气候变化领域集成服务门户(CCPortal): Africa's protected areas are brightening at night: A long-term light pollution monitor based on nighttime light imagery

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DOI	10.1016/j.gloenvcha.2021.102318
	Africa's protected areas are brightening at night: A long-term light pollution monitor based on nighttime light imagery
	Zheng Z.; Wu Z.; Chen Y.; Guo G.; Cao Z.; Yang Z.; Marinello F.
发表日期	2021
ISSN	9593780
卷号	69
英文摘要	As the cornerstone of biodiversity conservation, the core value of protected areas (PAs) is to maintain an area's natural conditions (both day and night) and to restrict human-caused disturbances to biology and the environment. Although the value of PAs has been universally recognized, light pollution within them is worsening as a result of the widespread use of artificial illumination devices. Previous studies have focused on light pollution in PAs and evaluated light radiation using nighttime light imagery. However, given the scale and span of these studies (national scale and over short periods), PA light pollution research should be advanced further. In this paper, we conducted long-term (1992–2018) monitoring and evaluation of light pollution in African PAs using aligned multi-sensor NTL data. The results showed that 1) Africa PAs were impacted by increasingly severe artificial lights during 1992–2018, with all three light indices showing an accelerating increasing trend. 2) The number of light-polluted PAs also rapidly increased, with more than 80% of PAs experiencing aggravated light pollution as of 2018. Different types of PAs had heterogeneous light pollution, which penetrates indiscriminately into all PA regulation levels. 4) Light pollution in African PAs was divided into three types, including outside invasion, internal sources, and mixed pollution. 5) Human activity intensity surrounding the PAs was highly correlated with light pollution within them, with a maximum effect distance of approximately 245 km. This paper provides new approaches for understanding the patterns of light pollution within PAs, and is a valuable reference for future PA planning. © 2021 Elsevier Ltd
关键词	Africa Human activities Light pollution Nighttime light Protected areas
英文关键词	anthropogenic effect; biodiversity; conservation status; human activity; light pollution; pollution monitoring; protected area; Africa; Varanidae
语种	英语
来源期刊	Global Environmental Change
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/205563
作者单位	Department of Land, Environment, Agriculture and Forestry, University of Padova, Padova, Veneto Region 35020, Italy; School of Geography and Remote Sensing, Guangzhou University, Guangzhou, Guangdong 510006, China; Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou, Guangdong 511458, China
推荐引用方式 GB/T 7714	Zheng Z.,Wu Z.,Chen Y.,et al. Africa's protected areas are brightening at night: A long-term light pollution monitor based on nighttime light imagery[J],2021,69.
APA	Zheng Z..,Wu Z..,Chen Y..,Guo G..,Cao Z..,...&Marinello F..(2021).Africa's protected areas are brightening at night: A long-term light pollution monitor based on nighttime light imagery.Global Environmental Change,69.
MLA	Zheng Z.,et al."Africa's protected areas are brightening at night: A long-term light pollution monitor based on nighttime light imagery".Global Environmental Change 69(2021).