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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。
Taking the Picea crassifolia in the Qilian Mountains as a sample, the chronology of the annual ring width of the spruce trees in Qinghai was established. The relationship between the radial growth of Picea crassifolia and the climate change was studied by means of correlation analysis and response function analysis. the response to. The results showed that the annual ring width of Picea crassifolia had a positive correlation with the average temperature in March-August, especially the correlation with the average temperature in March (P <0.05), and the precipitation in March and May of that year was Significant positive correlation (P <0.05), and had a significant positive correlation with sunshine hours in April of that year. Response function analysis showed that the width of annual rings of Picea crassifolia was significantly different from the average temperature in March and May of last year and the current year of March and May, the precipitation in December of last year and May and August of that year, and the sunshine hours in April and July of that year Correlation (P <0.01). Taken together, the Qilian Mountains Qinghai spruce growth at the same time by the spring temperature, summer rainfall and spring sunshine significantly.