| 史前黄土高原的自然植被景观──森林还是草原？ |
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| 引用本文：刘东生,郭正堂,吴乃琴,吕厚远.1994.史前黄土高原的自然植被景观──森林还是草原？[J].地球学报,15(3,4):226-234. |
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| 全文下载次数: 1901 |
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| 基金项目:国家自然科学基金和中国科学院地质研究所所长基金 |
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| 中文摘要:目前，黄土高原在人类垦伐以前的自然植被景观，仍是古环境研究中有争议的问题。本文对若干代表性地区的全新世土壤、植物硅酸体、有机碳同位素和孢粉组合进行了综合研究和分析，结果显示出，黄土高原全新世以草原植被为主。在中全新世的气候最适宜期，高原南部的关中地区是一种以草甸草原为主的森林草原景观，可能含有一定量的针叶树成分，而中部的洛川塬地区则是典型的草原景观。上述四方面的研究结果不支持全新世黄土高原源面上有茂盛森林植被的观点。 |
| 中文关键词:史前自然植被，黄土高原 |
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| Prehistoric Vegetation on the Loess Plateau:Steppe or Forest? |
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| Abstract:The paper aims to assess the Holocene natural vegetation on the Loess Plateau beforehuman reclamation,a contentious point in paleoenvironmental studies. Coordinated analyses onthe soils,phytolith assemblage,organic carbon isotope composition and pollen data fromselected sites suggest that the Holocene vegetation on the Loess Platca was dominated bysteppe. During the mid- Holocene corrresponding to the climatic optimum the southern-mostpart of the Plateau(Weinan and Xitan)was covered by an open meadow steppe with thepresence of some coniferous species,while the middlc part of the plateau(Luochuan)wascovered by steppe. Our results do not support the notion that dense forest cover was developedon the Loess Plateau during the Holocene. |
| keywords:Prehistoric vegetation Loess Plateau, |
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