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中国农学通报 ›› 2016, Vol. 32 ›› Issue (15): 144-149.doi: 10.11924/j.issn.1000-6850.casb15110126

• 资源 环境 生态 土壤 气象 • 上一篇    下一篇

共和盆地贵南地区近50a降水特征及变化规律

许正福,郭连云   

  1. 青海省贵南县气象局 青海 贵南,青海省海南州气象局 青海 共和
  • 收稿日期:2015-11-25 修回日期:2015-12-16 接受日期:2015-12-24 出版日期:2016-06-01 发布日期:2016-06-01
  • 通讯作者: 许正福
  • 基金资助:
    青海省海南州科技局项目“气候变化对海南州农牧业生产的影响研究”(2015-KH05)。

Characteristics and Variation Trend of Precipitation in Guinan Region of Gonghe Basin

  • Received:2015-11-25 Revised:2015-12-16 Accepted:2015-12-24 Online:2016-06-01 Published:2016-06-01

摘要: 为了掌握青海省共和盆地贵南县大气降水变化规律,为合理利用降水资源提供参考,笔者利用共和盆地贵南县气象局1961—2010 年的逐月降水资料,分析共和盆地贵南县降水的变化趋势,采用MK检验法和t 检验法对贵南县降水量突变情况进行分析。结果表明:近50 年来降水量总体上呈微弱增多趋势;春季、冬季降水分别在1963 年、1971 年发生一个由少到多的突变,年降水量分别在1976 年、2004 年出现了由多到少和由少到多转变,春季、夏季和汛期降水量分别在1982 年、2002 年和2004 年发生了一个由少到多的转变。

关键词: 微波膨胀烟梗, 微波膨胀烟梗, 工艺参数, BP神经网络, 优化

Abstract: The paper aims to grasp the change rules of atmospheric precipitation in Guinan region of Gonghe Basin, Qinghai Province, and provide a reference for rational utilization of precipitation resource. Based on the monthly precipitation data from Guinan weather station from 1961 to 2010, the variation characteristics and trend of precipitation in Guinan region were analyzed. The changes were examined by methods of Mannkendall test and moving t-test. The results indicated that the precipitation had a weak increasing trend in recent 50 years, the spring precipitation and winter precipitation had clear mutation points in 1963 and 1971, the annual precipitation began to decline from 1976, but ascended from 2004, the spring precipitation, summer precipitation and the flood period precipitation had a clear rise in 1982, 2002 and 2004.