摘要
对破罡湖通江前后相隔一年的湖滨带夏季水生植物种类组成及生物量进行的测量及对比研究表明:(1)通江一年并未造成该湖水生植物物种组成变化,该湖仍然延续了以往11属12种的种群格局,且挺水植物群落几乎不受影响;(2)通江引起了沉水植物群落优势种的变化,马来眼子菜、穗花狐尾藻和菹草出现较大幅度的衰退,玻璃藻赢得了竞争优势;(3)江湖对流打散了浮萍+紫萍群落,金鱼藻生物量得以增加;(4)通江一年后,该湖平均生物量更为接近同类湖泊最佳保有生物量。
The species composition and the biomass of summer hydrophyte of the lakeside in Pogang lake before and after its river-communicating （RC） were investigated. The results showed that the composition of hydrophyte species remained unchanged for last year, which was previously reported to be 12 species belonging to 11 genera in the lake, and aslo the feathers of emergent assemblage were little affected, keeping almost the same. Contrasted with before RC, the dominant species of submerged assem- blage varied significantly, Potamogeton malaianus , Ceratophyllum demersum and Potamogeton crispus declined and Najas marina bloomed in summer of 2007. The circulation of water contributed tremendously to disappearance of ASS, Lemna minor ＋ Spirode- la polyrrhiza and increasing of biomass of Ceratophyllum demersum after RC. One year later in RC, the average biomass of Pogang lake increased more closely to the optimal biomass of the same type of the lakes.
出处
《生物学杂志》
CAS
CSCD
2009年第3期10-12,共3页
Journal of Biology
基金
国家重点基础研究发展规划项目(2002CB412307)
国家“十五”重大科技专项(2002AA601013)
安徽省教育厅自然科学基金(KJ2007B260)
关键词
通江
水生植物
对比研究
破罡湖
fiver-communicating （RC）
hydrophyte
contrast research
Pogang lake
