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通过黑河上游不同地区的多条树轮年表及该区域降水量、气温和径流量的统计分析,探讨了黑河上游地区树木年轮与径流量的对应关系,重建了黑河上游地区自1450年以来径流量的变化,并进行了变化特征分析,结果表明:径流量的枯水年份稍高。统计得到13个丰水段,累计年份273年,约占总年数的50.6%,相应的枯水段12个,累计年份267年,约占总年数的49.4%,并发现降水量的变化趋势与径流量的变化趋势一致。径流量的中、短周期(45、39、34、3、2a)变化明显。
Through the statistical analysis of precipitation, air temperature and runoff of several tree rings in different areas of the upper reaches of the Heihe River, the relationship between tree rings and runoff in the upper reaches of Heihe River was discussed, and the upper reaches of the Heihe River have been reconstructed since 1450 The change of runoff and the change of characteristics were analyzed. The results showed that the dry season of runoff was slightly higher. According to the statistics, 13 abundant water sections were obtained, accounting for a total of 273 years, accounting for 50.6% of the total number of years and 12 corresponding dry sections, accounting for 267 years, accounting for 49.4% of the total. The trend of runoff is the same. Runoff in the short period (45,39,34,3,2 a) changes significantly.