Three-Gorge Dam influences wetland macrophytes in middle and lower reaches of Yangtze  

作　　者：Wang Lingling Zeng Guangming Li Zhongwu Su Xiaokang Li Jianbing Huang Guohe 

机构地区：[1]College of Environmental Science ＆ Engineering, Hunan University, Changsha 410082, China [2]Environmental Engineering Program, University of Northern British Columbia, Prince George, British Columbia V2N 4Z9, Canada

出　　处：《Progress in Natural Science:Materials International》2007年第9期1035-1041,共7页自然科学进展·国际材料（英文版）

基　　金：Supported by National Natural Science Foundation of Chinafor Distinguished Young Scholars(Grant Nos.50225926and50425927);the Teach-ing and Research Award for Outstanding Young Teachersin Higher Education Institutions of MOE;the Doctoral Foundation of Ministry of Educa-tion of China(Grant No.200205320170)

摘　　要：Dongting Lake,located in the middle and lower reaches of Yangtze,is regarded as a lake during the water swelling period and a continent in the ebbing period.The construction of the Three-Gorge Dam has influenced the water level of Dongting Lake and the growth of wetland macrophytes in the area.In this study,the growth of main species of wetland macrophytes,such as Carex and Phragmites at Dongting Lake,was observed,and the hydraulic gradient,one of the main factors dominating the abundance and distribution of wetland macrophytes,was also studied at six stations in Dongting Lake area and the effect of the Three-Gorge Dam construction on the growth of wetland macrophytes was observed.Dongting Lake, located in the middle and lower reaches of Yangtze, is regarded as a lake during the water swelling period and a continent in the ebbing period. The construction of the Three-Gorge Dam has influenced the water level of Dongting Lake and the growth of wetland macrophytes in the area. In this study, the growth of main species of wetland macrophytes, such as Carex and Phragmites at Dongting Lake, was observed, and the hydraulic gradient, one of the main factors dominating the abundance and distribution of wetland macrophytes, was also studied at six stations in Dongting Lake area and the effect of the Three-Gorge Dam construction on the growth of wetland macrophytes was observed.

关 键 词：Three-Gorge Dam Dongting Lake wetland macrophytes hydraulic gradient 

分 类 号：Q94[生物学—植物学]