Time-space Distribution Pattern of Wintering Shorebirds in Leizhou Peninsula Mangrove Wetland
LIU Yiming,XU Fanghong,LIN Guangxuan, ZHANG Wei,MENG Xiangli,YU Nana,LIU Jun
2015,(5):
117-125.
doi:10.13466/j.cnki.lyzygl.2015.05.020
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We conducted the study of the time-space distribution pattern of shorebirds in winters from 2010 to 2014.Line transect method and sample point method were applied as the investigation methods for the investigation of the species,quantity,distribution habitat and region of shorebirds and the calculation of indexes including species diversity,evenness,density,dominance and similarity.Totally,32 species of shorebirds were recorded,including:19 species of China-Japan migrant birds,18 species of China-Australia migrant birds and 3 species that are listed in CITES Appendix II;27 species of winter birds,5 species of passing migrant birds,31 species of Palearctic Realm and 1 species of wide-distributed pattern.The results showed that 2013 was the year with highest species number,individual number,diversity index and density;tidal flat habitat was the habitat with highest species number,diversity,evenness and dominance index;culture pond habitat had the greatest density;Jiulong Mountain has the most abundant species number;Fucheng city had the highest species number,diversity and density,and Gaoqiao had the highest evenness.According to the analysis of results,we concluded that Mangrove Wetland in Leizhou Peninsula belongs to one of the important wintering ground which was in accordance with international important wetland standards for shorebirds.The community characteristics of wintering shorebirds in Mangrove Wetland of Leizhou Peninsula had no significant difference in the period from 2010 to 2014,but the number of individuals had some fluctuations.Wintering shorebirds were mainly distributed in tidal flat habitat and culture pond habitat.Tidal flat habitat can accommodate larger community,so shorebirds prefer to seek for food in tidal flat habitat.But in winter,culture pond habitat is also a nice place for food supplement.The Mangrove Wetland in Leizhou Peninsula should be protected as a whole.