Light Pollution Characteristics in Marine-Related Protected Areas in Pearl River Delta
Light pollution is the fourth major type of pollution and poses significant harm to marine ecosystems.This paper analyzes the evolution characteristics and spatial distribution patterns of light pollution in marine-related natural protected areas in Pearl River Delta using satellite remote sensing imagery.The study reveals that from 2012 to 2023,the nighttime light environment in marine protected areas of Pearl River Delta has significantly deteriorated.The total light value incresed from 9 566.2 to 23 701.3 nW/cm2·sr,and the average value increased from 0.8 to 1.9 nW/cm2·sr,with scenic spots andwetland parks experiencing the highest levels of light pollution.In terms of spatial distribution,protected areas closer to land experience higher levels of light pollution,and the edges of these areas are more affected than their interiors.Among the different cities,marine protected areas in Shenzhen and Dongguan suffer the most severe light pollution,while Jiangmen and Huizhou have the lowest levels.The spatial distribution patterns of light pollution demonstrate a close relationship between the nighttime light environment of protected areas and the intensity of coastal development.The study results will provide a scientific basis for optimizing the nighttime light environment of marine protected areas from the perspective of land-sea coordination.
land-sea coordinationPearl River Deltamarine protected areaslight pollution
NETL
NSTL
万方数据
