Spatial and temporal dynamic analysis of wetland in Pearl River Estuary during 1988-2004

Kai Liu; Bin Ai; Shugong Wang; Wanxia Liu

doi:10.1117/12.813121

10 November 2008 Spatial and temporal dynamic analysis of wetland in Pearl River Estuary during 1988-2004

Kai Liu, Bin Ai, Shugong Wang, Wanxia Liu

Proceedings Volume 7146, Geoinformatics 2008 and Joint Conference on GIS and Built Environment: Advanced Spatial Data Models and Analyses; 71460U (2008) https://doi.org/10.1117/12.813121
Event: Geoinformatics 2008 and Joint Conference on GIS and Built Environment: Geo-Simulation and Virtual GIS Environments, 2008, Guangzhou, China

Abstract

Rapid land use change has taken place in many coastal regions of China such as the Pearl River Estuary over the past tow decades due to accelerated industrialization and urbanization. In this paper, four temporal Landsat TM images were used at a spatial resolution of 30m to mapping wetlands and monitoring their changes in the Pearl River Estuary for the time period of 1988-2004. Hierarchical classification method based on spectral data, prior knowledge about the study area and GIS ancillary data were used to acquire four temporal wetland distribution maps, and three evaluation indicators (change ratio, change speed, and bidirectional dynamic degree model) were used to analysis the change characteristic of wetlands in the study area. The result indicated that there has been a rapid decrease of wetlands in the study area during 1988-2004. The total area of wetlands has lost about 122.66 km2 in the Pearl River Estuary.

Citation Download Citation

Kai Liu, Bin Ai, Shugong Wang, and Wanxia Liu "Spatial and temporal dynamic analysis of wetland in Pearl River Estuary during 1988-2004", Proc. SPIE 7146, Geoinformatics 2008 and Joint Conference on GIS and Built Environment: Advanced Spatial Data Models and Analyses, 71460U (10 November 2008); https://doi.org/10.1117/12.813121

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