环境因子对东湖几种沉水植物生理的影响研究

报道了光照强度、水体温度及水体ｐＨ值对东湖５种沉水植物生理的影响．实验结果表明，在一定温度范围内，５种植物的光补偿点均随温度的升高而上升，且种间有较大的差异．各植物光合色素的含量，受生态因子的影响，表现出一定的适应性．５种植物对水体高ｐＨ值耐受能力有明显的差异．探讨了富营养化湖泊沉水植物消亡的原因及生态分布的规律，提出了富营养化湖泊水生植被的恢复及水生生态系统重建中的植物选种原则．

THE STUDY ON THE INFLUENCE OF ENVIRONMENTAL FACTORS OF THE SUMBERGED MACROPHYTES IN THE EAST LAKE

This paper reported the influence of light intensity, water temperature, PHvalue on the five Submersed aquatic macrophytes in the East Lake. The light compensationpoints (L. C. p)of five plants all increased with the raising of the temperature. There were obviously difference between different ecological distribution. The photosynethctic pigment contemt showed some degree adqptibility. The endurancing ability of them to the high PH valuewere different.It proded into the disappearance and ecological distribution of the submersed macrophytein the eutrophicate lake. It also inquried into the principle of selecting specie and making thebest use of nature plant resources in the course of the work to recovery and rebuild aquatic ecological system.