w wetlands for contaminated sites protected amphibians

The present invention discloses a W-type one contaminant wetland sites amphibian for protection. The bottom and sides of the present invention is constructed of the wall concrete. The use of clean soil matrix, fills a W-shaped, the entire wetland is divided into three partitions: are land areas, shallow water and deep water. Wetland plants reed and cattail-based, may cooperate to other aquatic plants. Water use local groundwater. The present invention is the use of just add water periodically to ensure shallow water depth can be between 2-10cm, wetland plants harvested 1-2 times a year. The present invention is of simple structure, easily available materials, low cost to build, it can play an important role in protecting amphibians.