一条河的旅程

一张地理信息图,讲解一条河流从源头到入海的过程,画成俯视的流动地图。带标注的地貌——源头、支流、河曲、洪泛平原、牛轭湖与分汊三角洲——沿着蓝色河流穿过绿色土地注入青色海洋。沿途出现降雨、水坝与河畔小镇的图标。干净的扁平地图风格,清新的绿蓝配色,米白底,细等高线。左上角粗体标题「一条河的旅程」,一个上下游方向的小箭头图例,以及一个河岸剖面插图。

A geography infographic explaining a river system from source to sea, drawn as a top-down flowing map. Labeled features - source, tributaries, meanders, floodplain, oxbow lake and a branching delta - trace the blue river across green land into a teal ocean. Icons for rainfall, a dam and a riverside town appear along the way. Clean flat cartographic style, a fresh green-and-blue palette on cream, thin contour lines. Bold title 'Journey of a River' top-left, a small arrow legend for upstream and downstream, a cross-section inset of the riverbank.