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为摸清萧氏松茎象Hylobitelus xiaoi zhang受害松林的环境因子特征,应用林地环境因子常规观测方法进行观测,结果表明:8月份受害松林地面平均光照强度、地面温度、距地表20cm高处温度、5cm深处土壤温度、70cm高处蒸发量分别为374.8lx、25.4℃、27.1℃、25.5℃、1.6mm,分别比健康松林低94.8%、7.0%、4.6%、5.9%、27.3%,受害松林在距地表20cm高处空气相对湿度为85.8%,比健康松林高7.1%。由实验得知,萧氏松茎象受害松林的光照强度、地面温度、空气温度、土壤温度、蒸发量均比健康松林低,空气相对湿度比健康松林高,距地表越近,这一差异就越明显。两类林分中的光照强度、空气温度、土壤温度、空气相对湿度4因子均存在明显差异,是影响萧氏松茎象发生的重要因素。
In order to find out the characteristics of environmental factors of Hylobitelus xiaoi zhang afforestation pine forests and to observe them by routine observation methods of forest environmental factors, the results showed that the average light intensity, the ground temperature, the temperature at the height of 20 cm from the ground surface, The soil temperature at 5cm depth and the evaporation at 70cm height were 37.4.8lx, 25.4 ℃, 27.1 ℃, 25.5 ℃ and 1.6mm, respectively, which were 94.8%, 7.0%, 4.6%, 5.9% and 27.3% At a height of 20 cm above the surface, the air relative humidity was 85.8% and 7.1% higher than that of the healthy pine forest. According to the experiment, the difference of light intensity, ground temperature, air temperature, soil temperature and evaporation of damaged Pinus sylvestris var.mongolica pine forest is lower than that of healthy pine forest and the air relative humidity is higher than that of healthy pine forest and closer to the surface The more obvious. There were significant differences in light intensity, air temperature, soil temperature and air relative humidity among the two types of stands, which were the important factors affecting the development of Hylobiteoma xiensis.