CORRELATION ANALYSIS OF FOREST FIRES AND SUNSPOTS  

作　　者：Wang Shuyang Zhang Yanli Luo ShumeiNortheast Forestry University 

出　　处：《Journal of Northeast Forestry University》1992年第2期54-58,共5页

摘　　要：This paper analyses the relationship of forest fires and sunspots in Hcilongjiang Province in the past 40 ycars(1950-1989). The results indicated that each of the forest fire indexes such as forest Fire rate(y1), times of forest firc(Y2), average forest fire area for one time Y4 (equals the Y5 / Y2) and total forest fire arca(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.This paper analyses the relationship of forest fires and sunspots in Hcilongjiang Province in the past 40 ycars(1950-1989). The results indicated that each of the forest fire indexes such as forest Fire rate(y1), times of forest firc(Y2), average forest fire area for one time Y4 (equals the Y5 / Y2) and total forest fire arca(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.

关 键 词：Forest fire SUNSPOT RELATIONSHIP 

分 类 号：S7[农业科学—林学]