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青海湖南部近57年大风日数的变化特征
引用本文:毛万珍,李乐,郭连云.青海湖南部近57年大风日数的变化特征[J].中国农学通报,2019,35(14):115-121.
作者姓名:毛万珍  李乐  郭连云
作者单位:青海省共和县气象局 青海 共和
摘    要:为了更好地剖析青海湖南部大风日数的演变特征,笔者利用青海湖南部共和县气象局1961—2017 年的大风日数观测资料,采用线性倾向估计、M-K突变分析、滑动平均等方法,对大风日数的年代际、年际和季节变化趋势进行分析。结果表明:(1)自1961 年以来该地大风日数随年份的延长呈显著减少趋势,每10 年减少2.0 天;(2)共和地区春、夏、秋、冬四季大风日数均呈现出减少趋势,大风日数的减少幅度大小依次是:春季>夏季>秋季>冬季,其中春季和夏季大风日数的减少趋势显著;(3)突变分析表明,春、夏、秋、冬四季大风日数未发生突变,年大风日数在1975 年发生了由多到少的突变。对于防灾减灾,合理利用气候资源,改善生态环境很有价值。

关 键 词:奶水牛  奶水牛  CNCPS  优化日粮  产奶量  
收稿时间:2018/1/22 0:00:00
修稿时间:2018/9/7 0:00:00

Gale Days in Southern Qinghai Lake During 1961-2017: Variation Characteristics
Abstract:The paper aims to analyze the variation characteristics of the gale days in southern Qinghai lake. Based on the data of the gale days from 1961 to 2017 in Gonghe Meteorological Bureau in southern Qinghai lake, we analyzed the inter- annual, decadal and seasonal change trends of the gale days by using linear tendency estimation, M-K mutation and sliding average method and so on. The results indicated that: (1) the gale days had a significant decline trend in southern Qinghai lake since 1961 with a rate of 2.0 d/10 a; (2) the gale days in spring, summer, autumn and winter were decreasing in Gonghe region, the magnitude of the decrease of the gale days was in the following order: spring>summer>autumn>winter; there was a significant decrease in gale days in spring and summer; (3) the mutation analysis showed that: the annual gale days had a mutation in 1975, and the gale days in the four seasons had no mutation. The study is valuable to the prevention and mitigation of climatic disasters, the reasonable utilization of climatic resources and the improvement of the environmental ecosystem.
Keywords:the area of southern Qinghai lake  gale days  trend  influence  studies
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