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中国农学通报 ›› 2015, Vol. 31 ›› Issue (29): 181-190.doi: 10.11924/j.issn.1000-6850.casb15050147

所属专题: 农业气象

• 资源 环境 生态 土壤 气象 • 上一篇    下一篇

近35年甘肃庆阳黄土高原地带气候特征分析

路亚奇,焦美龄,曹彦超   

  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;甘肃省庆阳市气象局,甘肃省庆阳市气象局,甘肃省庆阳市气象局
  • 收稿日期:2015-05-25 修回日期:2015-09-06 接受日期:2015-07-24 出版日期:2015-10-28 发布日期:2015-10-28
  • 通讯作者: 路亚奇
  • 基金资助:
    甘肃省气象局科技项目“陇东大雾天气定量化预报指标”(2014-08)

Climate Characteristic Analysis of Loess Plateau Areas in Qingyang, Gansu in Recent 35 Years

  • Received:2015-05-25 Revised:2015-09-06 Accepted:2015-07-24 Online:2015-10-28 Published:2015-10-28

摘要: 通过研究全球气候变化下甘肃庆阳地区气候变化的特点,为黄土高原地带农业及经济的发展提供理论依据。研究利用庆阳市8 站近35 年的降水、气温、日照时数等气象资料,应用多种统计方法分析了庆阳黄土高原地带的区域气候特征及其变化规律。结果表明,甘肃庆阳黄土高原地带降水量季节分配不均,干湿季分明,强降水天气均出现在4—9 月。中部和东南部年降水量呈减少趋势,西北部呈增多趋势;气温差异性则表现为山壑地区比平原和川区冬天气温低,夏天气温高,年平均气温呈升高趋势,且升高趋势冬季贡献显著;年日平均日照时数西北部和中部呈增多趋势,东南部则呈明显减少趋势,4—8月为日照时数高值区,且夏季比冬季日照时数多出约1 h。

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Abstract: The paper aims to provide theory basis to the agricultural and economic development of the loess plateau region by means of the climate characteristic research to Qingyang Region, Gansu Province, which is built under the global climate change. The climate characteristics and change rules of Qingyang loess plateau areas was analyzed through various statistical method according to the rainfall, temperature, sunshine duration and other meteorological elements from the 8 stations in Qingyang District during recent 35 years. The result showed that: there was uneven seasonal rainfall distribution and distinction between wet and dry season. Heavy rainfall appeared from April to September; the tendency of annual precipitation in the middle and south-east area reduced, while it was reverse in the north-west area; the temperature difference lied in gully region having low temperature in winter and high one in summer compared with other plains and mountainous areas. Annual average temperature was in an increasing tendency, in which winter played a more important role; there was an increase in the mean annual sunshine duration in the north-west and middle area, on the contrary, south-east declines apparently. April to August was the high sunshine duration area. Besides, sunshine duration in summer was longer about an hour than that in winter.