摘要
对太湖沉水和浮叶植物、底栖动物及其湖泊水质和沉积物状况等进行了调查.结果表明:沉水和浮叶植物的存在对太湖水质、沉积物特性和底栖动物的多样性均有一定影响.有草区与无草区比较:其水体透明度提高了1.12(5月)和1.99(9月)倍,TN浓度降低了1.84(5月)和0.70(9月)倍,TP浓度降低了0.99(5月)和1.58(9月)倍,叶绿素含量降低了2.17(5月)和1.54(9月)倍,有草区底栖动物的生物多样性(75种)明显高于无草区(53种),方差分析差异达显著(P<0.05)或极显著(P<0.01).表明沉水和浮叶植物是维持太湖浅水湖泊健康生态系统的重要组成部分,在浅水湖泊中的作用不可替代.
The submersed and floating-leaved macrophytes,macrozoobenthos,water quality,and sediments in the Taihu Lake have bee investigated. The results show that the existence of submersed and floating-leaved macrophytes have a significant effect on water quality,sediments’ characteristics and the index of biodiversity of the macrozoobenthos. Through the comparison of the area with macrophytes and the area without macrophytes,it is found that water transparency improve 1.12 （May） and 1.99 （Sept.） times,TN reduce 1.84 （May） and 0.70 （Sept.） times,TP reduce 0.99 （May） and 1.58 （Sept.） times,the content of chlorophyll reduce 2.17 （May） and 1.54 （Sept.） times; the biodiversity of macrozoobenthos （75 species） in the area with macrophytes is higher than that in the area without macrophytes （53 species）. The Analysis of Variance shows that the difference reached significant level （P〈0.05） or extremely significant level （P〈0.01）. The research reveals that Taihu Lake’s submersed and floating-leaved macrophytes is an important part to maintain the healthy shallow lake ecological system.
出处
《河南师范大学学报（自然科学版）》
CAS
CSCD
北大核心
2010年第2期136-139,共4页
Journal of Henan Normal University(Natural Science Edition)
基金
国家863计划项目(2002AA601011)
广东省自然科学基金(8451022501000016)
关键词
浅水湖泊
沉水和浮叶植物
底栖动物
营养盐
太湖
shallow lake
submersed and floating-leaved macrophytes
macrozoobenthos
nutrients
Taihu Lake
