为保护好兰州市区越冬雁鸭类，本文对改善城市环境结构提出了几点建议。
In order to protect the Anseriformes in Lanzhou, suggestions for the improvement of the urban environmental structures are given here.
一些鸟类如针尾鸭和海鸭等的数量仍然在下降，但是大多数雁类的数量都有了明显增加，很多鸭子的数量也保持稳定。
Lesser Scaup Aythya affinis, Northern Pintail Anas acuta, and several sea ducks are showing troubling declines, but most geese are increasing dramatically and many ducks have held steady.
一些鸟类如针尾鸭和海鸭等的数量仍然在下降，但是大多数雁类的数量都有了明显增加，很多鸭子的数量也保持稳定。
Lesser Scaup Aythya affinis, Northern Pintail Anas acuta, and several sea ducks are showing troubling declines, but most geese are increasing dramatically and many ducks have held steady.
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