论文部分内容阅读
北半球500hPa高度场的遥相关指数(遥相关指数)是一个综合了气温,降水以及气压等众多气象因素的气候变化指数,很多生物学现象都与其有关;为了探究遥相关指数是否对我国的草地螟的发生危害有影响,作者分析了我国草地螟Loxostege sticticalisL.成虫物候期及幼虫发生面积的变化趋势及两者与遥相关指数的相关关系,结果表明:我国草地螟成虫始见期年际间有显著提前的趋势,平均每年提前0.40d,与1—5月极地-欧亚型遥相关指数均值(POL1-5)相关性最大;终见期有显著延后的趋势,平均每年延后1.31d,与6—10月东太平洋型遥相关指数均值(EP-NP6-10)相关性最大;全国草地螟幼虫发生面积年际间有显著增长的趋势,平均每年增长57.07khm2,与1—10月东大西洋型遥相关指数均值(EA1-10)相关性最大。
The teleconnection index (teleconnection index) of the 500hPa geopotential height field in the Northern Hemisphere is a climatic change index that integrates many meteorological factors such as temperature, precipitation and barometric pressure, and many biological phenomena are related to it. In order to explore whether the teleconnection index affects Grasshopper The author analyzed the change trend of phenophase and larvae occurrence area of Loxostege sticticalis L. and the correlation between them and the teleconnection index. The results showed that: Significantly ahead of the trend, an average of 0.40d early each year, and 1-5 months the polar - Eurasian type teleconnection index (POL1-5) the most relevant; the final duration of a significant delay in the trend, the average delay of 1.31d (EP-NP6-10), and the area of larvae of Chinese meadow borer had a significant annual increase with an average annual increase of 57.07khm2, as compared with January-October Eastern Atlantic teleconnection index (EA1-10) has the highest correlation.