坝地淤积，抬高了侵蚀基准面，可以防止沟道下切和沟岩扩张；
Silting in dams raise the erosion base. This can prevent guilybed from cutting down, and banks from expanding;
基准面有三个不同的概念，即侵蚀基准面、沉积基准面和基准面。
There are three different conceptions about base-level that are base level of erosion,...
基准面有三个不同的概念，即侵蚀基准面、沉积基准面和地层基准面。
There are three different conceptions about base-level that are base level of erosion, base level of deposition and stratigraphic datum, respectively.
在此沉积时期，湖盆开始较快速地水退，侵蚀基准面下降，河流搬运能力增大，物源供给充足。
At this sedimentary period, the water in Lake Basin began to recede fleetly, the base level of erosion grew down, the schlep ability of river grew up, and the supply of source was abundant.
在此沉积时期，湖盆开始较快速地水退，侵蚀基准面下降，河流搬运能力增大，物源供给充足。
At this sedimentary period, the water in Lake Basin began to recede fleetly, the base level of erosion grew down, the schlep ability of river grew up, and the supply of source was abundant.
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