基于MODIS数据的湖北省秸秆焚烧火点监测研究

Research on Monitoring of Straw Burning Point in Hubei Based on MODIS Data

本文利用MODIS全天四景1 km分辨率卫星影像数据,采用基于上下文的方法进行热异常火点提取,并在土地利用与土地覆盖、地表温度等数据的辅助下,实现建筑物等虚假火点的去除。最后,与湖北省土地利用覆盖图结合生成县级秸秆焚烧火点监测专题图。本文结合火点分布图对湖北省2015年9月1日至11月26日的火点数目进行了统计,其结果表明,通过遥感手段对秸秆焚烧进行监测,可以提供给各级监管部门具有时效性的秸秆焚烧信息,同时也提高了秸秆焚烧的预警与监控能力。

This paper uses all day four views 1km resolution satellite image data in MODIS. And a method based on context is used to extract abnormal fire points;with the assistance of the data of land use, land cover, land surface temperature, we achieved the removal of false fire point such as buildings. Finally, combined with land use map of Hubei Province, a thematic map of burning fire monitoring at county level is generated. In this paper, the fire point number in Hubei province from September 1, 2015 to November 26th was statistically analyzed by the fire point distribution map. The results show that, monitoring straw burning by remote sensing method, time-efficient straw burning information can be provided to the regulatory authorities at all levels. At the same time, it also improves the warning and monitoring ability in straw burning monitoring.