CAJ | 학술논문

调查了太湖东部湖湾(贡湖湾、光福湾、渔洋湾)秋季沉水与浮叶植物的种类组成、覆盖度及水体理化性质,分析了大型水生植物的生长与分布对湖水总氮、总磷、透明度与叶绿素(Chl-a)等水质因子的影响.结果表明,太湖东部不同湖湾大型水生植物的分布状况具有明显差异,其分布频度在4.8%~95.2%,并以马来眼子菜分布频度最高.大型水生植物的生长对水体营养盐含量、理化因子等具有较为明显的影响,水生植物生长区湖水不同形态营养盐含量均低于无水生植物生长区,其总氮与总磷平均含量分别低约39%与51%.此外,蓝藻水华首先会在有水生植物生长的区域堆积,且沉水植物生长优势区蓝藻水华堆积程度要高于浮叶植物生长优势区,表现为该区域 Chl-a 平均浓度最高,达11.15μg/L,而浮叶植物区Chl-a平均浓度为9.98μg/L,无水生植物区的水华堆积程度最低,其Chl-a平均浓度为7.19μg/L.因此,针对不同水生植物生长区,其水体富营养化治理策略亦不同.
조사료태호동부호만(공호만、광복만、어양만)추계침수여부협식물적충류조성、복개도급수체이화성질,분석료대형수생식물적생장여분포대호수총담、총린、투명도여협록소(Chl-a)등수질인자적영향.결과표명,태호동부불동호만대형수생식물적분포상황구유명현차이,기분포빈도재4.8%~95.2%,병이마래안자채분포빈도최고.대형수생식물적생장대수체영양염함량、이화인자등구유교위명현적영향,수생식물생장구호수불동형태영양염함량균저우무수생식물생장구,기총담여총린평균함량분별저약39%여51%.차외,람조수화수선회재유수생식물생장적구역퇴적,차침수식물생장우세구람조수화퇴적정도요고우부협식물생장우세구,표현위해구역 Chl-a 평균농도최고,체11.15μg/L,이부협식물구Chl-a평균농도위9.98μg/L,무수생식물구적수화퇴적정도최저,기Chl-a평균농도위7.19μg/L.인차,침대불동수생식물생장구,기수체부영양화치리책략역불동.
Effects of macrophyte growth and water quality distribution factors such as total nitrogen (TN), total phosphorus (TP), transparency and chlorophyll a were studied in an investigation on specie compositions, coverage of macrophyte and physicochemical properties of water body in eastern bays of Lake Taihu (Gonghu Bay, Guangfu Bay and Yuang Bay). The results showed that Potamogeton wrightii Morong was the most popular specie amony three bays. The coverage of macropyhte was spatially different among survey sites, with the coverage ranged from 4.8% to 95.2%. Nutrients in the macrophyte-coverage area were significantly lower than those in the non-macrophyte area with a decrease of TN and TP concentration of 39% and 51%, However, being locates at the border of Microcystis bloom region, the macrophytes also easy to catch the floating bloom, in which the submerged macrophytes showed higher ability to catch the bloom than floating macrophytes did. Therefore, different aquatic vegetation zones of Lake Taihu need the corresponding strategies to restore water quality.