海南山蛭种群数量动态与气象因素关系研究

Studies on the relationship between the population dynamic of Haemadipsa hainana and climatic factors

在海南岛橡胶林内 ,每月观测海南山蛭 H aemadipsa hainana种群数量 1次 ,已观测 8a。用逐步回归分析方法研究了 1 0个气象因子对海南山蛭种群数量的影响。结果表明 :1 )每年海南山蛭种群数量不同 ,8a间影响海南山蛭种群数量的主要气侯因素是 X1(月雨量 )、X3(月雨日 )和 X5(月有露日数 ) ;2 )海南岛 5～ 1 0月份为雨季 ,海南山蛭种群数量明显增大 ,影响山蛭种群数量的主要气候因素是 X5和 X10 (月最大风速和 )。从 1 1月份至次年 4月份为旱季 ,山蛭种群数量小 ,主要影响气候因素是 X1,3) 8a全部 2 3条回归方程中 ,在 1 0个气侯因素中 ,影响海南山蛭种群数量动态的主要气候因素是 X1,X5和 X10 。讨论了 7个气象因素与 1 0个气象因素对海南山蛭种群数量的影响情况。

The population number of Haemadipsa hainana has been investigated every month in rubber plantation of Hainan Island for eight years.The effect of ten climatic factors on population numbers of H.hainana has been studied by stepwise regression analysis method.The result shows that:1)population dynamic of H.hainana is different every year.The effects of the major climatic facors on population dynamics are X 1 (rainfall) X 3 (rainday) X 5 (showday) for eight years.2)the rainy season in Hainan Island is from May to October,in the season population number of H.hainana is greatly increased.The effects of major climatic factors on population dynamic are X 5 and X 10 (maximum wind speed).It is dry season from November to April,in which the population number is small,and the effect of major climatic facors on population dynamic is X 1 .3)In total 23 equation calculated in these eight years the important climatic factors of the ten variants (met) of the effect on population dynamic are X 1 , X 5 and X 10 .The result of seven climatic factors and ten climatic factors of the effect on population dynamic are discussed.