Jinshajiang River River Basin
river alluvial vegetable soil
the alluvial fan of Luanhe River
the Yellow River alluvial plain area
Yellow River alluvial plains
Alluvial fan
冲积扇形地
冲积扇
洪积扇
冲洪积扇
冲击扇
冲洪积扇地
扇状地
扇状冲积沙
堆积扇
coalescing alluvial fan