Coastal cities are rich in natural resources and geographical advantages. The ecological quality of coastal areas is one of the important factors affecting the sustainable development of coastal cities. Dynamic monitoring and quantitative evaluation of ecological environmental quality can provide a scientific basis for ecological environmental protection and sustainable development. This paper took Ningbo Hangzhou Bay New Area as the research object, based on four issues of remote sensing image data in 2013, 2015, 2017, and 2020 and constructed the remote sensing based ecological index model of Ningbo Hangzhou Bay New Area by extracting index information such as greenness, humidity, dryness, and heat. It is concluded that during the study period, the improvement area of eco-environmental quality is larger than the degradation area, indicating that the eco-environmental quality of Hangzhou Bay New area is developing in a good direction from 2013 to 2020.
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