Effect of vegetation coverage on aeolian dust accumulation in a semiarid steppe of northern China
文献类型：SCI/SSCI论文
| 作者 | Wang X. |
| 发表日期 | 2011 |
| 关键词 | Land management Organic carbon Nutrient accumulation Soil particle size long-range transport inner-mongolia wind erosion new-mexico soil grassland australia atmosphere carbon |
| 英文摘要 | Wind erosion and sand storms are common phenomena in semiarid steppes of northern China and could have important impact on soil nutrient balances. Vegetation coverage is one of the key factors influencing wind erosion and aeolian dust accumulation. We conducted a field experiment to investigate the effects of vegetation coverage on airborne dust accumulation and evaluated effects of dust input on the contribution of nutrients to vegetation-mulched fields. Five vegetation coverage treatments (15%, 35%, 55%, 75% and 95%) were constructed, with 0% coverage as a control. Vegetation coverage significantly affected dust accumulation in degenerated semiarid grasslands. The amounts of dust trapped by the increasing coverages were 1.7, 1.8, 2.0, 2.1 and 2.1 times of that by the control plot, respectively. The total accumulations reached a maximum of 2.5 g m(-2) day(-1) at 75% coverage and remained stable with further increasing vegetation coverage. The particles in the dust trapped by treatment without vegetation coverage were significantly coarser than those by treatments with vegetation. In addition, the dust trapped by treatments with vegetation contained more organic carbon, nitrogen and phosphorus content than that by the control plot. This finding indicates that areas with higher vegetation coverage can obtain more nutrients by trapping airborne dust in semiarid steppes. (C) 2011 Elsevier B.V. All rights reserved. |
| 出处 | Catena |
| 卷 | 87 |
| 期 | 3 |
| 页 | 351-356 |
| 收录类别 | SCI |
| ISSN号 | 0341-8162 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/22618]  |
| 专题 | 地理科学与资源研究所_历年回溯文献 |
| 推荐引用方式 GB/T 7714 | Wang X.. Effect of vegetation coverage on aeolian dust accumulation in a semiarid steppe of northern China. 2011. |
入库方式： OAI收割
来源：地理科学与资源研究所
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