邢台市近57年来气候变化趋势分析

[目的]研究近57年邢台市气候变化趋势。[方法]选取邢台市1954～2010年的降水量、气温、日照、相对湿度、地温等气候资料,利用折线图、趋势图、气候变率等方法,对近57年来邢台市气候变化趋势进行了分析,探讨其具体变化趋势特征。[结果]近57年来邢台市年降水量呈较明显的减少趋势,以20.952 mm/10 a的速率减少;年平均气温、年平均最高、最低气温均呈增温趋势,其中最低气温增温速度最快,平均气温次之,最高气温增温速率最慢;年相对湿度以1.460%/10 a的速率减少;0 cm地温呈上升趋势,但5～20 cm浅层地温均呈现出下降趋势,0.8、1.6 m深层地温均呈微弱的下降趋势,3.2 m地温则呈较明显的上升趋势;年总云量以1.673成/10 a的速率增加,年日照时数以100.600 h/10 a的速率减少;年平均气压和年最低气压均呈现出下降趋势,年最低气压下降趋势很明显,而年最高气压呈现出较明显的上升趋势。[结论]该研究为邢台市农业生产资源的开发和利用提供理论依据。

Analysis on Climatic Change Trend in Xingtai City In Recent 57 Years

[Objective] The research aimed to study climatic change trend in Xingtai City in recent 57 years.[Method] Based on climate data(rainfall,temperature,sunshine,relative humidity and ground temperature,etc.) in Xingtai City during 1954-2010,the climatic change trend in Xingtai City in recent 57 years was analyzed by using line chart,trend chart and climatic variability.Moreover,the concrete characteristics of climatic change trend were discussed.[Result] The annual rainfall in Xingtai City in recent 57 years presented obvious decrease trend at velocity 20.952 mm/10 a.The annual average temperature,annual average maximum temperature and annual average minimum temperature all presented rise trend.The rise speed of minimum temperature was the fastest,followed by average temperature.The rise speed of maximum temperature was the slowest.The annual relative humidity decreased at velocity of 1.460 %/10 a.The ground temperature of 0 cm presented rise trend,but the ground temperatures of shallow layers(5-20 cm) all presented decline trend.The ground temperatures of deep layers(0.8 and 1.6 m) both presented weak decline trend.The ground temperature of 3.2 m presented obvious rise trend.The annual total cloud amount increased at velocity of 1.673 into/10 a.The annual sunshine hours decreased at velocity of 100.600 h/10 a.The annual average and annual minimum atmospheric pressures both presented decline trend.The decline trend of annual minimum atmospheric pressure was very obvious,but the annual maximum atmospheric pressure presented obvious rise trend.[Conclusion] The research provided theoretical basis for development and utilization of agricultural production resources in Xingtai City.