Understanding and evaluating urban ecological light pollution problems based on Luojia 1-01 nighttime light imagery

Abstract

Pollution of artificial light at night (ALAN) harms the survival of organisms and destroys the ecological environment. However, there is still a lack of research on understanding and evaluating and identifying ecological risk patterns of urban-scale ALAN pollution. This paper used Luojia 1-01 nighttime light imagery to analyse and evaluate the ecological ALAN pollution. The following conclusions were drawn in the end: 1) the city with the most serious ALAN pollution in the Triangle of Southern Fujian is Xiamen, especially the Huli District and Siming District (Xiamen's subordinate counties); 2) the ALAN polluted regions in Xiamen Island and Gulangyu Island occupy approximately 3.4 km2 (23.4 %).