Flux and composition of wind-eroded dust from different landscapes of an arid inland river basin in north-western China
文献类型：期刊论文
| 作者 | Wang, GX; Tuo, WQ; Du, MY |
| 刊名 | JOURNAL OF ARID ENVIRONMENTS
 |
| 出版日期 | 2004-08-01 |
| 卷号 | 58期号:3页码:373-385 |
| 关键词 | sand dust plume dust flux landscape production capacity chemical components Heihe River basin |
| ISSN号 | 0140-1963 |
| DOI | 10.1016/j.jaridenv.2003.11.001 |
| 通讯作者 | Wang, GX(gxwang@ns.lzb.ac.cn) |
| 英文摘要 | Using a simple aeolian dust sampler, dust plumes generated from five landscape types (dry lakebed, gobi, farmland, seriously degraded grassland and sandy desert lands) in the inland basin of the Heihe River of north-western China, were monitored, along with wind velocity and temperature, from 2 April to 30 May 2001. Dust fluxes, conditions under which they occurred and an elemental analysis (Na, Mg, Al, Si, S, Cl, K, Ca, Ti, Fe) of the aeolian dust were completed. While one might have expected the sandy desert land to contribute the greatest quantity of aeolian dust, it was the dried terminal lakebed and degraded grasslands, with April dust productions of 29.37 and 23.54 g d(-1), respectively, which outproduced other landscapes by 10-16-fold. The chemical composition of dust differed according to the location of sampling within the Heihe basin, with lower Si and Al, and higher Mg, Na, Cl and S contents occurring in the lower reaches due to presence of high-salt lake sediments. In the spring, under the prevailing conditions of low soil moisture contents, daily mean wind velocities over 4.0 m s(-1), maximum wind velocities over 12.0 m s(-1), and daily maximum air temperatures of over 15 degreesC, almost any landscape can produce aeolian dust. Indeed, this is when the majority of dust storms occur in the arid region. Protecting grasslands in the lower reaches of the Heihe River basin from degradation and rehabilitating the dried-up terminal lake would do much to reduce aeolian losses in the region. (C) 2003 Elsevier Ltd. All rights reserved. |
| 收录类别 | SCI |
| WOS关键词 | EROSION |
| WOS研究方向 | Environmental Sciences & Ecology |
| WOS类目 | Ecology ; Environmental Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000222358000008 |
| 出版者 | ACADEMIC PRESS LTD ELSEVIER SCIENCE LTD |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2556948 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Wang, GX |
| 作者单位 | 1.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, State Key Lab Frozen Soil Engn, Lanzhou 730000, Peoples R China 2.Lanzhou Univ, MOE Natl Lab Western Chinas Environm Syst, Lanzhou 730000, Peoples R China 3.Natl Inst Agroenvironm Sci, Tsukuba, Ibaraki 305, Japan |
| 推荐引用方式 GB/T 7714 | Wang, GX,Tuo, WQ,Du, MY. Flux and composition of wind-eroded dust from different landscapes of an arid inland river basin in north-western China[J]. JOURNAL OF ARID ENVIRONMENTS,2004,58(3):373-385. |
| APA | Wang, GX,Tuo, WQ,&Du, MY.(2004).Flux and composition of wind-eroded dust from different landscapes of an arid inland river basin in north-western China.JOURNAL OF ARID ENVIRONMENTS,58(3),373-385. |
| MLA | Wang, GX,et al."Flux and composition of wind-eroded dust from different landscapes of an arid inland river basin in north-western China".JOURNAL OF ARID ENVIRONMENTS 58.3(2004):373-385. |
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来源：寒区旱区环境与工程研究所
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