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| 基于遥感数据的长沙市主城区夜间光污染演变特征分析 |
| Analysis on Evolution Characteristics of Nighttime Light Pollution in the Main Urban Area of Changsha Based on Remote Sensing Data |
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| DOI： |
| 中文关键词: 夜间光污染 光污染面积 演变特征 遥感数据 长沙市主城区 |
| 英文关键词: Nighttime light pollution Light pollution area Evolution characteristic Remote sensing data Main urban area of Changsha |
| 基金项目:国家自然科学基金资助项目（41971079， 41671059）；湖南省教育厅科学研究基金资助项目（22B0517） |
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| 中文摘要: |
| 以长沙市主城区为研究区，基于2000—2022年共23期“类NPP-VIIRS”夜光数据，提取历年夜间光污染面积，并对不同程度光污染面积进行M-K突变检验，获得近23年长沙市主城区夜间光污染的演变特征。结果表明：夜间光污染分布范围不断向外扩张，至2020年基本达到饱和状态；2000—2022年夜间光污染的面积整体呈扩张趋势，由21625 km2扩张至60975 km2，扩张了约182倍，而扩张速度则整体呈下降趋势，由2335%下降到-020%；2015—2019年无、轻度、中度光污染面积突变减少，而严重光污染面积则突变增加，2006—2010年重度光污染面积突变增加。 |
| 英文摘要: |
| Taking the main urban area of Changsha as the study area， the annual nighttime light pollution area was extracted based on a total of 23 periods of “NPP VIIRS” night light data from 2000 to 2022. M K Test was conducted on different degrees of nighttime light pollution area to obtain the evolution characteristics of nighttime light pollution in the main urban area of Changsha in the past 23 years. The results showed that the distribution range of nighttime light pollution continued to expand outward and reached a saturation state in 2020. From 2000 to 2022， the area of nighttime light pollution showed an overall expansion trend， from 21625 km2 to 60975 km2， with an increasing of about 1.82 times. The expansion speed showed an overall decreasing trend， from 2335% to -020%. From 2015 to 2019， the sharp change in the area of no， mild， moderate light pollution decreased， while that in the area of severe light pollution increased. From 2006 to 2010， the sharp change in the area of severe light pollution increased. |
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