Abstract: Guangdong-Hong Kong-Macao Greater Bay Area is a mega-city cluster with the goal of becoming a world-class city cluster. Multiple periods of remote sensing data and the landscape pattern index are used to find the development law of the Greater Bay Area from 2000 to 2020 in this paper. The results show that: ①The main land cover types in the Greater Bay Area are forest land, arable land, and residential and construction land. The total proportion of the three types of land is more than 80% for many years. ②The residential and construction land in the Greater Bay Area is increased by 115.21% in 20 years with the area growing to 9 183.47 km², which is the land type with the largest area growth and the fastest rate of change in the Greater Bay Area. ③The fragmentation and patch density of the landscape pattern in the Greater Bay Area is decreasing continuously. The degree of landscape aggregation and landscape abundance is increasing. The distribution of regional landscape patterns is becoming increasingly rational.

Key words: Guangdong-Hong Kong-Macao Greater Bay Area, 3S technology, land cover, landscape pattern, spatio-temporal changes