珠三角地区涉海自然保护地光污染特征分析
Light Pollution Characteristics in Marine-Related Protected Areas in Pearl River Delta
江本砚 1简淑仪 1李建军 1郭源园1
作者信息
摘要
光污染是第四大污染类型,对海洋生态系统存在极大危害.文章基于卫星遥感影像定量分析了珠三角地区涉海自然保护地光污染的演变特征和空间分布规律.研究发现,2012-2023 年珠三角涉海保护地的夜间光环境显著恶化,灯光总值从 9 566.2 nW/cm2·sr增加到 23 701.3 nW/cm2·sr,均值从 0.8 nW/cm2·sr增加到 1.9 nW/cm2·sr,其中风景名胜区和湿地公园所受光污染程度最深.从空间分布来看,距离陆地越近的自然保护地受到的光污染程度越高,自然保护地的边缘光污染程度高于内部光污染程度.从不同城市的分布来看,深圳和东莞的涉海保护地光污染程度最高,江门和惠州最低.光污染的空间分布规律显示出自然保护地夜间光环境与沿海开发强度的密切联系.研究结果将为陆海统筹视角下涉海保护地夜光环境的优化提供科学依据.
Abstract
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.
关键词
陆海统筹/珠三角/涉海保护地/光污染Key words
land-sea coordination/Pearl River Delta/marine protected areas/light pollution引用本文复制引用
出版年
2024
NETL
NSTL
万方数据