| 焉耆盆地种植冬小麦气候可行性分析 |
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| 引用本文： | 李晓川.焉耆盆地种植冬小麦气候可行性分析[J].新疆气象,2013,7(5):35-39. |
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| 作者姓名： | 李晓川 |
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| 作者单位： | [1]中国气象局兰州干旱气象研究所；甘肃省干旱气候变化与减灾重点实验室；中国气象局干旱气候变化与减灾重点开放实验室,甘肃兰州730020 [2]民勤县气象局,甘肃民勤733300 [3]武威市气象局,甘肃武威733399 [4]永昌县气象局,甘肃永昌737200 |
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| 基金项目： | 甘肃省气象局一线高级专门人才基金资助. |
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| 摘 要： | 摘要：焉耆盆地种植冬小麦关键在于越冬期气象条件能否保证冬麦安全越冬。通过对焉耆县近60a来冬季气候变化特征分析，年极端最低气温总体呈上升趋势，趋势变化率为0．67℃／10a；极端最低气温与积雪深度成明显的反相关，相关系数r=-0．62，即没有积雪的年份最低气温一般不会特别低；60a中积雪深度不到5cm且最低气温低于-24℃的概率只有14％，正常年份焉耆盆地种植强抗寒性冬麦品种可以安全越冬。2008、2009年冬季偏暖，无稳定积雪覆盖，极端最低气温分别为-17．9℃、-21℃，试种冬麦均获得成功。
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| 关 键 词： | 冬小麦 安全越冬 最低气温 焉耆盆地 |
Variation Characteristics of Sandstorm from 1871 to 2010 over Minqin Oasis and Its Cause |
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| ZHAO Mingrui,LIU Mingchun,QIAN Li,WANG Shengyuan,LI Yaping.Variation Characteristics of Sandstorm from 1871 to 2010 over Minqin Oasis and Its Cause[J].Bimonthly of Xinjiang Meteorology,2013,7(5):35-39. |
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| Authors: | ZHAO Mingrui LIU Mingchun QIAN Li WANG Shengyuan LI Yaping |
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| Institution: | 1.Lanzhou Institute of Arid Meteorology, China Meteorological Administration; Key Laboratory of Arid Climatic Change and Reducing Disaster in Gansu Province ; Key Open Laboratory of Arid Climate Change and Disaster Reduction of China Meteorological Administration,Lanzhou 730020, China; 2.Minqin Meteorological Bureau, Minqin 733300, China; 3.Wuwei Meteorological Bureau, Wuwei 733399, China; 4.Yongchang Meteorological Bureau,Yongchang 737200,China) |
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| Abstract: | Based on the meteorological data from Minqin and vicinity from 1971 to 2010, sandstorm variation characteristics and its influencing factors over Minqin oasis are analyzed. The results show as follows. （1）Sandstorms over Minqin oasis were mainly local sandstorms, but persistence, gale intensity and disaster degree of regional sandstorms are greater than local sandstorms. （2）Regional and local sandstorms mainly appeared in the afternoon and evening; local sandstorms occurred more than regional sandstorms in each month （except March）, obviously more from June to August and for seasons, especially more in summer; regional and local sandstorms＇ annual and inter-annual trend was down significantly. （3）The natural causes of frequent sandstorms over Minqin oasis are arid climate and abundant sand source and the decreasing of regional and local sandstorm days is due to the climate change and improved underlying surface. |
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| Keywords: | Minqin sandstorm characteristics cause |
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