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利用从中国天目山和庐山采集的 4株树轮样 ,分析了树轮沿不同方位δ1 3C的变化特点 ,讨论了角分布的成因。结果表明 ,树轮在不同方位上的木质α 纤维素δ1 3C值不同 ,而且各方位上δ1 3C的差异与分析期间历年平均值的年际差异在量级上大致相当。对各方位δ1 3C作方差分析表明 ,各方位存在显著性差异 ,说明δ1 3C的角分布具有独立意义。对其中一棵柳杉树轮δ1 3C角分布与气候要素的相关分析表明 ,不同方位的δ1 3C值与年、季节和月降水及温度相关 ,从而使树轮可记录信息分辨率提高、信息量增大。用树轮δ1 3C的角分布重建的气候要素更能反映气候要素的实际变化情况
Based on the analysis of four tree rotation patterns collected from Tianmu Mountain and Lushan Mountain in China, the variations of tree rings along δ1 3C in different directions were analyzed and the causes of angular distribution were discussed. The results showed that the δ13C value of woody cellulose was different in different azimuths, and the difference of δ1C3 in each azimuth was approximately the same as that of the historical average over the analysis period. An analysis of variance on δ1 3C for each azimuth indicates that there is a significant difference between the azimuths, indicating that the angular distribution of δ1 3C has an independent meaning. Correlation analysis of δ13C angle distribution and climatic elements of one Cryptomeria fortunei tree circle shows that δ1 3C values of different azimuths are related to annual, seasonal and monthly precipitation and temperature, so that the resolution of tree-recordable information is improved. The information amount Increase. The climatic elements reconstructed from the angular distribution of δ13C tree tree reflect the actual changes of climatic elements