| 全新世东北平原森林-草原生态过渡带的迁移 |
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| 引用本文： | 任国玉. 全新世东北平原森林-草原生态过渡带的迁移[J]. 生态学报, 1998, 18(1): 33-37 |
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| 作者姓名： | 任国玉 |
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| 作者单位： | 国家气候中心,北京,100081 |
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| 基金项目： | 国家攀登计划27－1课题 |
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| 摘 要： | 根据先前完成的化石花粉分布图，对我国东北权辽平源过去１万ａ森林－草原生态过渡带的摆动历史进行了重建。这项研究表明，在没在人类活动干扰的条件下，松辽平原森林－草原生态过渡带最偏西的时间既不在早全新世，也不在中全新世，而是在晚全新世；在过去的１万ａ内，森林－草原生态过渡带的最大摆动幅度不超过１５０ｋｍ，其最偏西时的位置距离现代位置约为１００ｋｍ。因此，东北松辽平原的主体部分在全新世中始终是草原，没有发
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| 关 键 词： | 东北平原 全新世 古植被 生态过渡带 |
| 收稿时间： | 1996-02-25 |
| 修稿时间： | 1997-02-08 |
MIGRATION OF THE FORESTS-STEPPE ECOTONE DURING THE HOLOCENE PERIOD IN NORTHEAST CHINA |
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| REN Guoyu. MIGRATION OF THE FORESTS-STEPPE ECOTONE DURING THE HOLOCENE PERIOD IN NORTHEAST CHINA[J]. Acta Ecologica Sinica, 1998, 18(1): 33-37 |
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| Authors: | REN Guoyu |
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| Affiliation: | National Climate Center; Beijing; China |
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| Abstract: | On the basis of mapped summary of pollen data by the present author,an attempt is made to reconstruct the positions of the forest steppe ecotone in the Northeast China Plain for the different times of the Holocene.By correlating the modern tree pollen percentages with the present vegetation distribution,it seems reasonable to consider 40%isopoll for arboreal as an indicator for the position of the forest steppe ecotone.This isopoll thus could be used to reconstruct the evolution history of the ecotone.On t... |
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