The Hydrological Regimes Brought by the Three Gorges Project Affected Riparian Vegetation Distribution and Diversity in 2009 and 2010

2016 International Conference on Environmental Engineering and Sustainable Development

生态环境科学;经济学

Miao, Ling-Feng^1 ; Liu, Wei-Wei^2 ; Yang, Fan^1

College of Environment and Plant Protection, Hainan University, Hainan Province, Haikou

570228, China^1

Lijiang Forest Ecosystem Research Station, Kunming Institute of Botany, Chinese Academy of Sciences, Lijiang, Yunan

674100, China^2

关键词: Diversity analysis;    Hydrological regime;    Plant communities;    Riparian vegetation;    Three Gorges project;    Three gorges reservoir;    Vascular plant species;    Water-level-fluctuation zones;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/51/1/012027/pdf
DOI  :  10.1088/1742-6596/51/1/012027

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Post-dam riparian vegetations affected by the new hydrological regimes in the Three Gorges Reservoir (TGR) were investigated in 2009 and 2010, respectively. The investigation in 2009 showed that about 231 vascular plant species belonging to 169 genera of 61 families were distributed in the water-level-fluctuation zone (WLFZ) of the (TGR). Three vegetation types, including Chuanjiang, Gorge, and other vegetation types, were classified efficiently via cluster analysis. Alpha diversity analysis indicated that species richness gradually decreased with decreasing elevation. Beta diversity analysis indicated that high environment heterogeneity was existed between the lower section and the other two sections, and environment homogeneity was also existed between middle section and upper section. Using the analysis of the field growth in the 2009 and 2010 field surveys as bases, we proposed a list of perennial herb species and woody species that may potentially occurred in the WLFZ of the TGR. In addition, we predicted plant community structural changes in the different altitude sections of WLFZ in the future.