shoreward zonation

The former one which is called sourceward zonation which is related with erosional datum plane of river, while the latter one called shoreward zonation which reflects the interrelation between vegetations and the moisture.
前者與河流的侵蝕基準(zhǔn)面有關(guān)，稱(chēng)為“溯源成帶性”；后者則反映植被與水分的關(guān)系，稱(chēng)為“岸帶成帶性”。