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Citation:

Spatial Pattern of Dendrolimus punctatus Incidence Rate Based on Meteorological Factors

  • Received Date: 2015-09-10
  • [Objective]Taking the average incidence rate based on China's nationwide data from 2002-2012 as indicator to predict the potential trend of Dendrolimus punctatus incidence rate. [Method]By means of partial least squares regression, the regression equation about average incidence rate and the related meteorological factors was obtained. Combined with the geographic spatial data and future meteorological data, the spatial pattern model of the average incidence rate of D. punctatus was established. [Result]The spatial pattern model of D. punctatus' average incidence rate built by 12 selected meteorological factors has the prediction accuracy of 86.98%. Based on this model, the spatial pattern models for 2020s, 2050s, and 2080s were established. It was predicted that compared with 2002-2012, the area of moderate and severe insect pests in East and Central China would significantly increase, and there would be a trend of spreading. The mild incidence area would decrease in East China, while the mild incidence area would has a trend of amplification in parts of Southern China. [Conclusion]The spatial pattern model obtained by partial least squares regression method can be used to predict the potential changes of the average incidence rate of D. punctatus in China.
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Spatial Pattern of Dendrolimus punctatus Incidence Rate Based on Meteorological Factors

  • 1. Research Institute of Resources Insects, Chinese Academy of Forestry, Kunming 650224, Yunnan, China

Abstract: [Objective]Taking the average incidence rate based on China's nationwide data from 2002-2012 as indicator to predict the potential trend of Dendrolimus punctatus incidence rate. [Method]By means of partial least squares regression, the regression equation about average incidence rate and the related meteorological factors was obtained. Combined with the geographic spatial data and future meteorological data, the spatial pattern model of the average incidence rate of D. punctatus was established. [Result]The spatial pattern model of D. punctatus' average incidence rate built by 12 selected meteorological factors has the prediction accuracy of 86.98%. Based on this model, the spatial pattern models for 2020s, 2050s, and 2080s were established. It was predicted that compared with 2002-2012, the area of moderate and severe insect pests in East and Central China would significantly increase, and there would be a trend of spreading. The mild incidence area would decrease in East China, while the mild incidence area would has a trend of amplification in parts of Southern China. [Conclusion]The spatial pattern model obtained by partial least squares regression method can be used to predict the potential changes of the average incidence rate of D. punctatus in China.

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