... VNUJournalofScience,EarthSciences24(2008)96‐10396TheVietnamese Wetlands Classification System MaiTrongNhuan1,NguyenThiThuHa2,*,TranDangQuy2,NguyenThiNgoc2,DoThiThuyLinh2,NguyenThiMinhNgoc2,Nguyen ThiHongHue2,PhamBaoNgoc21VietnamNationalUniversity,Hanoi2CollegeofScience,VNUReceived1May2008;receivedinrevisedform3July2008Abstract.The ... area with 50 % areal coverage of mangrove trees overthe shrub layer with 60% areal coveragewouldbeclassifiedasamangroveforest(R).If the vegetation covers less ... (1996),NguyenChuHoi(1999),NguyenHuyThang(1999), The Vietnam National Committee ofMekong River (1999), Nguyen Chi Thanh(1999, 2002), Hoang Van Thang (2002), VuTrung Tang (1994‐2004),...