| 甘肃雨养农业区降雨概率特征研究 |
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| 引用本文： | 杨启国,杨兴国,张旭东.甘肃雨养农业区降雨概率特征研究[J].甘肃气象,2002,20(2):34-36. |
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| 作者姓名： | 杨启国 杨兴国 张旭东 |
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| 作者单位： | 兰州干旱气象研究所 甘肃兰州730020
(杨启国，杨兴国)，兰州干旱气象研究所 甘肃兰州730020(张旭东) |
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| 摘 要： | 利用甘肃雨养农业区 19个代表站点的 4 0a降雨量资料 ,结合weibull、gringorfen等概率统计分析的方法 ,对这一地区的降雨概率特征进行了研究 ,结果表明 ,甘肃雨养农业区各站年降雨量与其概率对数相关显著 ,可以利用所得关系式计算任一概率下的降雨量 ;各站年降雨量服从正态分布 ,也可用正态法求算任一概率下的降雨量 ;甘肃雨养农业区年平均有效降雨量理论上可以满足小麦生育期的作物需水量。
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| 关 键 词： | 甘肃雨养农业区 降雨概率特征 有效降雨量 |
| 文章编号： | 1006-7639(2002)-02-0034-03 |
| 修稿时间： | 2001年12月31 |
Study on Characteristics of Rainfall Probability in Rainfed agricultural region of Gansu Province |
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| YANG Qi-guo,YANG Xing-guo,ZHANG Xu-dong.Study on Characteristics of Rainfall Probability in Rainfed agricultural region of Gansu Province[J].Gansu Meteorology,2002,20(2):34-36. |
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| Authors: | YANG Qi-guo YANG Xing-guo ZHANG Xu-dong |
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| Abstract: | Depend on the method of Weibull and Gringorfen, the characteristics of rainfall probability were studied by using 40 years precipitation data of 19 meteorological stations in rainfed agricultural region of Gansu Province.The results were as follows: there are of strong correlates between yearly rainfall of every meteorological stations and logarithm of yearly rainfall probability, so yearly rainfall can be calculated by calculational formula in any probability; yearly rainfall was obeyed normal school, so yearly rainfall can be calculated by this method; wheat crop water requirement was contented with the annual average available rainfall in rainfed agricultural region of Gansu Province. |
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| Keywords: | Rainfed agricultural region of Gansu Province Characteristics of rainfall probability Available rainfall |
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