By using Julian Date methods,this paper studied the changes of forest fire occurring date during 1980～2006 in Inner Mongolia Daxing’anling forest region,as well as discussed the changes of fire season and forest fir...
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By using Julian Date methods,this paper studied the changes of forest fire occurring date during 1980～2006 in Inner Mongolia Daxing’anling forest region,as well as discussed the changes of fire season and forest fire regime under global *** results indicated that Julian Date of fires changed obviously,*** fires Julian Date in spring extended into summer markedly,and at the same time summer fires were mostly caused by lightning *** Julian Date of human-caused fires did not evidently *** recent some years,the forest fires occurred in summer actually exceeded the sum of fires occurred in spring and ***,the fire seasons are not only in spring and autumn,so long as the litter has not been covered by snow,forest fires possibly take *** the future,under a warmer climate,the authors’ suggestion for forest fire management departments is to adequately understand these forest fire regime changes and make adaptive policies,in order to reduce the damage induced by forest fires.
Batocera horsfieldi,a forestry pest,was an important stem-borer in *** Pest Risk Analysis(PRA) of *** was evaluated in order to providing more information to prevent the further spreading and intergreted control of th...
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Batocera horsfieldi,a forestry pest,was an important stem-borer in *** Pest Risk Analysis(PRA) of *** was evaluated in order to providing more information to prevent the further spreading and intergreted control of this *** to the methods of international PRA,the risk level of *** was estimated by qualitative and quantitative analysis,and its control countermeasure was *** results of qualitative analysis showed that *** had lots of hosts,and its wide distribution,high adaptability and the difficulty of eradication made the pest damages forestry production *** to the quantitative analysis,the PRA value of the pest was 2.04,showing that it was one of the high perilous forestry pests in *** and various control measures must be strengthened to prevent the spreading and damage of *** were given that *** would be controlled sustainably by releasing Dastarcus helophoroides,a natural enemy of ***,in damaged forests.
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