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Citation:

Climatological Zonation of Incidence of Sphaeropsis sapinea Distribution in South China

  • Received Date: 2004-12-21
  • The pine shoot blight(Sphaeropsis sapinea) in epidemic zones were divided into 3 types on the basis of investigation into disease damage and characteristics of 17 counties(cities) in the south of China which were light(no) epidemic zone,moderate epidemic zone and heavy epidemic zone.The correlation analysis between disease index of S.sapinea and meteorological factors in the south of China showed that the disease index correlated significantly with the following factors: annual mean humidity,humidity,rainfall and rainfall days of April and May.According to meteorological factors,a regression equation was established as follows: Y=98.60+13.54x1-9.33x2-3.26x3+0.07x4+0.07x5-11.97x6+3.26x7(R=0.933 3).In this formula,Y represents the forest disease index and x1-x7 represent meteorological factors.Incidence of S.sapinea in 9 provinces of the south of China was forecasted,according to the model.The effective disease integrated control measures were put forward according to the epidemic regional distributes of S.sapinea.
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  • [D]1南京:南京林业大学森林资源与环境学院, 1999

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Climatological Zonation of Incidence of Sphaeropsis sapinea Distribution in South China

  • 1. College of Forest Resources and Environment of Nanjing Forestry University,Nanjing 210037,Jiangsu,China
  • 2.  Kunshan Exit-Entry Inspection and Quarantine Bureau of Jiangsu,Kunshan 215301,Jiangsu,China

Abstract: The pine shoot blight(Sphaeropsis sapinea) in epidemic zones were divided into 3 types on the basis of investigation into disease damage and characteristics of 17 counties(cities) in the south of China which were light(no) epidemic zone,moderate epidemic zone and heavy epidemic zone.The correlation analysis between disease index of S.sapinea and meteorological factors in the south of China showed that the disease index correlated significantly with the following factors: annual mean humidity,humidity,rainfall and rainfall days of April and May.According to meteorological factors,a regression equation was established as follows: Y=98.60+13.54x1-9.33x2-3.26x3+0.07x4+0.07x5-11.97x6+3.26x7(R=0.933 3).In this formula,Y represents the forest disease index and x1-x7 represent meteorological factors.Incidence of S.sapinea in 9 provinces of the south of China was forecasted,according to the model.The effective disease integrated control measures were put forward according to the epidemic regional distributes of S.sapinea.

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