Dust emission from desertified lands in the Heihe River Basin, Northwest China
文献类型：期刊论文
| 作者 | Wang, Tao; Ta, Wanquan; Liu, Lichao |
| 刊名 | ENVIRONMENTAL GEOLOGY
 |
| 出版日期 | 2007-02-01 |
| 卷号 | 51期号:8页码:1341-1347 |
| ISSN号 | 0943-0105 |
| DOI | 10.1007/s00254-006-0432-9 |
| 通讯作者 | Ta, Wanquan(tawq@ns.lzb.ac.cn) |
| 英文摘要 | The annual and seasonal dust emissions were calculated for eight types of desertified lands at 120 sites in the Heihe River Basin of northwestern China. The results showed that dust emission rates increased from the middle to the lower reaches of the river by a factor of up to 10(3). There two strongest areas of dust emission are the dried-up Gaxun Lake with a dust emission rate of 1.6 t ha(-1) year(-1), and the desertified grassland areas around the abandoned Heicheng City, with a dust emission rate of 0.6-0.7 t ha(-1) year(-1). The total annual dust emissions with their particle diameters less than 50, 30, and 10 mu m were 1.71 x 10(6), 1.11 x 10(6), and 0.555 x 10(6) t, respectively. Dust emission rates showed striking seasonal variations, with the maximum value (45%) occurring in spring and the minimum value (13.5%) in summer. The mineral aerosol-size distributions were also measured and the results showed that the size distributions for dust and non-dust events were both trimodal, in contrast with the widely accepted view that primary particles such as aeolian dust are coarse, whereas particles less than 1 mu m in diameter are mainly secondary particulate substances such as ammonium nitrate, ammonium sulfate, and organic matter. |
| 收录类别 | SCI |
| WOS关键词 | NORTHERN CHINA |
| WOS研究方向 | Environmental Sciences & Ecology ; Geology ; Water Resources |
| WOS类目 | Environmental Sciences ; Geosciences, Multidisciplinary ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:000244186500006 |
| 出版者 | SPRINGER |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2556006 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Ta, Wanquan |
| 作者单位 | Chinese Acad Sci, Key Lab Desert & Desertificat, Cold & Arid Reg Environm & Engn Inst, Lanzhou 730000, Gansu Prov, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Tao,Ta, Wanquan,Liu, Lichao. Dust emission from desertified lands in the Heihe River Basin, Northwest China[J]. ENVIRONMENTAL GEOLOGY,2007,51(8):1341-1347. |
| APA | Wang, Tao,Ta, Wanquan,&Liu, Lichao.(2007).Dust emission from desertified lands in the Heihe River Basin, Northwest China.ENVIRONMENTAL GEOLOGY,51(8),1341-1347. |
| MLA | Wang, Tao,et al."Dust emission from desertified lands in the Heihe River Basin, Northwest China".ENVIRONMENTAL GEOLOGY 51.8(2007):1341-1347. |
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来源：寒区旱区环境与工程研究所
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