The Characteristics and Distribution of the Source Area of Aeolian Sand in the Valley Lhasa River's Lower Reaches, Tibet, China
文献类型：会议论文
| 作者 | Chang Chunping2,3; Zou Xueyong1,3; Zhang Chunlai1; Huang Yongmei1 |
| 出版日期 | 2006 |
| 会议日期 | JUL 31-AUG 04, 2006 |
| 会议地点 | Denver |
| 关键词 | Valley of lower reaches of Lhasa River Sand source |
| DOI | 10.1109/IGARSS.2006.791 |
| 页码 | 3065-3068 |
| 国家 | CO |
| 英文摘要 | Based on IKONOS and Quickbird interpretation and field survey, the effects of human activities and characteristic of sand distribution, grain diameter of sand sources and vegetation in the valley of lower reaches of Lhasa River were discussed. The results indicate that valley sand sources distribute along river valley and its two sides, in patch and particle form from slope to bottom of valley, and have a close interrelation with large, medium and small scale of wind field in space; There are three categories of accumulation substances which are sources of sand in the lower reaches of Lhasa River valley: river alluvium, flood deposit and weathering substances of mountain rock. Among them, river alluvium is the most important sand source, grain diameter of sand source is mainly made of silver sand, extreme silver sand and sticky sand, over 90% of whose grain size is less than 0.15mm, and tends to produce wind erosion. Aeolian sand activity is the primary factor affecting sand-nurtured vegetation, especially on movable and semi-movable land is affected most seriously, the species and coverage of vegetation can well reflect the stability of sand sources. Vegetation succession is developing in the tendency in favor of aeolian sand activities, which is one of a main driving factor and outcome of worsening aeolian sand activities. Natural factors are the main cause of the aeolian sand activities in this region, and human activities will further strengthen aeolian sand activities. |
| 产权排序 | 1 |
| 会议录 | 2006 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM, VOLS 1-8
 |
| 会议录出版者 | IEEE |
| 会议录出版地 | NEW YORK |
| 语种 | 英语 |
| ISSN号 | 2153-6996 |
| ISBN号 | 978-0-7803-9509-1 |
| WOS记录号 | WOS:000260989401383 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/33542]  |
| 专题 | 成都山地灾害与环境研究所_成都山地所知识仓储（2009年以前） |
| 通讯作者 | Chang Chunping |
| 作者单位 | 1.College of Resource Science and Technology, Beijing Normal University, Beijing 100875; 2.College of Resources and Environment Sciences, Hebei Normal University, Shijiazhuang 050016 3.Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041; |
| 推荐引用方式 GB/T 7714 | Chang Chunping,Zou Xueyong,Zhang Chunlai,et al. The Characteristics and Distribution of the Source Area of Aeolian Sand in the Valley Lhasa River's Lower Reaches, Tibet, China[C]. 见:. Denver. JUL 31-AUG 04, 2006. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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