| 树轮气候学中树木年轮密度分析方法的研究进展 |
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| 引用本文： | 魏本勇,方修琦.树轮气候学中树木年轮密度分析方法的研究进展[J].古地理学报,2008,10(2):193-202. |
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| 作者姓名： | 魏本勇 方修琦 |
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| 作者单位： | 1.北京师范大学地理学与遥感科学学院 北京100875;2.中国科学院地理科学与资源研究所 北京100101 |
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| 摘 要： | 树木年轮密度（树轮密度）分析作为树轮气候学的一种研究方法，能够提取更准确的环境信息，应用范围更广，在过去环境变化研究中受到越来越广泛的重视。讨论了树轮密度测量技术与树轮密度分析方法在过去气候变化研究中的发展历程及最新研究成果，认为X射线分析法仍然是目前被广泛采用的树轮密度分析手段，基于树轮密度数据的过去温度变化重建仍是树轮密度研究的主要方向。相关研究表明：森林上限和高纬度地区树木年轮的最大晚材密度对夏季温度变化非常敏感，可以用来重建过去几百年、乃至千年的不同空间尺度的温度变化；树轮早材密度或最小早材密度对降水量的响应比较显著，但目前主要集中于重建区域小尺度的降水量变化方面。另外，树轮密度分析结果还可以用来研究某些气候要素分量的变化（季节变化、气候事件爆发的早晚和持续时间等）、区域气候变化的影响因子以及海气动力机制、气压异常等。
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| 关 键 词： | 树轮气候学 树木年轮密度 气候变化 |
| 文章编号： | 1671-1505(2008)02-0193-01 |
| 修稿时间： | 2007年10月23 |
Advances on the methodology of tree ring density analysis in Dendroclimatology |
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| Wei Benyong,Fang Xiuqi.Advances on the methodology of tree ring density analysis in Dendroclimatology[J].Journal of Palaeogeography,2008,10(2):193-202. |
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| Authors: | Wei Benyong Fang Xiuqi |
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| Institution: | 1.School of Geography，Beijing Normal University，Beijing100875;2.Institute of Geographic Sciences and Natural Resources Research，Chinese Academy of Sciences，Beijing100101 |
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| Abstract: | Due to the more exact environment information it can provide,and its wider application fields,tree ring density analysis,as one of the research methods in Dendroclimatology,has received more and more important attention in environment researches.By analyzing the development process and the new research results of tree ring density measurement technology and tree ring density analysis in the past climate change studies,it is considered that the X-ray analysis method is the widely used current measure.The reconstruction of past temperature change based on the tree ring density data is still the main direction of tree ring density researches.Relevant research results indicate that the maximum latewood density of trees in the forest upper limit in the high latitude area are very sensitive to the summer temperature change and thus can be used in the reconstruction of temperature change with several hundreds to thousands of years time scale and different space scales.The earlywood density or the minimum earlywood density has more obvious response to the precipitation and now is mainly used in the reconstruction of regional precipitation change with small scales.Otherwise,the research results of tree ring density analysis can be used in the studies of the change of climate factors which include the season change,the timing and duration of climate events,influencing factors of regional climate change,dynamic mechanism and abnormal air pressure. |
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| Keywords: | Dendroclimatology tree ring density climate change |
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