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作 者 ：刑秋茹,刘鸿雁,孙艳荣,崔海亭,戴君虎,李平日,谭惠忠

期 刊 ：生态学报 2004年 24卷 9期 页码：2077~2080

关键词：树木年轮；过渡热带；香樟(Cinnamonum；camphora)；气候变化；厄尔尼诺；

Keywords:tree ring, transitional tropical zone, Cinnamonum camphora, Climatic change, El Nino,

摘 要 ：树木年轮方法定年准确、连续性强、分辨率高和易于获取复本等 ,成为全球气候变化研究的重要手段之一。在热带、亚热带地区 ,受树木生理特性的影响 ,树轮研究工作开展较少。通过广东阳春过渡热带现代樟树树木年轮宽度的变化 ,发现秋季降水是影响研究区樟树生长的重要因子。树轮记录的准 4～ 4 .92 a周期的树轮指数变化可能与厄尔尼诺的周期有关 ,即厄尔尼诺引起气候变化对树木生长产生影响。尽管樟树生长快 ,树轮不清晰 ,交叉定年困难 ,但由于研究区存在明显的旱季 ,樟树树轮仍然能够在一定程度上反映气候条件的影响。

Abstract:Dendroclimatological approach is significant in global climatic changes for its precise dating, high continuity, high resolution and easily obtained duplicates. Only a few dendroclimatological works have been conducted in tropical and subtropical zone due to relative low seasonality there. Yangchun in Guangdong province was selected for the study area of this paper. It is located at the transitional zone between southern subtropical zone to northern tropical zone climatically. Strongly affected by the tropi...

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