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蘇北地勢與沂河泛濫 蘇北是黄河淮河的冲積平原,鲁南、皖北、豫東南的河流,大部份皆經過蘇北流入大海。這些河流總稱爲淮河水系,淮河水系出以沂、泗、沭爲主要河道。古代淮
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蘇北地勢與沂河泛濫 蘇北是黄河淮河的冲積平原,鲁南、皖北、豫東南的河流,大部份皆經過蘇北流入大海。這些河流總稱爲淮河水系,淮河水系出以沂、泗、沭爲主要河道。古代淮河水系的河道都是有正軌的,自從黄河奪淮以後,水系紊亂,後来黄河雖然早已北遷,而由於淮河故道淤塞,各河道已經無法復原了。沂
Northern Jiangsu topography and Yi River flood North Jiangsu is the alluvial plain of the Huaihe River, southern, northern Anhui, southeastern Henan rivers, most of them all through the Northern Jiangsu into the sea. These rivers are collectively referred to as the Huaihe River, and the Huaihe River is dominated by Yi, Si and Shu rivers. Since ancient times, the Huaihe River system has regular watercourses. Since the Yellow River captured the Huaihe River, the water system was disorganized. Later, although the Yellow River had already moved northward, due to siltation of the Huaihe River, the rivers could not be restored. Yi
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