雷州半岛桉树无性系抗风性的研究

On July 23rd2003,Leizhou Peninsula was attacked by typhoon "IMBUDO",when the author investigated the capacity of wind ressitance of 27 Eucalyptus clones and different aged stands of E.urophylla U6,and E.ABL 12 W5 clones.Several methods including comparison,variance analysis,and regression analysis,were used to analyze the relationship between growth period,stand densitiy,direction,and the characteristics of Eucalyptus clones and wind-resistance.The results showed that the wind-resistance of Eucalyptus clones was closely correlated with the age,density,and direction of the stand.The difference of clones in tree height,DBH increment and timber density led to the significantly difference in wind-resistance.The following Ecualytpus clones with strong wind-resistance were selected:MJ41,MJ53,MJ57,MJ43,MJ45,W5,EC1,W6,W2,and ZU6.