CAJ | 학술논문

利用临清市1981～2010年逐日观测资料，对该市初霜日期、终霜日期和无霜期气候特征进行了统计与分析。结果表明：30 a 来，霜日有明显的季节性变化，主要发生在冬季，冬季霜日占全年霜日的70％，其中12月霜日最多，达到了595 d，占全年霜日的28％；霜期变化呈现初霜日逐渐推迟、终霜日逐渐提前、无霜期延长的趋势。
이용림청시1981～2010년축일관측자료，대해시초상일기、종상일기화무상기기후특정진행료통계여분석。결과표명：30 a 래，상일유명현적계절성변화，주요발생재동계，동계상일점전년상일적70％，기중12월상일최다，체도료595 d，점전년상일적28％；상기변화정현초상일축점추지、종상일축점제전、무상기연장적추세。
The statistical and analysis of the climate characteristics of the first frost date , the end frost date and the frost-free period were done with the daily observation data in Linqing City from 1981 to 2010.The results showed that in the recent 30 years, frost dates had obvious seasonal variation, it occured mainly in winter, frost dates in winter accounting for 70% of the year, the most biggest frost date in December, accounting for 28% of the year with 595 days.The first frost date, the last frost date and the frost-free period had trends of gradually delayed, advanced and prolonged, respectively.