辽西参考作物潜在腾发量变化及其气象影响因子研究  

Changes of Reference Crop Evapotranspiration and Meteorologic Cause in Western Liaoning Province

作　　者：王鹏飞[1,2] 孙占祥[1,2] 杨宁[1,2] 冯良山[1,2] 于秀捷[3] 

机构地区：[1]辽宁省农业科学院耕作栽培所,辽宁沈阳110161 [2]辽宁省旱作节水工程技术研究中心,辽宁沈阳110161 [3]沈阳区域气候中心,辽宁沈阳110000

出　　处：《辽宁农业科学》2010年第3期36-39,共4页Liaoning Agricultural Sciences

基　　金：国家科技支撑计划(2006BAD29B06);农业部948项目(2006-G52A-Q01);辽宁省自然科学基金计划(20092021);辽宁省科技攻关项目(2008212002)

摘　　要：根据辽西半干旱区阜新、朝阳站上世纪50年代至今的气象资料,采用FAO推荐的Penm an-Monte ith公式计算参考作物潜在腾发量(ET0),统计并分析生长季与非生长季辽西地区的ET0、气象因子变化与及其影响ET0变化的主要气象因子。结果表明:阜新地区ET0表现为随时间的增长趋势,而朝阳表现为随时间逐年减少趋势,80年代至今阜新、朝阳变化趋势显著。阜新、朝阳ET0与各气象因子的相关性大体一致。在辽西地区影响ET0显著的气象因子顺序为:风速>太阳辐射>最高温度>降水量,20世纪80年代至今风速的显著性变化是辽西半干旱区ET0之间差异的主要原因。Changes of reference crop evapotranspiration（ET0）,meteorological factors and primary meteorological factors affecting ET0 during growing seasons and non-growing seasons were analyzed by the computed using Penman-Monteith equation which was recommended by FAO according to weather data after 1950 s＇ in Fuxin and Chaoyang stations of semi-arid area in western Liaoning.The results show that changes ET0 based on increasing trend with time in Fuxin station,and changes ET0 based on decreasing trend with time in Chaoyang station.The trend after 1980 s＇ is significantly.Correlation between Meteorologic Factors and ET0 of Fuxin and Chaoyang is the similar.The influence capacity of weather factors on ET0 is as follows：wind speedsolar radiationmaximum temperatureprecipitation.The difference change trend of ET0 is mainly caused by the significantly change of wind speed after 1980 s＇ in Fuxin and Chaoyang stations of semi-arid area in western Liaoning.

关 键 词：辽西地区 参考作物潜在腾发量 FAO PENMAN-MONTEITH公式 气象因子 FAO PENMAN-MONTEITH公式 

分 类 号：S161.4[农业科学—农业气象学]