摘要
利用青海省海晏地区近40a的降水量分析表明:该地区降水量在时间分布上极为不均,呈现出冬春季降水少,夏秋季降水多的特点,其中每年5~9月的降水量占全年总降水量的85.9%,通过利用Mann-Kendall检验,该地区降水量在1994~1995年前后发生一次突变,突变后降水量有了显著上升。且年降水变化趋势与夏秋季降水量变化趋势一致。
From the precipitation data which studies a specific region in recent 40 years, in Haiyan county of Qinghai province, indicates the following phenomenons ： the region of precipitation on the time distribution is extremely nonuniform, showing the characteristics of the precipitation is less rainfall in winter and more rainfall in summer, between April to September each year the total annual precipitation is 85.9%.By using Mann-kendall testing, the precipitation in the region has abrupt change in the period 1994-1995, and the precipitation has increased significantly after the mutation. Besides , the trend of precipitation change in annual precipitation is consistent with of the summer and autumn precipitation.
出处
《青海草业》
2017年第4期35-37,共3页
Qinghai Prataculture
关键词
海晏地区
降水
变化分析
Haiyan County
Precipitation
Change analysis
