摘要
利用包头市固阳县1960—2012年气象资料和1982—2012年土壤水分资料,采用回归及相关分析方法,分析了50余年来气候变化及其对土壤水分的影响。结果显示:近53年来,固阳地区温度呈极显著上升趋势,年均气温53年上升了约2.1℃;年均降水量呈现缓慢增加态势,但农作物需水旺季夏季,降水量是缓慢下降的。近31年来,土壤水分呈显著下降趋势,以秋季下降速度最快;土壤水分与温度呈负相关,与降水量呈正相关,其中夏季温度和降水量对土壤水分的影响最为显著。
Based on climatological data from 1960 to 2012 and observational data of soil moisture from 1982 to 2012 at Guyang county of Baotou city, analysis of climate change and its effect on soil moisture in recent 50 years were done by using regression and correlation analysis. The results showed that the temperature at Guyang county showed a significantly up trend and the annual temperature had gone up 2.1 ℃ in recent 53 years. The annual precipitation showed a slow increasing trend, but the precipitation in summer was in slow decline when the crop demanded more water; soil moistures decreased significantly in recent 31 years, which showed a markedly downward trend in autumn; soil moistures had negative correlation with temperature and it had positive correlation with precipitation; effect of temperature and precipitation on soil moisture in summer was significant.
出处
《北方农业学报》
2016年第4期90-93,108,共5页
Journal of Northern Agriculture
基金
内蒙古气象局青年气象科技项目(nmqnqx201302)
包头市气象局应用开发项目(BQ201203)
关键词
温度
降水量
土壤水分
Temperature
Precipitation
Soil moisture
