崇明东滩互花米草群落中底栖动物群落动态的初步研究  

ASTUDY ON THE FLUCTUATION OF ZOOBENTHIC COMMUNITY IN CHONGMING DONGTAN'S SPARTINA ALTERNIFLORA LOISEL

作　　者：徐晓军[1] 王华[1] 由文辉[1] 刘宝兴[1] 

机构地区：[1]华东师范大学环境科学系,上海200062

出　　处：《海洋湖沼通报》2006年第2期89-95,共7页Transactions of Oceanology and Limnology

基　　金：上海市农委科技攻关项目;上海市科委重点项目;上海市重点学科;国家211重点学科资助

摘　　要：通过对崇明东滩互花米草(Spartina alternifloraLoisel)群落中底栖动物群落的跟踪调查,研究了底栖动物群落在互花米草群落中的时空动态变化。结果显示:整个互花米草区域一年中共出现底栖动物16种,以软体动物占优势。互花米草群落中心区域的底栖动物群落各项结构指标平均值都比边缘要低,包括物种数、密度、生物量及多样性,说明互花米草密集的地上部分枝干及发达的地下根系严重抑制底栖动物的栖息和生长;随土层垂直变化,各项指标平均值基本上都呈现上层>中层>下层的规律。随季节变化,中心区域底栖动物的种类变化趋势表现为夏=秋>春>冬,最高的夏、秋有6种,最低的冬季为4种;中心区域密度的变化规律是秋>夏>冬>春,最高的秋季为553个/m2,最低的冬季为286个/m2。中心区域底栖动物不同层的各指标所占的比率随季节变化而变化。This paper studies the seasonal and vertical changes of zoobenthic communities in Dongtan＇s Spartina alterniflora Loisel community. The results was follows：①There were 16 species zoobenthic in the Spartina alterniflora Loise area and the mollusk was dominant. ②Several indices of the zoobenthic community in the center of Spartina alterniftora Loisel community were lower than those at the edge, including the number of species, density, biomass and biodiversity, implying that the thick community and root of Spartina alterniflora Loisel restrained the inhabitancy and growth of zoobenthic community. ③The spatial distribution of the indices of zoobenthic community was that top-level〉middle level〉bottom-level in the center of the Spartina alterniflora Losiel community. ④The seasonal distribution of the species of zoobenthic community was that summer= autumn〉spring〉winter, while the density distribution of zoobenthic community was that autumn〉summer〉spring〉winter in the center of Spartina alterniflora Loisel community.

关 键 词：互花米草 底栖动物群落 季节变化 垂直变化 

分 类 号：Q14[生物学—生态学]