摘要
根据气温资料,采用线性趋势函数、Morlet小波分析方法,研究了蚌埠市的年、季平均气温以及年平均最高、年平均最低气温的变化趋势,探讨了温度变化对农业生产的影响。结果表明:1952—2011年蚌埠市年平均气温呈上升趋势,气候倾向率为0.23℃·10a-1,其中春、秋、冬的增温趋势较为明显,夏季变化趋势不明显;年平均气温在1990年以前相对偏低,呈现波动变化,增温趋势不显著;1990年后相对偏暖,增温趋势明显。年平均最高气温和年平均最低气温均呈上升趋势,气候倾向率分别为0.01℃·10a-1、0.37℃·10a-1;年平均最低气温的增温幅度远大于年平均最高气温,表明夜间增温较多,白天增温较少,气温日较差逐渐减小。夜间温度升高,将增加植物的呼吸消耗,不利于物质的积累,可对农业生产带来负面影响。
According to the air temperature, using linear trend function and Morlet wavelet analysis method, variations of the annual and seasonal air temperature of Bengbu in 1952-2011 were studied. At the same time the variations of the annual maximum, minimum air temperatures were also explored. The effects of the variation on agriculture were discussed. The results showed that： annual average temperature appeared to be rising; the rate of climate tendency was 0.23℃·10a-1; the warming trend was more obvious in spring, autumn and winter than in summer; the tendency was not clear in summer; annual average air temperature was relatively low before 1990, and to be a fluctuate change; the warming trend was not clear; however, after 1990, the annual average air temperature was relatively high and the warming trend was clear. Annual average maximum and minimum air temperatures showed an increasing trend; the climate tendency rates were 0.01 ℃·10a-1, 0.37 ℃·10a-1, separately; the climate tendency rates of annual average minimum air temperature was higher than that of the maximum temperature indicating that the temperature increased more in nighttime than in daytime, which decreased the diurnal temperature range. The increased temperature in nighttime may increase the respiration of plant, which would have negative effect on agricultural production.
出处
《生态科学》
CSCD
北大核心
2014年第2期327-331,共5页
Ecological Science
基金
安徽农业大学稳定和引进人才基金资助
关键词
蚌埠市
气温
线性趋势
MORLET小波分析
气温日较差
Bengbu City
air temperature
linear trend
Morlet wavelet analysis
diurnal temperature range
