Dynamic Analysis of Water Area Change in Baiyangdian Wetland based on Landsat Imagery

Lin Dong; Mo Zhao; Zishuo Hu; Zeming Liu; Xiaoyu Pi; Mengqian Li

doi:10.6919/ICJE.202505_11(5).0007

Authors

Lin Dong
Mo Zhao
Zishuo Hu
Zeming Liu
Xiaoyu Pi
Mengqian Li

DOI:

https://doi.org/10.6919/ICJE.202505_11(5).0007

Keywords:

Baiyangdian Wetland; Water Index Method; Accuracy Assessment; Changes in Water Area.

Abstract

Baiyangdian is the largest freshwater wetland ecosystem in the North China Plain. Driven by the South-to-North Water Diversion Project, dredging and dredging, and the Hundred Precipitates Linkage Project, Baiyangdian has implemented scientific ecological water replenishment, and the amount and level of water in the precipitate have gradually increased, and the condition of the water bodies has significantly improved. In order to study the change of Baiyangdian water area in recent years, the study is based on Landsat remote sensing image data, using the water body index method to extract the water body in Baiyangdian region from 2003 to 2023, evaluating the extraction accuracy of each water body index, selecting the most suitable water body index for Baiyangdian region, and analyzing the change of Baiyangdian water area and driving factors during this period. The study shows that NDWI is a water body index method with higher extraction accuracy and is more suitable for Baiyangdian region, and the overall expansion trend of Baiyangdian watershed area from 2003 to 2023. The results of the study can reflect to a certain extent the change of Baiyangdian water area in recent years, and can provide reference for the management of Baiyangdian water bodies.

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