| 宁夏盐池春季局地沙尘暴特征及其与下垫面的关系 |
| |
| 引用本文： | 张智,梁培,范彦芳. 宁夏盐池春季局地沙尘暴特征及其与下垫面的关系[J]. 干旱区资源与环境, 2009, 23(7): 39-43 |
| |
| 作者姓名： | 张智 梁培 范彦芳 |
| |
| 作者单位： | 宁夏气象信息中心,银川750002;宁夏气象防灾减灾重点实验室,银川750002;宁夏气象信息中心,银川,750002 |
| |
| 基金项目： | 中国气象局“气候变化对宁夏主要农作物及适应性影响研究”项目(CCSF2007-27)资助 |
| |
| 摘 要： | 通过对宁夏盐池1980-2006年春季局地沙尘暴资料的分析表明,盐池春季局地沙尘暴呈减少的趋势,局地沙尘暴占沙尘暴总次数的三分之二,71%的局地沙尘暴持续时间在3小时以内,最大风速集中在5.1~15.0m/s之间,未达到大风标准,引起局地沙尘暴的风向集中出现在N、NNW、WNW、W方向。土壤湿度与局地沙尘暴次数的变化趋势基本相反,两者相关系数通过0.01信度检验;干土层深度与局地沙尘暴的变化趋势基本一致,相关系数通过0.01的信度检验。土壤湿度大有利于抑制局地沙尘暴的发生,干土层深度深有利于局地沙尘暴的发生和持续。
|
| 关 键 词： | 宁夏 盐池 沙尘暴 下垫面 |
The characteristics of regional spring sandstorm and the relationship with land cover in Yanchi of Ningxia |
| |
| ZHANG Zhi,,LIANG Pei,FAN Yanfang. The characteristics of regional spring sandstorm and the relationship with land cover in Yanchi of Ningxia[J]. Journal of Arid Land Resources and Environment, 2009, 23(7): 39-43 |
| |
| Authors: | ZHANG Zhi LIANG Pei FAN Yanfang |
| |
| Affiliation: | 1.Ningxia Meteorological Information Center;Yinchuan 750002;P.R.China;2.Ningxia Key Laboratory of Meteorological Disasters Preventing and Reducing;P.R.China |
| |
| Abstract: | The spring regional sandstorm from 1980 to 2006 in Yanchi of Ningxia was analyzed.The results showed that the sandstorm was decreased,the regional sandstorms took two-third of all the sandstorms.The duration of the 71% of the regional sandstorms was less than 3 hours;the maximum wind speed was occurred almost from 5.0m/s to 15.0m/s;the frequency of wind direction was occurred at N and NNW and WNW and W;the trend of the soil moisture and precipitation was approximately reverse with the regional sandstorm;the... |
| |
| Keywords: | Ningxia Yanchi sandstorm land cover |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
