摘要
采用野外调查和实验室分析的方法,对近年来巢湖水华暴发状况和巢湖底栖动物的时空分布进行对比分析,结果显示:西半湖的蓝藻水华暴发频率远大于东半湖,位于南淝河口巢湖西北部位是蓝藻暴发聚集区,向东不断减小。底栖动物呈现东半湖较西半湖多,而蚬类较少,螺类变多,这种分布特征与水华暴发造成生态破坏有关。2014年的巢湖采样调查结果反映出西半湖底栖动物与水华暴发频率分布呈一定的反相关,东半湖由于其水华暴发频率低且与底栖动物分布无明显的相关性。近年来巢湖治理力度加大,水质有所改观,但是底栖动物分布表明水生生态环境未有显著改观,应加大巢湖生态环境治理力度。
Using field survey and laboratory analysis methods,the recent algae outbreak status and macrozoobenthos＇ spatial-temporal distribution in Chaohu Lake were investigated. Results showed that the algal outbreak frequency in the Western-half lake is greater than that in the East-half Lake. The accumulation and high incidence area of blue algal bloom is located in the South Feihe River estuary into Chaohu Lake and the algal bloom frequency decreased from west to east in this area. The amounts of macrozoobentho in the Easternhalf lake is higher than that in the Western-half Lake,and the number of flumineas and the number of bellamya sp. were decreased. It was speculated that the distribution pattern of macrozoobentho in Chaohu Lake was related to the bloom of algal,which led to the damage of the lake eco-environment. The result of a sampling survey conducted in 2014 indicated that a negative correlation existed between the amounts of macrozoobentho in the Western-half lake and the algal bloom frequency. The algal bloom frequency in the Eastern-half lake was low. There was no obvious correlation between this frequency and the benthic fauna distribution. With more and more efforts made to control Chaohu Lake pollution,the water quality of Chaohu Lake has improved in recent years. However,the distribution characteristics of macrozoobentho indicated no obvious improvement in the aquatic environment. Hence a huge of works on the ecological environment regulation of Chaohu Lake should be done in the future.
出处
《生物学杂志》
CAS
CSCD
2016年第2期8-12,17,共6页
Journal of Biology
基金
国家自然科学基金(41172121)
安徽省自然科学基金青年项目(1608085QB45)
关键词
巢湖水华
底栖动物
时空分布
水生生态环境
治理效果
algae in Chaohu Lake
meerozoobenthos
spatial-temparal disfribution
aquatic ecological environment
treaofment effeer
