| 全球变暖背景下中国北方沙尘暴变化及其对黄土高原成壤的影响研究 |
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| 引用本文： | 贾耀锋,黄春长,毛龙江.全球变暖背景下中国北方沙尘暴变化及其对黄土高原成壤的影响研究[J].干旱区资源与环境,2006,20(5):78-83. |
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| 作者姓名： | 贾耀锋 黄春长 毛龙江 |
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| 作者单位： | 1. 南京大学城市与资源学系,南京,210093
2. 陕西师范大学旅游与环境学院,陕西,710062 |
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| 基金项目： | 国家哲学社会科学基金
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国家自然科学基金
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高等学校博士学科点专项科研项目
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陕西师范大学校科研和教改项目 |
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| 摘 要： | 黄土的风成说表明粉尘黄土沉积及其成壤与沙尘暴之间存在着密切的联系,作为粉尘搬运的典型:沙尘暴是一种在强冷空气条件下粉尘快速而大规模被搬运和沉降事件,而长时间尺度的沙尘暴事件受全球气候变化的控制和影响;同时,沙尘暴发生的频次和强度变化进而会影响黄土高原地区的黄土粉尘沉积及其成壤强度的变化。本文是在考察中国北方沙尘暴成因机制与黄土高原粉尘沉积和成壤之间关系的基础上,探讨了在全球持续变暖背景下中国北方沙尘暴的发生频次变化及其对黄土高原地区粉尘沉积和成壤强度的可能影响。主要结论是:在全球持续变暖的背景下,虽然粉尘沉积区的降水并没有显著增加,但粉尘源区气候趋于暖湿化,导致中国北方沙尘暴有逐年减少的趋势,使得黄土高原粉尘堆积的速率减小,因而,黄土高原地区将进入一个成壤相对强的时期。
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| 关 键 词： | 中国北方 黄土高原 沙尘暴 黄土-古土壤 |
| 文章编号： | 1003-7578（2006）05-078-06 |
| 收稿时间： | 2005-04-30 |
| 修稿时间： | 2005年4月30日 |
Study on Variation of Sand-dust Storms in Northern China and Its Influence on Soil Formation of the Loess Plateau under the Global Warming |
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| JIA Yao-feng,HUANG Chun-chang,Mao Long-jiang.Study on Variation of Sand-dust Storms in Northern China and Its Influence on Soil Formation of the Loess Plateau under the Global Warming[J].Journal of Arid Land Resources and Environment,2006,20(5):78-83. |
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| Authors: | JIA Yao-feng HUANG Chun-chang Mao Long-jiang |
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| Abstract: | The viewpoint of aeolian loess shows that loess deposit and its soil forming intimately related to sand-dust storm.As a classic case of transportation by wind,sand-dust storm is a case that dust be quickly and massively transported and deposited.Sand-dust storm of long-time scale is controlled and affected by the global climate change.The frequency and intensity of sand-dust storm will influence the dust deposition and the intensity of soil forming in the loess plateau.Based on investigation of origin mechanism of sand-dust storm and relation with the dust deposition and soil forming in the loess plateau,the paper mainly explore variation of sand-dust storm in northern China and its possible influence on soil forming of the loess plateau under the global warming.The main conclusions were: although precipitation didn't increase evidently in dust deposit area under the global warming in several decadal years lately,climate of source region of sand-dust had a trend going humid because of increased precipitation in this region,as a result,the dust accumulation rate was decreased in the loess plateau,and consequently,the loess plateau would turn into a period of relatively stronger soil forming. |
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| Keywords: | northern China the loess plateau sand-dust storm loess-paleosoil |
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