Changes of Submerged Macrohhyte Community Structure and Water Quality in the Process of Ecosystem Restoration of a Shallow Eutrophic Lake
LIU Yu-chao1,2, Yu Jin-lei1, Chen Liang1, LIU Zheng-wen1,3
1. Institute of Hydrobiology, Jinan University, Guangzhou 510632, P. R. China; 2. Department of Life Science, Zaozhuang University, Zaozhuang 277160, P. R. China; 3. Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, P. R. China
Submerged macrophyte coverage, percentage of Vallisneria natans and Hydrilla verticillata, and concentrations of total nitrogen (TN)、total phosphorus (TP) and Chl a, were studied in a shallow eutrophic lake. The results showed that: 1) Percentage of Vallisneria natans increased from 30% to 95%, while Hydrilla verticillata decreased from 60% to 5% before May, respectively ; 2) Content of nutrients and chl a reduced quickly with the stabilization of ecosystem after rapid increasing period in the process of transition, concentrations of TN、TP and Chl a reduced to about 0.840 mg·L-1、0.028 mg·L and 2.562μg·L-1, respectively, Secchi depth (SD) increased to 120cm, water quality improved obviously; 3) Our results indicated that ecosystem of Nan Lake was at a clear water state dominated by Vallisneria natans which shifted from turbid state dominated by phytoplankton, after a short interim state dominated by Hydrilla verticillata, gradually.
刘玉超1,2, 于谨磊1, 陈亮1, 刘正文1,3*. 浅水富营养化湖泊生态修复过程中大型沉水植物群落结构变化以及对水质影响[J]. , 2008, 27(5): 376-377.
LIU Yu-chao1,2, Yu Jin-lei1, Chen Liang1, LIU Zheng-wen1,3. Changes of Submerged Macrohhyte Community Structure and Water Quality in the Process of Ecosystem Restoration of a Shallow Eutrophic Lake. , 2008, 27(5): 376-377.
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