Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.geomorph.2003.09.001 |
Wind tunnel simulation of aeolian sandy soil erodibility under human disturbance | |
Li, XY; Liu, LY; Wang, JH![]() | |
通讯作者 | Li, XY |
会议名称 | Joint Meeting of the 5th International Conference on Aeolian Research/Global Change and Terrestrial Ecosystems-Soil Erosion Network |
会议日期 | JUL 22-25, 2002 |
会议地点 | LUBBOCK, TX |
英文摘要 | Inappropriate anthropogenic activities such as overcultivation and overgrazing of steppe and excessive collection of fuelwood are largely responsible for current desertification in China. However, quantitative information concerning the impacts of human disturbance on soil erosion remains sparse. This study investigated aeolian sandy soil erodibility under human disturbance by wind tunnel simulation. The fixed aeolian sandy soils were taken from an artificial vegetation protective system on mobile dunes at the southeastern edge of the Tengger Desert. The results indicate that: (1) human disturbance such as cultivation can accelerate the erodibility of the fixed aeolian sandy soil. The ratio between total soil loss from the undisturbed soil and the cultivated soil is about 0.004; (2) surface vegetation and microbiotic crust are the main factors responsible for the natural wind erodibility of the fixed sandy soil. Wind erosion rate increases with decreasing percent of the vegetation and crust cover; (3) the grain size distribution shows a higher percentage of particles in the range >1.0 mm and a lower percentage in the range <0.05 mm for the cultivated sandy soil than for the undisturbed fixed sandy soil. (C) 2003 Elsevier B.V. All rights reserved. |
英文关键词 | human disturbance aeolian sandy soil erodibility wind erosion |
来源出版物 | GEOMORPHOLOGY |
ISSN | 0169-555X |
EISSN | 1872-695X |
出版年 | 2004 |
卷号 | 59 |
期号 | 1-4 |
页码 | 3-11 |
出版者 | ELSEVIER SCIENCE BV |
类型 | Article;Proceedings Paper |
语种 | 英语 |
国家 | Peoples R China |
收录类别 | SCI-E ; CPCI-S |
WOS记录号 | WOS:000220456900002 |
WOS关键词 | STABILIZED DESERT DUNES ; WINDBLOWN SEDIMENT ; NORTHERN CHINA ; EROSION ; CRUSTS ; DESERTIFICATION ; VEGETATION ; PARTICLES |
WOS类目 | Geography, Physical ; Geosciences, Multidisciplinary |
WOS研究方向 | Physical Geography ; Geology |
资源类型 | 会议论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/294889 |
作者单位 | (1)Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Peoples R China;(2)Beijing Normal Univ, Key Lab Environm Change & Nat Disaster, Beijing 100875, Peoples R China;(3)Beijing Normal Univ, China Ctr Desert Res, Beijing 100875, Peoples R China;(4)Beijing Normal Univ, Inst Resources Sci, Beijing 100875, Peoples R China |
推荐引用方式 GB/T 7714 | Li, XY,Liu, LY,Wang, JH. Wind tunnel simulation of aeolian sandy soil erodibility under human disturbance[C]:ELSEVIER SCIENCE BV,2004:3-11. |
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