【摘要】 2010～2011年,在吉林向海国家级自然保护区采用固定半径样点法对春秋两季的鸟类多样性进行了调查,共记录到鸟类114种22 111只次,隶属于14目34科。应用逐步向后回归模型探测春、秋两季不同景观类型与鸟类香农-维纳指数、均匀性指数和物种丰富度指数之间的关系。结果表明,湿地鸟类群落在季节间发生种类结构的显著变化,不同景观类型对不同多样性指数的影响不同,农田会显著减少湿地鸟类多样性,水域和沼泽对香农-维纳多样性有正效应,但是对均匀性和物种丰富度有负效应,距公路较近会减少鸟类春季的均匀性和香农-维纳多样性。更多还原

【Abstract】 We used point counts to survey bird diversity during spring and autumn in Xianghai wetland reserve,Jilin Province, in 2010 and 2011.We recorded 22 111 birds of 114 species,14 orders,and 34 families.We used the Backward Stepwise Regression Model to analyze seasonal changes on different landscapes in bird community indices including the Shannon-Weiner index,evenness,and species richness.The species composition of the wetland bird community changed significantly by season.Landscape type affected various diversity indices.Farmland had lower waterbird diversity.Open water and marsh had higher Shannon - Weiner diversity,but lower evenness and richness.Distance to roads was negatively related to evenness and Shannon - Weiner diversity in spring.更多还原