Monitoring and analysis of wetland change dynamics in the Yellow River Delta using multi-temporal remote sensing

doi:10.13474/j.cnki.11-2246.2021.0105

Abstract

Abstract: The information of land use change in the Yellow River Delta wetland area can provide reference for relevant departments to formulate wetland protection and economic development. In 2005, 2009 and 2019, Landsat 7 ETM + remote sensing images around the estuary of the Yellow River Delta and along the Yellow River within the territory of Dongying were selected as the data sources to study the land use types by using the supervised classification method, and to distinguish the land use transfer situation of the Yellow River Delta by analyzing the change of coding, and to carry out the dynamic analysis of wetland change. The results show that the total area of wetlands in the study area decreased by 437 km² from 2005 to 2009, showing a decreasing trend. The total area of wetlands in the study area changed from 930 km² in 2009 to 998 km² in 2019, showing a stable and increasing trend in the past ten years. It was found that the coastline of abandoned delta decreased, and the location of the Yellow River estuary changed. In the study area, the land use changed frequently in the past of 14 years, and a dynamic conversion system was formed between wetland land use types and non-wetland land use types.

Key words: Yellow River Delta, wetland conservation, Landsat 7, multi-temporal, dynamic monitoring

CLC Number:

P237

GAO Rui, WANG Zhiyong, ZHOU Xiaodong, LIU Rui. Monitoring and analysis of wetland change dynamics in the Yellow River Delta using multi-temporal remote sensing[J]. Bulletin of Surveying and Mapping, 2021, 0(4): 22-27.

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