【摘要】 以祁连山区青海云杉(Picea crassifolia)为样本,建立了青海云杉树木年轮宽度年表,应用相关分析和响应函数分析等年轮气候学方法,研究了青海云杉径向生长对气候变化的响应。结果表明:青海云杉年轮宽度与当年3-8月的平均气温呈正相关关系,特别是与3月平均气温的相关性最为显著(P<0.05);与当年3、5月的降水量呈显著的正相关关系(P<0.05);与当年4月日照时数呈显著的正相关关系。响应函数分析表明:青海云杉年轮宽度与上年10月和当年3、5月平均气温、上年12月和当年5、8月降水量、当年4、7月的日照时数存在显著的相关性(P<0.01)。综合来看,祁连山区青海云杉生长同时受春季温度、夏季降水和春季日照的影响明显。更多还原

【Abstract】 The tree-ring width of Picea crassifolia chronology was established as an sample of Picea crassifoliain Qilian mountain area.Application of climatology methods such as correlation analysis and response function analysis,the radial growth of P.crassifoliaresponse to climate change has studied.Results show that The annual ring width of P.crassifolia was positively correlated with the average temperature of Mar.and Aug.,and especially the mavcll average temperature with significantly positive correlation(P<0.05),the precipitation of the Mar.and May with significantly positive correlation(P<0.05),the Apr.sunshine time with significantly positive correlation.Response function analysis showed that there are significant correlation(P<0.01)of the tree ring width of P.crassifolia with average temperature last year Oct.and Mar.,May the same year,with precipitation of last Dec.and Mar.to Aug.the same year,sunshine time of Apr.to July the same year.Taken together,spring temperature and summer precipitation and spring sunshine effect is obvious to P.crassifoliagrowth in Qilian mountain area.更多还原