CAJ | 학술논문

贡湖湾是无锡和苏州两市的重要水源地，随着近些年太湖水质的急速恶化，贡湖湾蓝藻暴发现象日益严重，危及饮水安全.为提供贡湖湾水资源管理的理论依据，于2012年开展贡湖湾水生植被野外调查.对8个断面进行为期5天的调查，结果表明：(1)共记录贡湖湾水生植物20科27属34种，单子叶植物和沉水植物分别为优势分类群和生态型；(2)贡湖湾水生植被分布区面积占总水域面积的45.35%，为典型半草型湖泊；(3)共有8种水生植物群落分布，其中马来眼子菜群落分布区面积和生物量最大；(4)贡湖湾水生植被总体表现出北部无水生植被分布，东部生物量高、群落及物种组成复杂，其他区域生物量小、群落组成单一的分布格局.水质恶化和插网捕鱼对贡湖湾水生植被分布现状存在影响，过度清淤可能是造成北部水域裸露的原因.结合贡湖湾水生植被分布现状分析结果，建议在贡湖湾水生植被管理中要开展北部裸水区植被修复，促进湾口区域马来眼子菜群落生长，加强对“引江济太”工程上游来水和贡湖湾水质的监测，并注重外来入侵植物尤其是水盾草群落的监测.
공호만시무석화소주량시적중요수원지，수착근사년태호수질적급속악화，공호만람조폭발현상일익엄중，위급음수안전.위제공공호만수자원관리적이론의거，우2012년개전공호만수생식피야외조사.대8개단면진행위기5천적조사，결과표명：(1)공기록공호만수생식물20과27속34충，단자협식물화침수식물분별위우세분류군화생태형；(2)공호만수생식피분포구면적점총수역면적적45.35%，위전형반초형호박；(3)공유8충수생식물군락분포，기중마래안자채군락분포구면적화생물량최대；(4)공호만수생식피총체표현출북부무수생식피분포，동부생물량고、군락급물충조성복잡，기타구역생물량소、군락조성단일적분포격국.수질악화화삽망포어대공호만수생식피분포현상존재영향，과도청어가능시조성북부수역라로적원인.결합공호만수생식피분포현상분석결과，건의재공호만수생식피관리중요개전북부라수구식피수복，촉진만구구역마래안자채군락생장，가강대“인강제태”공정상유래수화공호만수질적감측，병주중외래입침식물우기시수순초군락적감측.
Gonghu Bay is an important drinking water resource area for Wuxi City and Suzhou City. With the rapid deterioration of water quality, cyanobacteria bloom has become progressively worse, which might endanger human healthy through water utilization. In order to provide a theoretical basis for managing water resources of Gonghu Bay, an aquatic vegetation survey was undertaken. Eight transects were set, and boat-based survey was performed. The results indicated:1) There were 34 species, belonging to 27 genus and 20 families, distributed in Gonghu Bay. Monocotyledons and submerged plants were the dominant taxa and ecotypes, re-spectively. 2) Grass-dominated state and algal-dominated state were coexisted in Gonghu Bay, as the results of the percentage of aquatic vegetation distribution area to total area was 45. 35%, while the percentage of bare water area to total area was 54. 65%. 3) The aquatic vegetation in Gonghu Bay could be divided into 8 community types, and the Potamogeton malaianus community was the biggest in terms of distribution area and biomass. 4) Overall, the distribution pattern of aquatic vegetation in Gonghu Bay illustrated that north area was associated with bare water, east area was dominated by macrophytes, and other areas were taken by macrophytes with low coverage and biomass. The distributions of aquatic macrophytes in Gonghu Bay might have responded to the deterioration of water quality and fishing practice by trap nets. Furthermore, we also speculated that over-excavated dredging wasthe reason that aquatic macrophytes disappeared in north area. The current research suggested that, in order to improve the vegeta-tion growth, aquatic vegetation restoration projects should be carried out in the north and the bay mouth of Gonghu Bay. Mean-while, water quality monitoring of Yangtze River-Lake Taihu water transfer project should be further strengthened. What’s more, invasive plants, especially Cabomba caroliniana, should be effectively monitored.