CAJ | 학술논문

水生植被是浅水湖泊生态系统最重要的生态特征之一，了解其群落历史演化特征，对生态退化湖泊的修复有着重要指导意义。研究选择长江中下游地区代表性草型湖泊梁子湖，基于梁子湖沉积岩芯210Pb/137Cs测年、沉积硅藻序列和梁子湖长期水生植被监测记录，探讨利用沉积硅藻记录来重建该湖历史时期水生植被演替特征的可行性。研究结果表明：梁子湖沉积硅藻记录对历史时期水生植被的演替有较好的反映；基于此，对梁子湖过去近200年的水生植被覆盖度进行了重建；与湖泊流域历史环境信息的对比分析表明洪水是影响该湖水生植被发育的一个重要因素。研究结果证实了在浅水湖泊中，沉积硅藻可揭示历史水生植被的信息，并为该湖的水生植被保护提供科学依据，同时对该区富营养湖泊的生态修复有重要的指导价值。
수생식피시천수호박생태계통최중요적생태특정지일，료해기군락역사연화특정，대생태퇴화호박적수복유착중요지도의의。연구선택장강중하유지구대표성초형호박량자호，기우량자호침적암심210Pb/137Cs측년、침적규조서렬화량자호장기수생식피감측기록，탐토이용침적규조기록래중건해호역사시기수생식피연체특정적가행성。연구결과표명：량자호침적규조기록대역사시기수생식피적연체유교호적반영；기우차，대량자호과거근200년적수생식피복개도진행료중건；여호박류역역사배경신식적대비분석표명홍수시영향해호수생식피발육적일개중요인소。연구결과증실료재천수호박중，침적규조가게시역사수생식피적신식，병위해호적수생식피보호제공과학의거，동시대해구부영양호박적생태수복유중요적지도개치。
Aquatic vegetation is one of the most important ecological characteristics of shallow lake ecosystems. Un-derstanding its evolution is crucial for lake ecological restoration. In this study, Liangzi Lake, a representative lake from the Yangtze floodplain, was chosen because of the high abundance of aquatic vegetation. To reconstruct the historical evolution of aquatic vegetation, a sediment core from its deepest area was analyzed with radiometric dating (210Pb/137Cs) and sedimentary diatoms. The reconstructed aquatic vegetation information by sedimentary diatom records reflected the succession of aquatic vegetation in historical period in comparison with the monitoring aquatic vegetation records since 1950s. We also reconstructed the coverage of aquatic vegetation over the past 200 years for Liangzi Lake. Based on the data from reconstructed historical aquatic vegetation information and the historical environmental data from its catch-ment, this study revealed that flood was one of the main factors affecting aquatic vegetation development in Liangzi Lake. This study demonstrated that diatoms can be used for the reconstruction of the amount of historical aquatic vege-tation in such shallow lakes, which can provide the scientific basis for the aquatic vegetation protection and important guidance of the lake for the ecological restoration.