基于VIIRS数据的广东省自然保护地保护与发展格局分析

The Protection and Development Pattern Analysis of Protected Nature Areasin the Guangdong Based on VIIRS

研究首次将VIIRS时间序列夜光遥感影像应用于自然保护地研究中,以自然保护地矢量范围为基础数据,提取2015—2020连续6年广东省自然保护地的夜间灯光数据,利用夜光总量、增长率指标和标准差椭圆模型分析了广东省自然保护地保护与发展格局。结果表明,2015—2020年广东省自然保护地的夜光总量呈现增长态势,且沿着珠江口向东南沿海方向蔓延;从分布区域来看,珠三角地区自然保护地的夜光总量规模和夜光增长规模明显高于其他地区;从保护地级别来看,市级自然保护地夜光总量规模和夜光增长规模均较大,其发展较快;从保护地类型来看,地质公园夜光总量规模和夜光增长规模最大,展现出强劲的发展态势。在今后的发展规划中,因地制宜发挥区位与生态优势,积极探索保护与发展的平衡点,在保护的基础上充分挖掘粤北生态发展区自然保护地和县级自然保护地的科学利用潜力,促进沿海地区与内陆地区自然保护地协调发展,为全省自然保护地发展注入新的力量。

Taking the nature-protected area as our study area,we first used the time series data fitting method in TIMESAT to improve the quality of VIIRS nighttime light remote sensing images.By using the vector range of nature protected area night light data,the 6 years night lighting values in Guangdong protected nature areas could be captured,and the degree of human social and economic activities can be intuitively reflected.The paper analyzed the protection and development pattern of protected nature areas in Guangdong from 2015 to 2020 by selecting various indicators and models,such as the sum of light,light growth rate and standard deviation ellipse.The main research contents and conclusions are as follows:1.From 2015 to 2020,the sum of light in Guangdong protected nature areas showed an increasing trend developed in the southeast direction along the Pearl River Estuary.2.The sum of light and light growth rate in Pearl River Delta is significantly compared with that of other regions.3.The natural protected areas of the municipality has greater development potential since the sum of light and light growth rate are large.4.Recently,the geological parks is showing a strong development industry.All above shows that in future development planning,it is necessary to take full consideration of the regional and ecological advantages and disadvantages of the nature-protected area in Guangdong,so as to pay attention to the fast development of protected nature areas,to promote the coordinated development of coastal and inland areas and to further explore the nature protected area developing potential of ecological conservation zone and counties in Guangdong,to inject new external forces into the development of protected nature areas.