气候要素对松材线虫病疫情的影响研究  

The Effects of Climatic Factors on Pine Wilt Disease

作　　者：习妍[1] 牛树奎[1] 

机构地区：[1]北京林业大学林学院,北京100083

出　　处：《林业资源管理》2008年第4期70-76,共7页Forest Resources Management

基　　金："973"国家重点基础项目(2002CB111404)

摘　　要：引入典范对应分析方法,研究了气候要素对松材线虫病疫情的影响。结果表明,不同的气象因子对松材线虫病的影响大小不同,并且在不同的松材线虫病侵染阶段也有差异。年平均风速以及与其相关的年蒸发量和相对湿度是影响定海区松材线虫病发病面积的最主要因素;年平均气温是影响定海区松材线虫病发病密度最主要的因素;冬春季降水过多会导致松材线虫病疫情严重,而6月份降水量越大,松材线虫病疫情越轻;相对湿度也是松材线虫病疫情的一个较重要影响因素,主要表现在3-5月份,与疫情轻重程度呈正相关。Forest conservation has been taken since the outbreak of pine wilt disease in Dinghai district, Zhoushan city of Zhejiang Province, and the disease is almost under natural conditions. Canonical correspondence analysis is introduced to research the effects of climatic factors on pine wilt disease epidemic situation. The disease is affected by different climatic factors with different degrees at different stages. Mean annual wind speed related with annual evaporation and relative humidity is the most important factor influencing the pine wilt disease epidemic area. Annual mean temperature is the major factor influencing the intensity of pine wilt disease epidemic situation in Dinghai district. Too much precipitation in spring and winter leads to a serious epidemic situation in Dinghai district. The more precipitation in June, the lighter the epidemic situation is. Relative humidity is prevalent from March to May, being positively correlated with epidemic degrees.

关 键 词：松材线虫病 气候要素 典范对应分析 

分 类 号：S761[农业科学—森林保护学] S763.3[农业科学—林学]