ASSESSMENT OF LIGHT POLLUTION IMPACT ON PROTECTED AREAS IN CHINA
- 1Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences, Beijing, China
- 2University of the Chinese Academy of Sciences, Beijing, China
- 3Key Laboratory of Earth Observation Hainan Province, Sanya, China
- 4Sanya Institute of Remote Sensing, Sanya, China
- 5Key Laboratory of Spatial Data Mining & Information Sharing of Ministry of Education, Spatial Information Research Center of Fujian Province, Fuzhou University, Fuzhou, China
Keywords: Night-time light, protected areas, light pollution, DMSP/OLS, China
Abstract. The Protected Areas (PAs) with natural, ecological and cultural value play important role in biological processes, biodiversity and ecosystem service. During the past years of rapid urban expansion in China, the spatial range and intensity of light pollution unprecedented increase. Historically, optical remote sensing and field survey data had been used to reveal that human activities impacted on PAs for individual areas and few papers documented the issue of light pollution impact on PAs at national scale. Here, time series night-time light satellite images of Defense Meteorological Satellite Program Operational Linescan System (DMSP-OLS) were selected to assess the light pollution impacted on PAs in China. The method we proposed can be effectively applied to assess the impact of light pollution on PAs and the percent of dark PAs decreased by 35.38 % from 1992 to 2012 at nationwide. The trend of light pollution of most PAs in stable, however, light pollution of the local area is increase significantly, especially in northern Xinjiang, Gansu, Xizang, Yunnan, Jiangsu and Shandong. Considering the current status of light pollution encroach into PAs, two strategies of appropriate buffer zone and wide measured for light pollution are also recommend.