Abstract
This paper analyses the relationship of forest fires and sunspots in Hcilongjiang Province in the past 40 years(l950–1989). The results indicated that each of the forest fire indexes such as forest fire rate(Y1), times of forest fire(Y2), average forest fire area for one timeY4 (equals theY5 / Y2) and total forest fire area(Y5) has a negative correlation with mean annual relative sunspots of the same year; total times of forest fire inside and outside of forest stands(Y3) has a positive correlation with sunspots. The 5 indexes stated above has a similar relation to last year’s mean annual relative sunspots.
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Shuyang, W., Yanli, Z. & Shumei, L. Correlation analysis of forest fires and sunspots. J. Northeast For. Univ. 3, 54–58 (1992). https://doi.org/10.1007/BF02843038
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DOI: https://doi.org/10.1007/BF02843038