Abstract: A dataset of heat source points for straw incineration in the three provinces of northeast China from 2015 to 2019 was established on the basis of the monitoring results of heat source points provided by the FY series of polar-orbiting meteorological satellites. The temporal and spatial variation trend of the heat source of straw burning in the three northeastern provinces in 5 years was analyzed based on several analysis method including the center of gravity shift, Moran index, etc. The results showed that the straw burning heat source monitoring frequency in the three northeastern provinces in the five years presented a characteristic of volatility. The heat sources of straw incineration in the three northeastern provinces were mainly observed in the spring and autumn seasons, and it mainly occured in Heilongjiang province. However, the heat source of straw burning in the three northeastern provinces was mainly concentrated near the border of Heilongjiang and Jilin, and there was a trend of shifting from Heilongjiang to Jilin. The corresponding agglomeration effect gradually weakens and the low-value gathering areas continue to expand. However, the distribution of heat source points for straw incineration is still relatively concentrated in the main agricultural areas.

Key words: straw burning, heat source, time and space distribution, three northeast provinces