1[2]Brij G. Wetland types[A]. In: Majumdar S K, Miller E W,et al. Ecology of wetlands and associated systems[M]. The Pennsylvania Academy of Science, 1998.
2[3]Kent, Donald M. Defining wetlands[A]. In: Kent, Donald M,et al. Applie d wetlands science and technology[M]. Lewis Publishers, 1996.
3[4]Klemov, Kenneth M. Wetland mapping[A]. In: Majumdar S K, Miller E W, e t al. Ecology of wetlands and associated systems[M]. The Pennsylvania Academy of Science, 1998.
4[5]Poianai, Karen A,Barbara L.GIS-Based nonpoint source pollution modeling: Considerations for wetlands[J].J.of Soil and Water Cons., 1995,613-619.
5[6]Skaggs R W, Amatya D,et al. Characterization and evaluation of proposed h ydrologic criteria for wetlands[J]. J. Soil and Water Cons., 1994,49(5):50 1-510.