[1]徐树建,潘保田,胡春生,等.香山北麓末次冰期风成沉积物粒度的空间变化研究[J].水土保持研究,2006,13(02):4-6,74.
　XU Shu-jian,PAN Bao-tian,HU Chun-sheng,et al.Study on Grain-size of the Aeolian Sediments in the Northern Fringe of Xiangshan Mountain During the Last Glacial[J].Research of Soil and Water Conservation,2006,13(02):4-6,74.
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香山北麓末次冰期风成沉积物粒度的空间变化研究

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 13 期数: 2006年02期 页码: 4-6,74 栏目: 出版日期: 1900-01-01
Title:
Study on Grain-size of the Aeolian Sediments in the Northern Fringe of Xiangshan Mountain During the Last Glacial
作者:
徐树建1,2, 潘保田1, 胡春生1, 高红山1
1. 兰州大学资源环境学院西部环境教育部重点实验室, 兰州 730000;
2. 临沂师范学院地理与旅游学院, 山东临沂 276005
Author(s):
XU Shu-jian1,2, PAN Bao-tian1, HU Chun-sheng1, GAO Hong-shan1
1. College of Resources and Environment, Lanzhou University, National Laboratory of Western China’s Environmental System, Lanzhou 730000, China;
2. College of Geography and Tourism, Linyi Teachers University, Linyi, Shandong 276005, China
关键词:
粒度; 黄土; 风成沉积; 香山北麓
Keywords:
grain size; loess; aeolian sediments; the Northern fringe of Xiangshan Mountain
分类号:
P532
摘要:
黄土的粒度被广泛地用作气候变化特别是冬季风强度变化和沙漠范围变迁的替代性指标。对宁夏中部陇西黄土高原北缘的香山北麓从北向南的七个样点末次冰期以来风成堆积物粒度的系统分析表明，在末次冰期中，影响沉积物粒度的因素主要是距离源区的远近和海拔高度，而风力强度基本相似，后期风化作用较小，可以忽视。随着距离现代沙漠南缘距离的增加和海拔高度的增加，沉积物的粒度都会相应减小。通过数学统计处理后的结果显示，在较小的空间范围内，海拔高度的影响比源区距离更重要。
Abstract:
Grain size is the most fundamental property of sediment particles, affecting their entrainment, transport and deposition. The aeolian sand and dust has been taken as an important proxy of expansion and contraction of the desert during geological period. The signals of the desert evolution were well preserved in the aeolian deposits on the margin of the desert, which are effective to reconstruct the desert expansion and contraction. According to the dominant wind direction, generally NW-SE, the authors systematically studied 7 sections of Malan loess in the Northern fringe of Xiangshan Mountain during the Last Glacial period. Detailed granular analyses show the properties of temporal and spatial of the Malan loess, and reducing of the percentage of the sand from northwest to southeast. The study indicates a new linear correlation model of sand percentage with altitude and distance, and the altitude has a more influence to the sand fraction.

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备注/Memo

收稿日期:2005-5-21;改回日期:。
基金项目:国家重点基础研究发展规划项目“青藏高原各圈层相互作用综合研究”（G1998040811）；国家自然科学基金（4017101040471016，40401007）；教育部重点项目（2003070017）资助
作者简介:徐树建（1967- ），男，山东临沂人，临沂师范学院副教授，博士研究生，主要从事风成沉积物粒度与第四纪环境变化研究。

更新日期/Last Update: 1900-01-01