[Objective]The paper was to study the spatial distribution of Batocera horsfieldi in different ash forests.[Method]The number of excretory holes,eclosion holes and channels of B.horsfieldi in five different stand type...[Objective]The paper was to study the spatial distribution of Batocera horsfieldi in different ash forests.[Method]The number of excretory holes,eclosion holes and channels of B.horsfieldi in five different stand types of ash forests(patch forest,yard greening forest,highway street forest,urban street forest and yard street forest)was investigated,and their spatial distribution characteristics were statistically analyzed.[Result]The aggregation index,Iwao regression equation and Taylor power exponential equation were calculated.The excretory holes,eclosion holes and channels of B.horsfieldi attacking five different stand types of ash forests showed aggregated distribution,but the aggregation index parameters,αandβof Iwao regression equation,lga and b of Taylor power exponential equation varied with different stand types.[Conclusion]B.horsfieldi has caused serious harms to ash tree which is an important landscaping tree in the Yellow River delta area,and it is of guiding value to sampling investigation and prevention and control of B.horsfieldi.展开更多
基金Supported by National Natural Science Foundation of China(31770689)。
文摘[Objective]The paper was to study the spatial distribution of Batocera horsfieldi in different ash forests.[Method]The number of excretory holes,eclosion holes and channels of B.horsfieldi in five different stand types of ash forests(patch forest,yard greening forest,highway street forest,urban street forest and yard street forest)was investigated,and their spatial distribution characteristics were statistically analyzed.[Result]The aggregation index,Iwao regression equation and Taylor power exponential equation were calculated.The excretory holes,eclosion holes and channels of B.horsfieldi attacking five different stand types of ash forests showed aggregated distribution,but the aggregation index parameters,αandβof Iwao regression equation,lga and b of Taylor power exponential equation varied with different stand types.[Conclusion]B.horsfieldi has caused serious harms to ash tree which is an important landscaping tree in the Yellow River delta area,and it is of guiding value to sampling investigation and prevention and control of B.horsfieldi.
