农业工程学报2012，Vol.28Issue(8)：19-24,6.DOI:10.3969/j.issn.1002-6819.2012.08.003
玛纳斯河流域ET0影响因子分析及对Hargreaves法的修正
Influencing factors analysis of reference crop evapotranspiration and modification of Hargreaves method in Manas river basin
摘要
Abstract
Accurate estimation of reference crop evapotranspiration(ET0) is essential to water resources planning and farm irrigation scheduling. Based on the meteorological data from-1953 to 2008,ET0 in Manas river basin (a typical inland river in Xinjiang province) was calculated by Penman-Monteith method (PM),and the meteorological factors affecting ET0 was analyzed by the path analysis. The results showed that temperature was the main factor affecting ET0. Assuming the ET0 calculated by PM as the standard value,values of monthly ET0 calculated by Hargreaves method were higher,especially from April to October per year. Based on meteorological data of 35 years,the Hargreaves method was modified by the Bayesian method,and was validated with the meteorological data of the other time series of 21 years. Results indicated that the accuracy of the modified Hargreaves method in calculating ET0 was greatly improved. The modified Hargreaves method that is simpler than PM method can be used to calculate ET0 in other inland river areas.关键词
作物/蒸发蒸腾量/温度/Penman-Monteith法/Hargreaves法/贝叶斯方法/内陆河Key words
crops/evapotranspiration/temperature/Penman-Monteith method/Hargreaves method/Bayesian method/inland river分类
农业科技引用本文复制引用
范文波,吴普特,韩志全,姚斌..玛纳斯河流域ET0影响因子分析及对Hargreaves法的修正[J].农业工程学报,2012,28(8):19-24,6.基金项目
国家自然科学基金(30900865). （30900865）
