中国湿地面积大约61英亩，包括沼泽、红树林、环礁湖、河流三角洲、湖泊以及沿海一些地区，总计为国土面积的2.5%。

China has 61 million acres of wetlands, which include swamps, mangroves, lagoons, river deltas, lakes, and coastal areas that collectively cover about 2.5 percent of the country.

youdao

确定中国沼泽湿地元数据表达形式，建立沼泽湿地空间数据库的元数据库。

Make sure Chinese mire wetland metadata expresses form, create the metadatabase of the mire wetland spatial database.

youdao