CAJ | 학술논문

对北太湖上游流域的苏南第二大潮泊滆湖及其入太湖的主要河流(太涌运河与漕桥河)的水质和水生植被开展调查、评价与环境生态学研究.调查结果表明所有样点水质均超富营养化,尤以太涌运河与漕桥河的水体污染为甚.通过PCA综合评价,河流绝大多数河段已是Ⅳ类水体,滆湖也已呈Ⅲ类水体.对水生植物类群调查而言,调查发现太隔运河和漕桥河中上游河段水生植物多样性指数均很小,凤眼莲、芦苇和菰为优势种,沉水植被分布很少,群落退化严重,耐污种篦齿眼子菜和水盾草占优势;在湖泊中心区,沉水植物已完全退化.聚类分析发现所调查的植物可分为3大类群.PCO和CCA分别表明河流与湖泊所在的样点间的水体理化性状出现很明显的分离;该流域水体中不同形态N、P含量或底泥N、P含量主要影响水生植物种类组成和分布.
대북태호상유류역적소남제이대조박격호급기입태호적주요하류(태용운하여조교하)적수질화수생식피개전조사、평개여배경생태학연구.조사결과표명소유양점수질균초부영양화,우이태용운하여조교하적수체오염위심.통과PCA종합평개,하류절대다수하단이시Ⅳ류수체,격호야이정Ⅲ류수체.대수생식물류군조사이언,조사발현태격운하화조교하중상유하단수생식물다양성지수균흔소,봉안련、호위화고위우세충,침수식피분포흔소,군락퇴화엄중,내오충비치안자채화수순초점우세;재호박중심구,침수식물이완전퇴화.취류분석발현소조사적식물가분위3대류군.PCO화CCA분별표명하류여호박소재적양점간적수체이화성상출현흔명현적분리;해류역수체중불동형태N、P함량혹저니N、P함량주요영향수생식물충류조성화분포.
A comprehensive survey is undertaken in the upper reaches of the Tathu Lake watershed, including Gehu Lake, Taige Canal and the Caoqiao River. Results of the analysis of water samples from 12 sampling sites show all of these waters are high in nutrient content, being hyper-eutrophicated. It is found through PCA integrated assessment that water quality in most of the rivers' sections is on the level of Class IV, the Lake level of Class Ill. Aquatic ecological investigation in terms of aquatic plants indicate that diversity of aquatic plants are very low, represented by water hyacinth and common duckweed, the dominant species widespread over the rivers and canal; the submersed macrophytes, as a whole, have showed serious tendency of decline, and their distribution areas are on decrease. Cluster analysis method of UPGMA is used to categorize the aquatic macrophytes which have been investigated, and through PCO and CCA analysis, there was a distinct separation between rivers and lake in terms of physio-chemical factors of the waters. It is concluded that the aquatic environmental factors such as N and P in their various forms, beth in water and in the sediment, have exerted influences on the plants in terms of composition and distribution.