自 1863 年以来,中国中部伏牛山芒松树环宽度记录的 5-6 月相对湿度变化

IF 1.9 3区 地球科学 Q3 GEOGRAPHY, PHYSICAL
Jinkuan Li , Kunyu Peng , Xiaoxu Wei , Yameng Liu , Jiaxin Li , Meng Peng , Xuan Li , Keyu Zhang , Jianfeng Peng
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引用次数: 0

摘要

持久的干旱记录可以为了解华中地区水文气候变化的历史提供宝贵的资料,但气象记录太短,无法捕捉湿度的长期变化。在这项研究中,我们建立了华中伏牛山区弗朗奇树环宽度年表。相关分析表明,树木的径向生长主要受 5-6 月热液组合的限制。移动相关分析结果进一步表明,树木生长与 5-6 月相对湿度(RH)之间的响应关系最为稳定。这一关系自 1863 年以来一直被重建。重建相对湿度的方差解释率为 41.7%(调整自由度后为 40.6%)。在过去的 158 年中,有 3 个湿润期和 4 个干燥期。频谱分析表明,重建的相对湿度呈现出 2-4a 和 31.6a 的准周期,交叉频谱分析表明,重建的相对湿度可能与厄尔尼诺/南方涛动、PDO、太阳活动和东亚夏季季风有关。空间相关性分析表明,重建的相对湿度准确地描述了黄河-淮河平原湿度的波动。此外,重建的相对湿度与北太平洋副热带海面温度(SST)呈较强的负相关,而与赤道东太平洋上年 5 月至今年 4 月的 SST 呈极显著的正相关。这也表明黄河淮河平原的湿度波动与太平洋气候系统内部变率之间可能存在联系。因此,该研究旨在扩展和补充现有气象记录,为森林管理、农业和畜牧业提供重要的参考意义。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
May–June relative humidity variation recorded by tree ring widths of Pinus armandii Franch since 1863 in the Funiu Mountains, central China

Long-lasting drought records can provide valuable insights into the history of hydroclimate change in central China, but meteorological records are too short to capture long-term variability of the humidity. In this study, we established a tree-ring width chronology of Pinus armandii Franch in the Funiu Mountains region of central China. Correlation analyses showed that tree radial growths were mainly limited by hydrothermal combination in May–June. The results of the moving correlation analysis further showed that the response relationship between tree growth and relative humidity in May–June (RHMJ) was the most stable. This relationship has been reconstructed since 1863. The variance of the reconstructed RHMJ was explained by 41.7% (40.6% after adjusting for degrees of freedom). Over the past 158 years, there were 3 wet periods and 4 dry periods. The spectral analysis revealed that the reconstructed RHMJ exhibited quasi-periods of 2-4a and 31.6a, and cross-spectrum analysis showed that the reconstructed RHMJ may be related to ENSO, PDO, solar activity and the East Asian summer monsoon. The spatial correlation analysis revealed that the reconstructed RHMJ accurately depicted the fluctuations in humidity within the Huanghe-Huaihe Plain. Furthermore, the reconstructed RHMJ exhibited a strong negative correlation with the sea surface temperature (SST) of the subtropical North Pacific, while it displayed a highly significant positive correlation with the SST of the eastern equatorial Pacific from the previous May to the current April. This also indicated a possible link between humidity fluctuations in the Huanghe-Huaihe Plain and the Pacific internal variability in climate system. Therefore, this research aims to expand and complement the existing meteorological records, providing important reference significance for forest management, agriculture, and animal husbandry.

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来源期刊
Quaternary International
Quaternary International 地学-地球科学综合
CiteScore
5.60
自引率
4.50%
发文量
336
审稿时长
3 months
期刊介绍: Quaternary International is the official journal of the International Union for Quaternary Research. The objectives are to publish a high quality scientific journal under the auspices of the premier Quaternary association that reflects the interdisciplinary nature of INQUA and records recent advances in Quaternary science that appeal to a wide audience. This series will encompass all the full spectrum of the physical and natural sciences that are commonly employed in solving Quaternary problems. The policy is to publish peer refereed collected research papers from symposia, workshops and meetings sponsored by INQUA. In addition, other organizations may request publication of their collected works pertaining to the Quaternary.
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