Climatic and ecological implications of Late Pliocene palynoflora from Longling, Yunnan, China
Climatic and ecological implications of Late Pliocene palynoflora from Longling, Yunnan, China
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DOI：
10.1016/s1040-6182(03)00119-8
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发表时间：
2004-01-01
影响因子：
2.2
通讯作者：
Du, NQ
中科院分区：
文献类型：
--
作者：
Xu, JX;Ferguson, DK;Du, NQ
龙岭煤矿（滇西）地处大地构造活动剧烈的地区。它的晚上新世孢粉植物是相当有趣的，因为该地区代表了生物多样性的中心。从褐煤中发现了61科82种异形。孢粉植物以被子植物（68.3%）为主，其次为蕨类（24.4%）、裸子植物（4.9%）和藻类（2.4%）。结果表明，山地湿润常绿阔叶林对孢粉植物区系的贡献最大，杉木阔叶林和常绿针叶阔叶混交林以及山地藓类常绿阔叶林的贡献较小。这表明晚上新世的气候比现在更冷。在褐煤积累过程中，气候经历了增温和降温五个主要阶段。(C) 2003 Elsevier Ltd和INQUA。版权所有。
The Longling Coal Mine (W. Yunnan) is situated in an area of substantial geotectonic activity. Its Late Pliocene palynollora is of considerable interest, since the area represents a centre of biodiversity. Eighty-two palynomorphs belonging to 61 families were recovered from the lignite. The palynoflora is dominated by angiosperms (68.3%), with ferns (24.4%), gymnosperms (4.9%) and algae (2.4%). Comparisons indicate that most of the palynoflora was derived from the Montane Humid Evergreen Broad-leaved Forest, with lesser contributions from the Tsuga dumosa Forest and Evergreen Coniferous Broad-leaved Mixed Forest, as well as the Montane Mossy Evergreen Broad-leaved Forest. This indicates that the Late Pliocene climate was cooler than that of the present. In the course of the accumulation of the lignite, the climate underwent five major phases of warming and cooling. (C) 2003 Elsevier Ltd and INQUA. All rights reserved.