摘要
为了达到防灾减灾减轻对农业灾害损失的目的。利用实际监测1961—2011年初霜日、无霜日数资料。采用趋势分析和突变计算,等级的划分等方法,分析了近51年初霜日、无霜日数年际变化及空间分布特点。结果表明,20世纪80年代后伴随全球气候变暖,初霜日大有后延及无霜日数增加特点;初霜日51年来后延速率1.2天/10a计后延6天,突变时间在1983年。无霜日数增加速率为3天/10a,计51年增加15天。一旦发出早霜预警,应尽早尽快做好预防早霜各项措施。
In order to achieve the purpose of disaster prevention and reduction to reduce the agricultural disaster losses. U-sing the actual monitoring 1961 -2011 year- end, first frost date, the day without frost date number , Using the trend a-nalysis and mutation methods computation, the division of grade methods, analysis of nearly 51 years on the first frost dateand the day without frost date number interannual change and spatial distribution characteristics. Results show that after the1980 s with global climate warming, the first frost date and the day without frost date number is delayed and the increase.51 years delayed rate 1. 2 days / 10 a meter off6 days, mutations in 1983 ; the day without frost date number increase ratefor 3 days / 10 a, 51 years increase 15 days. Once the first frost warning, should do a good job in a variety of measures forprevention and early frost as soon as possible as early as possible.
出处
《林业勘查设计》
2017年第1期47-50,共4页
Forest Investigation Design
基金
国家软科学研究计划项目资助
编号2012GXS4B071
黑龙江省科技攻关项目"七星河湿地生态系统变化
原因及环境保护措施的研究"(GC09C106)
关键词
初霜日
无霜日数
时空变化
气候变暖
first frost date
the day without frost date number
temporal - spatial change
Climate warming
