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根据江西大岗山地区4个采样点的马尾松年轮样本,建立了本地区的综合年轮年表,分析了马尾松径向生长与气候因子变化的相关及响应关系,发现大岗山地区树木径向生长受生长季7-9月降水量影响较显著,呈负相关关系。在响应分析的基础上,首次重建了大岗山地区1892年以来7-9月的降水量,交叉检验表明重建序列是可靠的。重建结果表明,大岗山地区7-9月份降水变化在过去的117a中总体经历了3个偏干时期:1895-1902年,1908-1926年和1944-1985年,和3个偏湿阶段:1903-1907年,1927-1943年及1986-2008年。重建的降水量序列在1921年,1937年及1977年发生明显的方差突变,表明百年以来该地区降水量变化趋势存在阶段性变化。
According to the sample of Pinus massoniana from 4 sampling sites in Dagangshan, Jiangxi Province, a comprehensive annual ring table was established to analyze the correlation and response relationship between the radial growth of Pinus massoniana and climatic factors. It was found that the Dagangshan area The radial growth of trees was affected more significantly by the precipitation during July to September of the growing season, showing a negative correlation. Based on the response analysis, the precipitation in the Dagangshan area was reconstructed for the first time from July to September in the Dagangshan area. The cross-test shows that the reconstruction sequence is reliable. The reconstructed results show that the precipitation changes in Dagangshan from July to September in the past 117 years generally experienced three dry periods: 1895-1902, 1908-1926 and 1944-1985, and three partial wet stages: 1903-1907, 1927-1943 and 1986-2008. The reconstructed precipitation series experienced obvious variance mutation in 1921, 1937 and 1977, indicating that the trend of precipitation in this area changed periodically in the past 100 years.