Wind erodibility of major soils in the farming-pastoral ecotone of China
文献类型：期刊论文
| 作者 | Liu, L. -Y.; Li, X. -Y.; Shi, P. -J.; Gao, S. -Y.; Wang, J. -H.; Ta, W. -Q.; Song, Y.; Liu, M. -X.; Wang, Z.; Xiao, B. -L. |
| 刊名 | JOURNAL OF ARID ENVIRONMENTS
 |
| 出版日期 | 2007-03-01 |
| 卷号 | 68期号:4页码:611-623 |
| 关键词 | wind erosion soil loss undisturbed soil cultivation wind tunnel |
| ISSN号 | 0140-1963 |
| DOI | 10.1016/j.jaridenv.2006.08.011 |
| 通讯作者 | Li, X. -Y.(xyli@ires.cn) |
| 英文摘要 | Wind erosion and desertification are severe problems in China's farming-pastoral ecotone. In this Study, wind erodibility of five major soils in both Uncultivated and simulated Cultivated conditions, were determined through wind tunnel tests at nine wind speeds ranging from 10 to 26ms(-1). The average wind erosion rate (g m(-2) min(-1)) Under the Uncultivated condition (q(0)) for the five soils could be set in the order chestnut soil (28.5)> brown soil (24.8)> sicrozern (21.8)> chernozem (19.9) > fixed sandy soil (11.4). The highest natural wind erosion might take place in the semi-arid steppe zone where the Chestnut soils predominiate. Cultivation can significantly accelerate wind erosion, the mean wind erosion rate under the cultivated condition (q(c)) for all five soils was 743.7 g m(-2) min(-1) in the following order: sandy soil (3313.2) > brown soil (227.2) > chernozem (221.8) > sierozeni (85.1) > chestnut Soil (81.2). For both file uncultivated and Cultivated soil samples, the relationship between wind erosion rate (q) and wind speed (U) Could be expressed in general as q = Ae(BU), (A and B are constant coefficients). There was I critical wind speed for each soil type except for the sandy soil. Below the critical wind speed, cultivation reduced wind erosion rate possibly due to soil clodiness and roughness effects. Above the critical speed, cultivation greatly intensified wind erosion rates Clue to the break down of the original soil structure. The critical wind speed Measured at 20cm above the soil surface was 20ms(-1) for the brown soil, 14ms(-1) for chernozem and the chestnut soils, and 10ms(-1) for the sierozem. Among the five tested soils, the high wind erosion rate of the cultivated sandy soil showed its extreme sensitivity to cultivation, possibly because of the structureless nature of the loose sand. The "effect of cultivation on wind erosion" index, eta ( = q(c)/q(0)), increased exponentially with the increase of wind speed, indicating that under higher wind speed conditions, Cultivation could result in more severe wind erosion. (c) 2006 Elsevier Ltd. All rights reserved. |
| 收录类别 | SCI |
| WOS关键词 | TUNNEL SIMULATION ; EROSION ; TILLAGE ; DISTURBANCE ; PARTICLES ; COVER |
| WOS研究方向 | Environmental Sciences & Ecology |
| WOS类目 | Ecology ; Environmental Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000243505400009 |
| 出版者 | ACADEMIC PRESS LTD ELSEVIER SCIENCE LTD |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2555896 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Li, X. -Y. |
| 作者单位 | 1.Beijing Normal Univ, Coll Resources Sci & Technol, Beijing 100875, Peoples R China 2.Beijing Normal Univ, Key Lab Environm Change & Nat Disaster, Minist Educ, Beijing 100875, Peoples R China 3.Beijing Normal Univ, China Ctr Desert Res, Beijing 100875, Peoples R China 4.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, L. -Y.,Li, X. -Y.,Shi, P. -J.,et al. Wind erodibility of major soils in the farming-pastoral ecotone of China[J]. JOURNAL OF ARID ENVIRONMENTS,2007,68(4):611-623. |
| APA | Liu, L. -Y..,Li, X. -Y..,Shi, P. -J..,Gao, S. -Y..,Wang, J. -H..,...&Xiao, B. -L..(2007).Wind erodibility of major soils in the farming-pastoral ecotone of China.JOURNAL OF ARID ENVIRONMENTS,68(4),611-623. |
| MLA | Liu, L. -Y.,et al."Wind erodibility of major soils in the farming-pastoral ecotone of China".JOURNAL OF ARID ENVIRONMENTS 68.4(2007):611-623. |
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来源：寒区旱区环境与工程研究所
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