Influence analysis of artificial ecological water transport on the spatiotemporal variations in vegetation in Qingtu Lake

4th International Conference on Water Resource and Environment

地球科学;生态环境科学

Chunyu, X.Z.^1,2,3 ; Huang, F.^1,2,3 ; Zhang, X.^2 ; Ren, G.R.^2 ; Guo, L.D.^3 ; Xia, Z.Q.^1,2,3

State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing

210098, China^1

College of Hydrology and Water Resources, Hohai University, Nanjing

210098, China^2

International Research Center of Hohai University, Nanjing

211100, China^3

关键词: Aquatic vegetation;    Ecological environments;    Influence analysis;    Phragmites australis;    Spatio-temporal variation;    Vegetation community;    Vegetation coverage;    Vegetation restoration;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/191/1/012095/pdf
DOI  :  10.1088/1755-1315/191/1/012095

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

As an ecological barrier between the Badain Jaran Desert and Tengger Desert, Qingtu Lake plays an important role in maintaining the local ecological environment. Since 2010, annual artificial water transport to Qingtu Lake has caused changes in local vegetation communities, which is of great ecological significance for promoting regional vegetation restoration. In this study, Landsat satellite remote sensing images from 2010 to 2017 were used to compare the water surface area, vegetation coverage, and spatial patterns of Phragmites australis communities before and after ecological water transport. The results showed that the water surface area increased rapidly until 2016, and the growth rate of the last two years decreased. There was a slight increase in total regional vegetation coverage, which mainly occurred in the water area due to the substantial growth in P. australis. Therefore, artificial ecological water transport promoted the growth in vegetation around the lake, especially the aquatic vegetation, such as P. australis. However, the original desert vegetation in the study area may have been reduced due to submergence.