Climatic reconstruction at the Miocene Shanwang basin, China, using leaf margin analysis, CLAMP, coexistence approach, and overlapping distribution analysis.
Climatic reconstruction at the Miocene Shanwang basin, China, using leaf margin analysis, CLAMP, coexistence approach, and overlapping distribution analysis.
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DOI：
10.3732/ajb.94.4.599
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发表时间：
2007-04
影响因子：
3
通讯作者：
Jian Yang;Yu-Fei Wang;R. Spicer;V. Mosbrugger;Cheng-Sen Li;Qi-Gao Sun
中科院分区：
文献类型：
--
作者：
Jian Yang;Yu-Fei Wang;R. Spicer;V. Mosbrugger;Cheng-Sen Li;Qi-Gao Sun
中新世山旺盆地气候重建是认识东亚地区过去气候与环境变化的重要环节。最近的一项研究表明，由叶缘分析(LMA)和气候叶分析多变量程序(CLAP)得到的年平均温度(MAT)估计与共存方法(CA)估计的结果相冲突，并且明显低于共存方法(CA)。本文介绍了一种新的气候重建方法--重叠分布分析(ODA)，它是根据当地植物分布资料和相关气象站资料重建山旺中新世气候的。山旺植物群(17-15.2 Ma)反映了10.9-14.5℃的气候，年平均降水量为1107.3-1880.0 mm。这一结果比CA法得到的结果更接近CLAMP和LMA法得出的值。这份报告是第一次在中国背景下对叶外貌和最接近生存的相对气候指标进行全面的相互比较，并提供了重要的交叉验证结果。
The reconstruction of the climate in the Miocene Shanwang basin is an important link in understanding past climate and environmental changes in East Asia. A recent study showed that the mean annual temperature (MAT) estimates derived from leaf margin analysis (LMA) and the Climate Leaf Analysis Multivariate Program (CLAMP) conflicted with and were remarkably lower than those estimated by the coexistence approach (CA). Overlapping distribution analysis (ODA), a new method introduced here, is used to reconstruct the Shanwang Miocene climate based explicitly on local plant distribution data and associated meteorological stations. The Shanwang flora (17-15.2 Ma) suggests a MAT of 10.9-14.5°C and a mean annual precipitation (MAP) of 1107.3-1880.0 mm. This result is closer to the values derived from CLAMP and LMA than that obtained by CA. This report is the first comprehensive intercomparison of foliar physiognomic and nearest living relative climate proxies in a Chinese context and provides important cross validation of results.