| 沙质草原槽形风蚀坑表面沉积物粒度特征 |
| |
| 引用本文： | 王帅,哈斯.沙质草原槽形风蚀坑表面沉积物粒度特征[J].水土保持通报,2008,28(6):122-125. |
| |
| 作者姓名： | 王帅 哈斯 |
| |
| 作者单位： | [1]浙江省水利河口研究院,浙江杭州310020 [2]北京师范大学资源学院地表过程与资源生态国家重点实验室,北京100875 |
| |
| 基金项目： | 国家自然科学基金“沙丘风蚀坑形态动力学研究”(40471013) |
| |
| 摘 要： | 通过对呼伦贝尔沙质草原槽形风蚀坑表面沉积物粒度的观测分析，发现活跃发展时期的槽形风蚀坑沙物质总体结构以中沙为主，其次是细砂，粗砂和粉沙含量很少，且不含砾石。由于沙源沉积物粒度组成比较均一，风蚀坑各部位粒径频率曲线均呈单峰对称（或近对称）。响应于风力侵蚀和堆积，在粒度诸参数中，粗沙和细沙含量，频率曲线众数粒径，以及平均粒径等发生了明显的变化。该研究结果作为表面气流的响应，支持了先前提出的槽形风蚀坑动力学过程。
|
| 关 键 词： | 沙质草原 槽形风蚀坑 沉积物 粒度 |
| 收稿时间： | 3/9/2008 12:00:00 AM |
| 修稿时间： | 8/5/2008 12:00:00 AM |
Particle Size Variation in Trough Blowout on Sandy Grassland |
| |
| WANG Shuai and Hasi Eerdun.Particle Size Variation in Trough Blowout on Sandy Grassland[J].Bulletin of Soil and Water Conservation,2008,28(6):122-125. |
| |
| Authors: | WANG Shuai and Hasi Eerdun |
| |
| Institution: | Zhejiang Institute of Hydraulics and Estuary,Hangzhou,Zhejiang 310020,China;College of Resources Science and Technology,and State Key Laboratory of Earth Surface Processes and Resource Ecology,Beijing Normal University,Beijing 100875,China;College of Resources Science and Technology,and State Key Laboratory of Earth Surface Processes and Resource Ecology,Beijing Normal University,Beijing 100875,China |
| |
| Abstract: | Sediment samples collected in blowouts were analyzed.Results indicate that particle size and sorting parameters vary systematically with blowout position.Sediment in a trough blowout is mainly composed of medium and fine sand,with less coarse sand and silt.No gravel is observed in the trough blowout.Because of relatively uniform composition of sediment particles,frequency curve varying with different depths of the trough blowout show the single peak symmetry.In response to wind erosion and accumulation,the ... |
| |
| Keywords: | sandy grassland trough blowouts sediments particle size variation |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《水土保持通报》浏览原始摘要信息 |
| 点击此处可从《水土保持通报》下载免费的PDF全文 |
