Wetlands in China

(整期优先)网络出版时间:2005-04-14
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Wetlandsareshallowmarinewatersandwetareasincludingrivers,lakesandmarshes.Accordingtoscientists,evenreservoirsandpaddyfieldsfallintothecategory.Wetlandsareclassifiedintoover40typesbutaccountsforonly6%oftheearth'stotallandarea.Humanbeingsinhabitbywaterandgrassbecausewetlandsprovideuswithwaterandwetsoil.