湖泊科学2011，Vol.23Issue(3)：383-388,6.
滆湖底质特性对菹草(Potamogeton crispus)和伊乐藻(Elodeanattalii)生长的影响
Effects of substrate character of Lake Gehu on the growth of Potamogeton crispus and Elodea nattalii
摘要
Abstract
Using mesocom experiment, this paper studied the effects of three different sediments ( surface mud, hard mud and surface mud of bank sediment) of Lake Gehu on the growth of two submerged macrophytes, Potamogeton crispus and Elodea nattalii.When grown on surface mud, hard mud and surface mud of bank sediment, the mean biomass of P. crispus and E. nattalii were 4.07,1.98,3.69 kg/m2and 1.86,1.27,1.74 kg/m2, respectively. All the tested species grown on hard mud had the lowest biomass and shoot height. The wet and dry ratio of P. crispus and E. nattalii was affected significantly by the sediments followed with an order of hard mud ＞ surface mud ＞ surface mud of bank sediment. The contents of chlorophyll-a and chlorophyll-b on the surface mud with bank sediment and surface mud were both higher than those cultured on the hard mud. The difference of leaf colour of E.nattalii between the three sediments was remarkable. The measurement of malondialdehyde further suggested that hard mud was not good for the growth of the two submerged macrophytes. Finally the results showed that the two submerged macrophytes were able to gow normally under conditions of different sediments from Lake Gehu. P. crispus grew well on surfurce mud while E. nattalii was more adapted to surface mud of bank sediment. Sediment rehabilitation should be made in order to facilitate the growth of submerged macrophytes of Lake Gehu and give a guide on sediment rehabilitation and the submerged macrophytes restoration of Lake Gehu.关键词
滆湖/沉积物/沉水植物/基质修复Key words
Lake Gehu/ sediment/ submerged macrophytes/ sediment rehabilitation引用本文复制引用
陶花,潘继征,沈耀良,李文朝,黄峰..滆湖底质特性对菹草(Potamogeton crispus)和伊乐藻(Elodeanattalii)生长的影响[J].湖泊科学,2011,23(3):383-388,6.基金项目
国家重点基础研究发展计划项目(2008CB418005)、国家水体污染控制与治理科技重大专项项目(2008ZX07101-007-05)和江苏省科技厅社会发展项目(BE2009697)联合资助. （2008CB418005）
