| 河西走廊春季透雨日期的变化特征 |
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| 引用本文： | 曹玲,刘明春,郭小芹,许蔚生,蒋菊芳.河西走廊春季透雨日期的变化特征[J].干旱区地理,2011,34(3):436-441. |
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| 作者姓名： | 曹玲 刘明春 郭小芹 许蔚生 蒋菊芳 |
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| 作者单位： | 1. 中国气象局兰州干旱气象研究所,甘肃省干旱气侯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;甘肃省酒泉市气象局,甘肃酒泉,735000
2. 甘肃省武威市气象局,甘肃武威,733000 |
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| 基金项目： | 甘肃省气象局第五批十人计划; 公益性行业(气象)科研专项“西北地区旱作农业对气候变暖的响应特征及其预警和应对技术研究”(GYHY200806021)共同赞助 |
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| 摘 要： | 利用甘肃河西走廊25个测站1971-2007年降水资料,采用EOF、REOF、波谱分析方法,对春季第一场透雨日期的空间特征、时间变化规律进行了诊断分析.结果表明:甘肃河西走廊春季透雨日期在空间场上具有较好的一致性,其第一主分量方差贡献占总体方差的36%.但不同地理条件下透雨日期有所差异,大致可划分为3个区,东南部早,西...
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| 关 键 词： | 河西走廊 春季透雨 时空分布 |
Climatic characteristics of spring soaking rain date in Hexi Corridor |
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| CAO Ling,LIU Ming-chun,GUO Xiao-qin,XU Wei-sheng,JIANG Ju-fang.Climatic characteristics of spring soaking rain date in Hexi Corridor[J].Arid Land Geography,2011,34(3):436-441. |
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| Authors: | CAO Ling LIU Ming-chun GUO Xiao-qin XU Wei-sheng JIANG Ju-fang |
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| Institution: | CAO Ling1,2,LIU Ming-chun3,GUO Xiao-qin3,XU Wei-sheng3,JIANG Ju-fang3(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 CMA,Lanzhou 730020,Gansu,China,2 Jiuquan Meteorological Bureau,Jiuquan 735000,3 Wuwei Meteorological Bureau,Wuwei 733000,China) |
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| Abstract: | The Hexi Corridor is most main commodity grain base and the cash crop centralized production area in the northwest area.Although the area of majority belongs to the irrigated agricultural region,but it still has the very direct relations among the agricultural harvest and famine and the atmospheric precipitation.The occurrence frequency of spring drought in the Hexi Corridor achieves above 70%,which is very big influential in the agricultural production.Although there are many research achievements in the r... |
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| Keywords: | Hexi Corridor spring soaking rain temporal and spatial distribution |
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