沙漠与绿洲气象2017，Vol.11Issue(1)：81-86,6.DOI:10.12057/j.issn.1002-0799.2017.01.011
1961—2015年焉耆盆地霜冻气候分析
Analysis of Frost during 1961-2015 in Yanqi Basin
摘要
Abstract
Based on the first frost dates, last frost dates and frost -free period dates of meteorological data in recent 55 years of Yanqi basin, the change of frost was analyzed by using the methods of linear trend rate, polynomial trend and M-K test. The main results indicated as follows:(1)The average dates of the first and last frost were October 7th and April 8th respectively, and the average frost-free period was 181 d during the past 55 years in Yanqi basin. The stability of the last frost dates was better , but the stability of the first frost dates was poor.(2)The first and last frost dates had significant delayed by the rate of 2.1 d/10a and 3.75 d/10 a respectively, and frost-free period shortened by the rate of 1.68 d/10 a in recent 55 years. The rate of delay on last frost dates was greater than first frost dates, but There are differences in postponement trends.The frost free period was not significantly shortened. The last frost dates and frost-free period were obvious decadal characteristics. The impact of last frost dates on frost- free period was more obvious than first frost dates.(3)First frost dates, last frost dates and the frost-free period had significantly mutation in 1986 ,1983 and 1969 during the past 55 years ,respectively. The first and last frost dates had shown by the advance into the obvious postpone, and frost-free period had showed the change from extension to shortening.(4)The frequency of the earliest or earlier first frost dates were 4% and 13% respectively, and they mainly occurred from 1970s to 1990s. The frequency of last frost dates were extremely latest at the rate of 7% and later at the rate of 9% respectively, and occurred from 1980s to 1990s.(5)The fact is the key to optimize the structure of agricultural production in Yanqi basin that the last frost date significantly delayed and frost free period was shortened.关键词
焉耆盆地/霜冻/气候特征Key words
Yanqi basin/frost/climate characteristics分类
农业科技引用本文复制引用
隆永兰,刘濛濛,张山清,夏玉莲..1961—2015年焉耆盆地霜冻气候分析[J].沙漠与绿洲气象,2017,11(1):81-86,6.基金项目
新疆气象局科研基金面上课题(ms201611)资助. （ms201611）
