首页 | 本学科首页   官方微博 | 高级检索  
     检索      

太湖水体生态环境历史演变
引用本文:范成新.太湖水体生态环境历史演变[J].湖泊科学,1996,8(4):297-304.
作者姓名:范成新
作者单位:中国科学院南京地理与湖泊研究所 南京
摘    要:根据1950 ̄1995年期间对太湖水体进行的各次综合性研究结果分析:太湖水质和营养程度大致每10 ̄15年上升一个级别,近期变化尤为明显CODMn含量35年来增加了136%,总磷近年来以9.9%速度上升,浮游藻类80年代以来一直以蓝藻和硅藻占优势,但种群数趋于减少,细胞数据增,局部水域蓝藻水华频发;浮游动物和底栖动物中耐污染类增多,枝角类、桡足类和环节动物、节肢动物数量则降低;鱼类种群数减少,银鱼捕

关 键 词:太湖  富营养化  水生生物  水体  污染  生态环境
收稿时间:1996/4/19 0:00:00
修稿时间:5/8/1996 12:00:00 AM

Historical evolution of water ecological setting in Taihu Lake
Fan Chengxin.Historical evolution of water ecological setting in Taihu Lake[J].Journal of Lake Science,1996,8(4):297-304.
Authors:Fan Chengxin
Institution:Nanjing Institute of Geography & Limnology, Chinese Academy of Sciences, Nanjing 210008
Abstract:Based on the analysis of all comprehensive research in Taihu Lake during 1950- 1995. the evolution about aquatic ecological setting was studied by means of evaluation and comparison for water quality and aquatic creature. The main pollutants (nitrogen, phosphorus and CODMn) of Taihu Lake have been raising since 1960. especially since 1980. CODMn content has increased by 136% for thirty-five years and total phosphorns went up at the speed of 9. 9% in the recent years. The water quality and trophic level reached one grade in 10-15 years. Since the 1980s the dominant algae have been blue-green alga and diatom; however, the species amount of phytoplanton gradually decreased. The algal cell number rose rapidly and the blue-green algal bloom occured frequently. The cladoceran, copepod and annelid, arthropod de-creasingly came to appear in the zooplankton and zoobethos. whose pollntion-resistant species nevertheless increased. And pollution-resistant species of zooplankton and zoobenthos increased , and the genera of fish reduced. of which the ice fish catch greatly dropped in recent years. The degeneration appeared seriously in the aquatic macrophyte. which had withered or was contracting in Wuli Bay and Zhushan Bay. The ecological setting change over 40 years in Taihu Lake was mainly related to human activity, such as discharging polluted water, pen culture in lake, excessively catching aquatic products and so on.
Keywords:Taihu Lake  evolution  water quality and eutrophication  aquatic creature
本文献已被 CNKI 维普 等数据库收录!
点击此处可从《湖泊科学》浏览原始摘要信息
点击此处可从《湖泊科学》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号