A wetland is an area of land whose soil is saturated with moisture either permanently or seasonally.Such areas may also be covered partially or completely by shallow pools of water.

• 湿地是位于陆生生态系统和水生生态系统之间的过渡性地带，在土壤浸泡在水中的特定环境下，生长着很多湿地的特征植物。