基于MODIS的河南省秸秆焚烧遥感监测与分析

文中采用MODIS二级产品MOD14数据,以火点像元亮温特征为依据,提取2000、2008、2014年每年5月29至6月14河南省秸秆焚烧火点分布,分析秸秆焚烧时空分布特征。研究表明:河南省14年间秸秆焚烧火点个数和面积呈上升趋势;14年间河南省秸秆焚烧由北部和中部地区逐渐向西南和东南地区扩散,且西南和东南地区的秸秆焚烧现象较为严重,其中周口、驻马店、信阳、南阳等市秸秆焚烧现象较突出,安阳、焦作、新乡等市秸秆焚烧现象明显减弱;结合2014年河南省空气污染指数分析秸秆焚烧对空气质量的影响表明:秸秆焚烧会对空气质量污染产生重要影响。

Remote sensing monitoring and analysis of straw burning in Henan Province based on MODIS

In this paper,MODIS Level 2 product is used,which is based on the fire spot pixel brightness temperature characteristics to extract the fire spot distribution of straw burning in Henan Province from May 29 to June 14 in 2000,2008 and 2014. In addition, the temporal and spatial distribution characteristics of straw burning are analyzed.The result shows that the number and area of fire spot of straw burning are increasing over the past 14 years in Henan Province.T he burning of straw in Henan Province was gradually spread from the northern and central regions to the southwestern and southeastern regions.During the 14 years and straw burning in the southwestern and southeastern regions was more serious.Among them,the phenomenon of straw burning in Zhoukou,Zhumadian,Xinyang and Nanyang remains serious,and the phenomenon of straw burning in Anyang,Jiaozuo and Xinxiang is obviously weakened.The influence of straw burning on air quality is analyzed according to the air pollution index of Henan Province in 2014.The result shows that straw burning has a certain impact on air quality,but not the only index of influencing the air quality.