古田近40年霜及霜冻的气候特征分析

Climatic Characteristics of Frost and Frost in Gutian in Recent 40 Years

利用古田县1981—2020年逐年的霜日、初霜日、终霜日、无霜期等资料,采用气候倾向率法、Mann-Kendall非参数统计检验方法,分析古田县1981—2020年的霜及霜冻的气候变化趋势。结果表明:初霜日偏晚、终霜日偏早、无霜期变长以及霜日变少。

Based on the data of frost day,first frost day, last frost day and frost free period in Gutian County from 1981 to 2020,the climate change trend of frost and frost in Gutian County from 1981 to 2020 is analyzed by using the climate tendency rate method and Mann Kendall nonparametric statistical test method. The results show that the late initial frost day, the early final frost day, the longer frost free period and the less frost day are the development trend of climate change in Gutian County in the future.