求翻译：规划实施后各梯级厂坝间将形成减水河段，尤其是规划前三个梯级的减水河段长度较长；减水河段内水域面积减少，水深变浅，浅滩裸露，部分深潭消失，水生生境萎缩。是什么意思？

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After all the planning and implementation as well as shore-factory will be formed by river and, in particular, pre-planning three rungs of the river length longer; the water in river waters are reduced, the water was shallow, and shallow depths, some nudity, aquatic habitats shrink.

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Planning after the implementation of formation water and river between the cascade dam, particularly planned water reach the length of the first three steps long; water and river waters in the area reduced, shallow depth, shallow exposed, some deep pools disappear, shrinking aquatic habitat.

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