Abstract: The weed in reed fields from six town of Baiyangdian Lake was investigated by the method of random sampling and inverted W-sampling pattern in 2008－2009. 103 weed species from 29 families were found. Ten weed species were dominant in reed fields based on the analysis of their relative abundance. They are Setaria viridis,Glycine soja,Bidens frondosa,Humulus scandens,Actinastenma lobatum,Hemarthria altissima,Phalaris arundiacea,Capsella bursa-pastoris,Viola japonica,Polygonum hydropiper in which the relative abundance is over 10%. The weeds communities in Reed fields of Baiyangdian Lake have following four characteristics: The dominant weed species were variable in different area; Perennial weed for example H. altissima,P. arundiacea,Metaplexis japonica,Cephalanoplos setosum,Imperata cylindrical were aboundent; The liane weed species such as A. lobatum,H. scandens,G. soja,M. japonica,Calystegia hederacea can cause severe damage to reed; New weed species such as P.arundiacea and B. frondosa occur seriously.

Key words: Baiyangdian Lake, Reed fields, Weeds species, Weeds generation, Investigation

CLC Number: 

• S451