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According to preliminary statistics, there are 9.4×106ha of mire, 8.0×106ha of lake, 2.1×106ha of salt marsh, 2.7×107ha of shallow sea (0–5m), and 3.8×107ha of paddyfield, their total area amounts to 8.45×107ha. Wetland consists of natural wetland system and man-made wetland system. According to hydrology, landform, soil and vegetation etc., natural wetland can be divided into the following types:...
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