The present invention relates to a hybrid artificial wetland for coastal and natural wetland protection. The present invention constructs a pond-type freeflow artificial wetland in the inner region and the coastal proximity of the coastal region, respectively, and combines the horizontal underground flow and the vertical underground artificial wetland to the pond-type freeflow artificial wetland in the coastal vicinity. The pond-type freeflow artificial wetland in the inner region and the horizontal underground flow artificial wetland and the vertical underground flow artificial wetland are connected as waterways so that the waterway-type freeflow artificial wetland is formed around the waterway. It will be possible to create artificial wetlands over a wide area, thus preserving the natural environment and restoring ecosystems, and combining free-flow artificial wetlands, horizontal underground flow wetlands and vertical underground flow wetlands, It can obtain the performance of wastewater treatment by the function and harmonize with the surrounding environmental conditions. It is possible to improve the aesthetic scenery, and by having a free flowing artificial wetland around the waterway, it is possible to create a natural learning area of a large area or to utilize it as a wetland for secondary treatment after urban sewage treatment.
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