Palynological evidence for vegetation development and climatic change in the Sub-Himalayan Zone (Neogene, Central Nepal)
Palynological evidence for vegetation development and climatic change in the Sub-Himalayan Zone (Neogene, Central Nepal)
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DOI：
10.1016/s0031-0182(00)00149-8
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发表时间：
2000-11-15
影响因子：
3
通讯作者：
Quade, J
中科院分区：
文献类型：
--
作者：
Hoorn, C;Ohja, T;Quade, J
对尼泊尔中部Surai Khola的中新世-更新世沉积物进行的孢粉学研究提供了关于过去11.5 Ma以来植被和气候变化的新信息。结果表明，在中中新世晚期至晚中新世早期（11.5 ~ 8 Ma，Lower Siwalik），喜马拉雅山麓和尼泊尔恒河泛滥平原主要为亚热带至温带阔叶林（b.l.）分类群（例如栎属/锥属、赤杨属）和热带森林分类群。当时有草，但并不丰富。晚中新世早期至晚期（类似于8-类似于6.5Ma;中西瓦利克下部）草原取代亚热带和温带b.l.森林这种变化可能与植被的扰动斜坡上，由于隆起，也许加强了季风。晚中新世晚期至上新世/早更新世？（类似于6.5-
A palynological study on Miocene-Pleistocene sediments exposed at Surai Khola in central Nepal yields new information on vegetation and climate change over the last similar to 11.5 Ma. Our results show that during the late Middle Miocene to early Late Miocene (similar to 11.5-similar to8 Ma, Lower Siwalik) the Himalayan foothills and the Gangetic floodplain of Nepal were mainly forested with subtropical to temperate broad-leafed (b.l.) taxa (e.g. Quercus Lithocarpus/Castanopsis, Alnus), and tropical forest taxa respectively. Grasses were present at the time but were not abundant. Between the early to late Late Miocene (similar to8-similar to6.5 Ma; lower Middle Siwalik) grassland replaced subtropical and temperate b.l. forest. This change may be related to disturbance of the vegetation on the slopes due to uplift, perhaps enhanced by intensification of the monsoon. Between late Late Miocene to Pliocene/Early Pleistocene? (similar to6.5-