利用青海西宁气象站点1970～2016年的逐日气象资料,以Penman-Monteith估算结果作为计算参考作物蒸散量（ET0）的标准,讨论Hargreaves-Samani法、McCloud法与1948年修正Penman法三种方法在青海省西宁地区的适用性。结果表明：1948年修正Penman法和Hargreaves-Samani法优于McCloud法；McCloud估算结果显著偏小；Hargreaves-Samani法,在ET0较小时估算值与Penman-Monteith方法计算值相当,在ET0较大时,估算结果显著高于标准值；1948年修正Penman法与Penman-Monteith法相关系数较高,一致性最好,可以对1948年修正Penman法的估算值乘以一个常数就能够近似代替Penman-Monteith公式的估算值。
Abstract
Based on the daily meteorological data of Xining meteorological stations from 1970 to 2016,by using Hargreaves-Samani method, McCloud method and 1948 penman method with the Penman-Monteith method as the standard of calculating reference crop evapotranspiration (ET0), attempt to estimate applicability of the three methods in Xining region. The results show: 1948 penman method and the Hargreaves-Samani method is superior to McCloud; the result of McCloud estimating is significantly smaller; Hargreaves-Samani method has the same calculating values with the Penman-Monteith in small ET0, and estimates significantly higher than the standard value in high ET0; the correlation coefficient between 1948 penman method and Penman-Monteith method is high, and its has the best consistency ,the estimate value of Penman-Monteith equation can be instead of 1948 penman method by Multipling a constant approximately,improving the accuracy of estimation.
关键词
参考作物蒸散量 /
Hargreaves-Samani /
1948年修正Penman /
McCloud /
西宁 /
适用性
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参考文献
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