【摘要】 浦阳江下游的河道变迁事关整个浙东地区的河湖水利体系变迁,研究意义十分重大。关于浦阳江下游河道历史时期的流向,历来有多种不同观点,陈桥驿教授在二十世纪八十年代推翻明代以来的说法,近年来朱海滨教授通过对史料的再考证,指出陈教授对宋、明地方史料判读的失误,否定了其关于浦阳江下游河道变迁的观点。朱教授关于渔浦、临浦等地名的考辨十分有益于对问题的认识,但浦阳江下游河道明中期之前一直东流的观点可能仍需讨论。本文认为浦阳江下游在唐代之前西出渔浦,散漫北流,唐后期至南宋时东西分流,南宋至明时主流东入三江口,明后期主道复归西流。浦阳江下游河道的流向既受制于萧绍地区东西地形地势的对比,也与钱塘江出海口门的南北摆动密切相关。从东西地形地势特点的对比而言,浦阳江西出由西北向汇聚钱塘江,比之迂回曲折而东注入海,比降更大,流速更快,流路则更短。浦阳江这一顺直的西北向流路,则取决于其地质背景上的地层断裂线。更多还原

【Abstract】 The river trail transformation in the downstream of Puyang is of great importance to the whole of the water system in Zhedong area, the academic value is extremely significant. Over the years, there have been several opinions on the flow direction of the river in downstream Puyang, Professor Cheng managed to overturn the idea formed since Ming Dynasty during the 1980 s, the evidence that Professor Zhu found in historical articles in recent years pointed out the errors of Professor Cheng in his understanding of the localized historical articles during the Song and Ming Dynasty, in turn denying his opinions on the transformation of downstream Puyang. The research that Professor Zhu made on the names of Yupu and Linpu can be very beneficial to the understanding of the problem, but the idea of downstream Puyang flowing toward the east before Mid-Ming Dynasty might still require discussion. This paper believes that downstream Puyang exits Yupu from the west before Tang Dynasty, and spreading out North-ward, later separating in both east and west during the late Tang Dynasty until south Song Dynasty, after that mainly flowing east into Sanjiangko from South Song Dynasty to Ming Dynasty, and in the late-Ming the main course returns to the west. The flow direction of downstream Puyang is both limited by the difference in the landscape of eastern and western Xiaoshao, and closely related to the back and forth movement of the exit to the sea of Qiantang River in southern and northern directions. Comparing the specialty of eastern and western terrains, Puyang exits through the west and flows toward Qiantang River from north-west, and as it makes its way easy into the sea, the more descent it completes, and in turn causing increased flow speed, then making the distance of flow even shorter.As for the straight north-west direction of Puyang, it depends on the fault line in its geological background.更多还原