淮北采煤塌陷湖大型底栖动物群落结构季节动态研究

摘要

2013年9月、12月和2014年3月、6月对淮北采煤塌陷区刘桥湖和临涣湖的大型底栖动物群落结构进行了采样调查，共采集到底栖动物32种，隶属于3门6纲。统计数据表明，刘桥湖和临涣湖底栖动物年平均密度分别为210.95和181.65 ind／m2，年平均生物量分别为60.55和40.17 g／m2。两湖Shannon-Wiener多样性指数（ H′）和Margalef 多样性指数（ D）季节变化趋势较为一致，12月均为最低，而6、9月相对较高，其中，Margalef指数季节性变化更为明显（F （3，16）＞3.95，P ＜0.05）。在空间尺度上，SIMPER与One-Way ANOSIM分析结果表明在刘桥湖与临涣湖之间，底栖动物群落结构不同季节间优势种类的组成存在差异。%Seasonal variations in community structure of macrozoobenthos were investigated in collapsed lakes of Huaibei mining areas Liuqiao Lake and Linhuan Lake in September (autumn) and December (winter) of 2013, and in March (spring) and June (summer) of 2014 .A total of 32 species belonging to 6 classes and 3 phylum were collected .The average densities were 210.956 ind/m2 in Li-uqiao Lake and 181.65 ind/m2 in Linhuan Lake .The average biomass of macrozoobenthos were 60.55 g/m2 in Liuqiao Lake and 40.17 g/m2 in Linhuan Lake, respectively.The seasonal changes of Shannon -Weiner index (H′) and Margalef index (D) were same.The two indexes were all lowest in December , and higher in June and September .The seasonal change of Margalef index was more obvious (F(3, 16) >3.95, P<0.05).The analyses of SIMPER and One-Way ANOSIM indicated that community structure of dominant species of macrozoobenthos was obviously different between Liuqiao Lake and Linhuan Lake .