2003-2018年厦门市不透水面时空变化及影响因素分析

In this study, the linear spectral mixed decomposition model is used to extract the impervious surface of Xiamen in 2003, 2010 and 2018, study its temporal and spatial evolution, and analyze the influencing factors of the change of urban impervious surface. The results show that the impervious surface of Xiamen has expanded significantly in recent years, with an average annual growth rate of 7.83%, from 249.33 square kilometers in 2003 to 542.13 square kilometers in 2018; In 2018, 78.75% of the newly added impervious surface was converted from the original vegetation and 18.80% from the water body; The urban impervious surface of each administrative region of Xiamen expands outward on the original basis, mainly from coastal areas to inland areas; Relevant policies, population and economy have an impact on the expansion of impervious surface; Over the past 15 years, the spatial pattern of impervious surface in Xiamen has changed significantly. After urban development, the low-density impervious surface is scattered and fragmented, and its position in the impervious surface landscape has declined. The high-density impervious surface is characterized by complexity, aggregation, connectivity and higher proportion in the landscape.