【作者】 赵少华； 樊彤； 杨永辉； 邱国玉； 李春强；

【Author】 ZHAO Shao-hua~(1,2)FAN Tong~1 YANG Yong-hui~1 QIU Guo-yu~2 LI Chun-qiang~3 (1.Agricultural Resources Research Center,Institute of Genetic and Developmental Biology,Chinese Academy of Sciences;Hebei Key Laboratory of Water-Saving Agriculture,Shijiazhuang 050021,China; 2.Key Laboratory of Environmental Change and Natural Disaster,Ministry of Education of China Beijing Normal University/ College of Resources Science and Technology,Beijing Normal University; 3.Institute of Meteorology Sciences of Hebei Province)

【机构】 中国科学院遗传与发育生物学研究所农业资源研究中心/河北省节水农业重点实验室； 北京师范大学环境演变与自然灾害教育部重点实验室/北京师范大学资源学院； 河北省气象科学研究所；

【摘要】 根据河北平原九个地区49个气象台站的气象资料,利用 Hargreaves 模型模拟分析了1966-1999年河北平原共34a 蒸散、降水和气温等气候的时空变化特征。结果表明,在空间分布上以平原北部的沿海地区降水较多,南部内陆地区降水较少,但在时间序列上整体呈现下降趋势,并具有较大的变异。蒸散的变化在时间尺度上也呈现逐渐下降趋势,但变异较小,且在空间上以南部地区较高,北部地区较低,这是由于纬度影响使得南北气温差异造成的。对于温度,年最高气温、平均气温和最低气温均呈递增趋势,其中最低温度的递增趋势比较明显。九个地区的温度变化较为一致增温速率较高,平均达0.38℃/10a,这是因为近二三十年的增温幅度较大,北部增温快于南部。降雨的逐渐减少,加上平均气温的升高,表明近34a 来河北平原气候趋向干旱化。更多还原

【Abstract】 Recent spatial and temporal variations of climatic,elements,such as evapotranspiration ( ET),precipitation and air temperature in He- bei Plain was analyzed using Hargreaves model based on climatic data derived from 49 meteorological stations from 1966 to 1999. Results showed that coastlands in north have more precipetitaion than inner areas in south. Precipitation decreased from 1966 to 1999 with a considerable varia- tion. ET was higher in south area than in north area which was affected by latitudinal distribution of temperature. ET decreased from 1966 to 1999 with little variation. Annual maximum,minimum and mean air temperatures were consistently increased gradually,among which the annual mini- mum temperature increased most obviously. Air temperature rising rate whs 0.38℃ per 10 years,which was mainly contributed by temperature rising in 20-30 years. The rising rate of temperature in north region was higher than in south region. Climate of Hebei Plain tended to be dry due to decline of precipitation and increase of temperature.更多还原