Among the different types of wetlands, reed swamps, mudflats and tidal furrows shrank significantly in acreage with natural index falling down to 69.94%, 71.49% and 78.42%, respectively in 2005.

• 在不同自然湿地景观类型中，芦苇沼泽、滩涂和潮沟面积萎缩幅度较大，2005年其自然度分别为69.；94%25、71