气象因子与毛竹林节肢动物群落的关系

利用2001年9月到2002年8月的气象资料和对毛竹林节肢动物群落的定位系统调查数据,分析了月平均气温、月极端高温、月极端低温、月降水量、每月日降水量大于0.1 mm的天数、月日照总时数和月平均相对湿度等7个气象要素与节肢动物群落及毛竹叶部主要害虫种群的关系。结果表明:气象因子与节肢动物群落的关系集中表现为月平均气温与林下层类群丰富度、竹冠层类群物种多样性的负相关;与毛竹叶部主要害虫种群的关系主要表现为月平均相对湿度与毛竹害螨混合种群的负相关,以及每月日降水量大于0.1 mm的天数与蠕须盾蚧、刚竹毒蛾种群的正相关。

Relationships between climate factors and the arthropod community in the forest of Phyllostachys heterocycla cv. pubescens

Based on the field survey results of the arthropod community in the forest of Phyllostachys heterocycla cv.pubescens (Mazel) Ohwi and the data of climate factors which including the mean air temperature in a month,the highest air temperature in a month,the lowest air temperature in a month,total rainfall in a month,days of rainfall beyond 0.1 mm in a month,the total hours of sunlight in a month and mean relative humidity in a month,in Sanming of Fujian Province from September 2001 to August 2002,the relationship between the climate factors and the arthropod community or the main leaf pest populations on the bamboo leaves were analyzed by means of canonical correlativity and Pearson correlativity methods respectively.The results indicated that the climate factor of mean air temperature in a month showed a significant and negative correlation with the arthropod richness in the lower of the forest or the arthropod species diversity in the canopy of the forest.In the same way,the factor of mean relative humidity in a month showed a significant and negative correlation with the mixed population number of the phytophagous mites on the bamboo leaves.However,the factor days of rainfall beyond(0.1 mm) in a month showed a significant and positve correlation with the populations Kuwanaspis vermiformis(Takahashi)and Pantana phyllostachysae Chao.