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首页> 外文期刊>Journal of Asian earth sciences >Miocene woods from the Qaidam Basin on northern Qinghai-Tibet Plateau with implications for paleoenvironmental change
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Miocene woods from the Qaidam Basin on northern Qinghai-Tibet Plateau with implications for paleoenvironmental change

机译：青藏高原北部柴达木盆地中新世木材及其对古环境变化的影响

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摘要

The Qaidam Basin with the most complete Cenozoic sedimentary preservation in northern Qinghai-Tibet Plateau is a key area for studying uplift and environmental change of the plateau. Three types of woods, Ulmus (Ulmaceae), Leguminosae (?) (angiosperm) and Cupressaceae (gymnosperm) were recognized from the large-scale preservation of fossil woods in late Miocene Shang Youshashan Formation in northern Qaidam Basin on the Qinghai-Tibet Plateau. Both investigations of their Nearest Living Relatives (NLRs) and previous grassland mammal evidences suggest that there have been temperate deciduous broad-leaved forest and needle-leaved forest with grass in northern Qaidam Basin during the late Miocene in contrast to the desert vegetation found there nowadays. The presence of the ancient forest steppe further implies that the southern part of the plateau used to be adequately low, so that the Indian and East Asian monsoons could approach the northern area and to accommodate the vegetation in late Miocene. (C) 2015 Elsevier Ltd. All rights reserved.
机译：青藏高原北部新生代沉积保存最完整的柴达木盆地是研究高原隆升和环境变化的重点地区。从青藏高原北部柴达木盆地中新世尚尤沙山组晚期中新世大型化石木材的保存中，可以识别出三种类型的木材，即榆木（榆科），豆科（？）（裸子植物）和柏科（裸子植物）。对他们最近的亲戚的调查和先前的草原哺乳动物的证据都表明，中新世晚期，柴达木盆地北部有温带落叶阔叶林和针叶林，草丛与如今的沙漠植被形成对比。 。古代森林草原的存在进一步暗示高原的南部曾经足够低，因此印度和东亚季风可以接近北部地区并容纳中新世晚期的植被。 （C）2015 Elsevier Ltd.保留所有权利。

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