摘要
对新疆托木尔峰地区松树年轮样品的ESR研究表明,其自由基浓度N_g是树木生长速率的指示,它与季节有关。春材的N_g值普遍高于秋材,与气温、降雨量有关,但不是一一对应的关系。年轮的N_g明显地受太阳黑子活动周的影响,随着太阳周而变化,只是峰谷和峰值年要前移或后推1—2年。
Samples of pine tree ring from Mt. Tuomuer region of Xinjiang province were researched using ESR method. The result shows that the free radical concentration Ng is an index of tree growth and relates to the season, and to the temperature and the precipitation. The Ng of spring wood is more than that of autumn. The Ng of wood was prominently influenced by the period of sunspot activity and it varies with the solar period, but the values of peak and valley have been preacted 2-3 years or postponed.
出处
《波谱学杂志》
CAS
CSCD
1990年第2期201-204,共4页
Chinese Journal of Magnetic Resonance
基金
国家自然科学基金
