南京江心洲鸟类群落特征

Avian Community Characteristics at Alluvionin Nanjing Section of Yangtze River

2004～2006年,分冬夏两季对南京江心洲4种典型生境(居民区、农田区、林区及湿地区)的鸟类资源进行了调查。共记录鸟类67种,隶属10目25科。对冬夏两季不同生境中鸟类群落的密度、现存生物量、多样性指数、均匀度、优势度的对比研究表明,冬季鸟类密度、物种多样性和均匀度均高于夏季,而优势度、现存生物量则夏季高于冬季。在不同生境中,林区鸟类密度、多样性指数最高;居民区优势度最高;均匀度指数冬季林区最高,夏季居民区最高。

During 2004 and 2006, avian communities at four habitat types, village, farmland, woodlot, and wetland, were studied in summer and winter. A total of 67 species belonging to 10 orders, 25 families were recorded. Analysis on avian community characteristics was made based on the index of density （ D ）, biomass （ Es ）, Shannon-wiener index （ H＇ ）, species evenness （J） and superiority （ C）. The value of index on density, diversity and evenness in the winter were higher than those in the summer, whereas the index of superiority and biomass were lower in the summer than those in the winter. Woodlot had the highest avian density and diversity and village had the highest superiority among the four habitat types. The highest evenness value was recorded in woodlot during winter and in village during summer.