灌溉排水学报2017，Vol.36Issue(7)：94-99,6.DOI:10.13522/j.cnki.ggps.2017.07.017
参考作物蒸散量对气象要素的敏感性分析
Sensitivity Analysis of the Reference Crop Evapotranspiration to Meteorological Factors
摘要
Abstract
Calculating the reference crop evapotranspiration (ET0) from the Penman-Monteith formula needs a number of meteorological data and we analyzed the sensitivity of the ET0 to different meteorological factors using weather data measured daily in Xinxiang from 1951 to 2003. We firstly calculated the ET0 using these measured data and the Penman-Monteith formula, and then analyzed its sensitivities to different meteorological factors based on the sensitivity curves and sensitivity coefficients. The results showed that the ET0 was correlated posi-tively with temperature (T), wind speed (U2) and sunshine hours (n), and negatively with the relative humidity (RH). From January to December, the sensitive coefficients of ET0 to RH and WS decreased first and then in-creased, but its sensitive coefficients to SH and T increased first and then decreased. The sensitivity of annual ET0 to meteorological factors was in the order of RH>U2>n>T. Seasonally, the sensitivity of ET0 to meteorological fac-tors was in the order of RH>U2>n>T in the first and fourth quarters, RH>n>U2>T in the second quarter, and RH>n>T>U2 in the third quarter. In critical growing season, the sensitivity of ET0 to meteorological factors was in RH>U2>n>T in January, March and October, and RH>n>U2>T in May.关键词
参考作物蒸散量/气象要素/敏感性/敏感曲线/敏感系数Key words
reference crop evapotranspiration/meteorological factors/sensitivity/sensitivity curve/sensitive coefficient分类
农业科技引用本文复制引用
李迎,吕谋超,张海文,邓忠,刘春成,姜明梁..参考作物蒸散量对气象要素的敏感性分析[J].灌溉排水学报,2017,36(7):94-99,6.基金项目
中央级科研院所基本科研业务费专项(中国农业科学院农田灌溉研究所)资助项目(1610262016021) （中国农业科学院农田灌溉研究所）
北京市教委科技一般项目(KM201612448006) （KM201612448006）
