| 甘肃敦煌雅丹地质公园区风蚀气候侵蚀力特征 |
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| 引用本文： | 牛清河,屈建军,安志山.甘肃敦煌雅丹地质公园区风蚀气候侵蚀力特征[J].中国沙漠,2017,37(6):1066-1070. |
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| 作者姓名： | 牛清河 屈建军 安志山 |
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| 作者单位： | 中国科学院寒区旱区环境与工程研究所 敦煌戈壁荒漠研究站/甘肃省风沙灾害防治工程技术研究中心/中国科学院沙漠与沙漠化重点实验室, 甘肃 兰州 730000 |
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| 基金项目： | 国家自然科学基金项目（41201003，41671012，41271216）；中国科学院寒区旱区环境与工程研究所青-基金项目（51Y551C01）；中国铁路总公司科技研究开发计划课题（2015G005-B）；科技部科技基础性工作专项项目（2012FY111700） |
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| 摘 要： | 风蚀气候侵蚀力是潜在风力侵蚀强度的重要表征。基于2013年和2014年风速、降水和空气温度、湿度等气象要素的实地观测数据，对甘肃敦煌雅丹地质公园区的风蚀气候因子指数进行了逐月的计算和分析。结果表明：（1）研究区风蚀气候因子指数为151.98±0.13，是全国的三大极大值区之一；（2）研究区风蚀气候因子指数不同于全国干旱半干旱区基本季节变化特征，夏季最大，春夏季明显高于秋冬季，与新疆和田地区的季节变化特征相似；（3）研究区风蚀气候因子指数具有4—8月持续高值、9月至翌年3月持续低值的月变化特征；（4）风蚀气候因子指数的决定性气象因子是风速，而降水的减弱作用甚微；（5）一般来说，雅丹地貌分布区风蚀气候因子指数≥150。
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| 关 键 词： | 风蚀气候侵蚀力 风蚀气候因子指数 雅丹 敦煌雅丹地质公园 |
| 收稿时间： | 2016-05-19 |
| 修稿时间： | 2016-06-17 |
Characteristic of Wind Erosion Climatic Erosivity in Dunhuang Yardang Geo-park of Gansu Province |
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| Niu Qinghe,Qu Jianjun,An Zhishan.Characteristic of Wind Erosion Climatic Erosivity in Dunhuang Yardang Geo-park of Gansu Province[J].Journal of Desert Research,2017,37(6):1066-1070. |
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| Authors: | Niu Qinghe Qu Jianjun An Zhishan |
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| Institution: | Dunhuang Gobi and Desert Research Station/Gansu Center for Sand Hazard Reduction Engineering and Technology/Key Laboratory of Desert and Desertification, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China |
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| Abstract: | Wind erosion climatic erosivity is one of the important signatures of potential wind erosion intensity. Based on the field monitoring data in Dunhuang Yardang Geo-park during 2013 and 2014, including wind velocity, precipitation, air temperature and air relative humidity, wind erosion climatic factor index is computed and analyzed month by month. The results are as follows: (1) The wind erosion climatic factor index is 151.98±0.13, and Dunhuang Yardang Geo-park is one of three maximum value areas in China; (2) Compared to other arid and semi-arid regions in China, the seasonal variation characteristic of wind erosion climatic factor index is unique in Dunhuang Yardang Geo-park, and there are the maximum values in summer, high values in summer and spring while low values in autumn and winter. It's similar to that in the Hotan region of Xinjiang. (3) The wind erosion climatic factor index has monthly variation characteristic with continuous high values between April and August, and low values in other month; (4) The wind erosion climatic factor index is strongly related to average wind velocity, while it is little affected by precipitation; (5) The wind erosion climatic factor index is almost more than 150 in regions with yardangs formation and evolution. |
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| Keywords: | wind erosion climatic erosivity wind erosion climatic factor index yardangs Dunhuang Yardang Geo-park |
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