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应用生态学报 ›› 2023, Vol. 34 ›› Issue (6): 1601-1609.doi: 10.13287/j.1001-9332.202306.020

• 研究论文 • 上一篇    下一篇

珠三角自然保护地夜间光环境的时空动态及敏感距离

江本砚1, 张玉莉1, 李珊1*, 李建军1, 郑子豪2, 王洪光3   

  1. 1广州大学建筑与城市规划学院, 广州 510006;
    2广州大学地理科学与遥感学院, 广州 510006;
    3广州大学物理与材料科学学院, 广州 510006
  • 收稿日期:2022-11-04 接受日期:2023-03-15 出版日期:2023-06-15 发布日期:2023-12-15
  • 通讯作者: *E-mail: lishan1211@outlook.com
  • 作者简介:江本砚, 女, 1985年生, 博士, 讲师。主要从事公园绿地与暗夜保护的相关研究。E-mail: saupbyan206@gzhu.edu.cn
  • 基金资助:
    国家自然科学基金重点项目(12133004)、广东省基础与应用基础研究基金项目(2022A1515110331)、广州市科技计划项目(202102011330190042)和广州大学“2+5”学科与科研创新平台科研项目(PT252022023)

Spatio-temporal dynamics and sensitive distance of nighttime light environment in Pearl River Delta Protected Areas, China

JIANG Benyan1, ZHANG Yuli1, LI Shan1*, LI Jianjun1, ZHENG Zihao2, WANG Hongguang3   

  1. 1School of Architecture and Urban Planning, Guangzhou University, Guangzhou 510006, China;
    2School of Geography and Remote Sensing, Guangzhou University, Guangzhou 510006, China;
    3School of Physics and Materials Science, Guangzhou University, Guangzhou 510006, China
  • Received:2022-11-04 Accepted:2023-03-15 Online:2023-06-15 Published:2023-12-15

摘要: 自然保护地是保障国土生态安全的重要屏障,而光污染正在对自然保护地生态系统造成新的威胁,这一现状在城市群环境中尤为明显。本研究选取珠三角城市群的自然保护地为实例对象,利用卫星遥感灯光数据、土地覆盖类型及兴趣点等多源大数据,量化分析2000—2018年该区域内自然保护地夜间灯光的时空动态、自然保护地周边夜间光环境与人类活动的相关性,并识别出城市尺度下自然保护地对人工光干扰的敏感距离。结果表明: 2000—2018年间,珠三角区域内自然保护地夜间灯光总值从71107 nanoW·cm-2·sr-1增长至127682 nanoW·cm-2·sr-1,每像元均值从15.3 nanoW·cm-2·sr-1上升至23.7 nanoW·cm-2·sr-1,照明比例从73.3%扩大到86.4%,说明该区域内自然保护地夜间光环境面临着累积恶化风险与严峻挑战。珠三角核心区域自然保护地夜间灯光亮度远高于外围区域如肇庆和惠州,但外围区域自然保护地受干扰的扩张程度却高于核心区域。自然保护地内部夜间光环境与周边人类活动强度呈正比,自然保护地对周边人工光干扰的最敏感距离为10 km,干扰程度在30 km之后趋于稳定。建议将珠三角自然保护地边界外0~10 km划为灯光管控核心区、10~20 km划为管控缓冲区。

关键词: 自然保护地, 夜间光环境, 敏感距离, 珠三角

Abstract: Protected areas (PAs) are important barriers to ensure the ecological security of territory. Light pollution is a threat to PAs, which is particularly obvious in the urban agglomeration environment. We used multi-source big data (satellite remote sensing light data, land cover types and points of interest) to quantitatively analyze the temporal and spatial dynamics of nighttime light in the PAs of the Pearl River Delta (PRD) urban agglomeration from 2000 to 2018, the correlation between the night light environment within the PAs and human activity intensity outside, as well as the sensitive distance of the PAs to artificial light interference. The results showed that the total value of nighttime light data of PAs in the PRD increased from 71107 nanoW·cm-2·sr-1 to 127682 nanoW·cm-2·sr-1 from 2000 to 2018, the mean value per pixel increased from 15.3 nanoW·cm-2·sr-1 to 23.7 nanoW·cm-2·sr-1, and the lighted ratio increased from 73.3% to 86.4%, indicating that the nighttime light environment of PAs in the region were facing cumulative deterioration risks and serious challenges. The nighttime light intensity of the PAs in the core area of the PRD was much higher than that in the peripheral areas such as Zhaoqing and Huizhou, whereas the expansion degree of the PAs in the peripheral areas was higher than that in the core area. The nighttime light environment inside the PAs was positively correlated with the intensity of human activities around it. The most sensitive distance of the PAs to the artificial light interference around it was 10 km, and the interference degree tended to be stable after 30 km. We proposed that 0-10 km area outside the boundary of the PAs should be the light control core zone and 10-20 km area as the control buffer zone.

Key words: protected area, nighttime light environment, sensitive distance, Pearl River Delta