中国省市县夜间灯光栅格数据

夜晚灯光，一方面直接反映着当地的工业化水平和城市化水平；另一方面，也能部分反映着人口集中分布情况。同时，根据地表夜间灯光亮度，从而在一定程度上表征人类活动强度，长时间序列的夜间灯光数据对于城市发展研究具有重要参考价值。  目前，夜间灯光数据主要用于城镇扩展研究，社会经济因子估算以及其它环境、灾害、渔业、能源等领域。

Nighttime lights directly reflect the local levels of industrialization and urbanization on one hand, and partially indicate the distribution of population concentration on the other. Meanwhile, the brightness of surface nighttime lights can characterize the intensity of human activities to a certain extent. Long-time-series nighttime light data holds important reference value for urban development research.
Currently, nighttime light data is mainly applied in research on urban expansion, estimation of socio-economic factors, and other fields such as environment, disaster, fishery and energy.