| 青藏高原东北部典型花粉类型埋藏特征及其与植被关系的研究 |
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| 引用本文： | 许清海,李月丛,阳小兰,陈辉,吕新苗.青藏高原东北部典型花粉类型埋藏特征及其与植被关系的研究[J].地球科学进展,2005,20(1):89-098. |
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| 作者姓名： | 许清海 李月丛 阳小兰 陈辉 吕新苗 |
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| 作者单位： | 1.河北省师范大学资源与环境学院，河北 石家庄 050016；
2.中国科学院地质与地球物理研究所，北京 100029；
3.河北省地理科学研究所，河北 石家庄 050011；
4.中国科学院地理科学与资源研究所，北京100101 |
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| 基金项目： | 国家自然科学基金项目“中国北方主要生态类型孢粉组合特征研究”（编号：40171095）；国家科技部重大基础研究前期研究专项“中国北方季风气候区不同植被带花粉通量与气候关系的研究”（编号：2003CCA01800）；河北省自然科学基金项目“河北省主要生态类型花粉组合特征研究”（编号：402615）；国家重点基础研究发展规划项目“青藏高原形成演化及其环境、资源效应”（编号：G1998040800）资助. |
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| 摘 要： | 取自青藏高原东北部不同植被类型的 6个土壤剖面花粉与植被关系研究表明，表土花粉较好地代表当地植被的组成，区域外花粉百分比低于30％，但桦、杨花粉在植被中的代表性较差；土壤剖面典型花粉类型的埋藏特征表明：在土壤表层 8cm以下，花粉总浓度迅速降低。氧化作用对花粉的破坏性最大，花粉浓度随土壤的pH值升高呈指数形式递减，pH值 7．6以上，花粉浓度迅速降低，花粉在土壤中的运移作用不明显。
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| 关 键 词： | 青藏高原东北部土壤剖面 pH值 花粉保存 花粉运移 |
| 收稿时间： | 2003-09-09 |
| 修稿时间： | 2004-03-17 |
A Study of Some Typical Pollen Types Taphonomy and Relationships With Vegetation in the Northeast of Qinghai-Tibet Plateau |
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| XU Qinghai,LI Yuecong,YANG Xiaolan,CHEN Hui,Lü,Xinmiao.A Study of Some Typical Pollen Types Taphonomy and Relationships With Vegetation in the Northeast of Qinghai-Tibet Plateau[J].Advance in Earth Sciences,2005,20(1):89-098. |
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| Authors: | XU Qinghai LI Yuecong YANG Xiaolan CHEN Hui Lü Xinmiao |
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| Institution: | 1. College of Resources and environment, Hebei Normal University, Shijiazhuang 050016, China；;
2. Institute of Geology and Geophysics, the Chinese Academy of Sciences, Beijing 100029,China；;
3. Hebei Institute of Geography, Shijiazhuang 050011, China；;
4. Institute of Geography and Resources, the Chinese Academy of Sciences, Beijing 100101, China |
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| Abstract: | A study of six soil pollen profiles from different vegetation types in the northeast of Qinghai Tibet Plateau shows that surface pollen assemblages can reflect the local plant communities well, and extra region pollen percentages are less than 30%. However the surface pollen assemblages in Betula and Populus forest do not coincide with local vegetation. The loss of Betula pollen in forest needs further investigation. The taphonomy of typical pollen taxa shows：under 8cm of soil surface, total pollen concentrations decrease quickly. Pollen oxidation is serious in the study area. Pollen concentrations decrease by the means of exponent with the increasing of pH values of soil, and decrease sharply as the pH is over 7.6. No obvious pollen downward movement occurred in soil. |
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| Keywords: | Northeast of Qinghai-Tibet Plateau Soil profiles pH values Pollen preservation Pollen movement |
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