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当前位置: 首页 > 文章 > 应用Penman-Monteith简化公式计算极端干旱区参考作物潜在腾发量 新疆农业科学 2012,49 (5) 909-916
Position: Home > Articles > A Calculation of Potential Evapotranspiration of Reference Crop with Penman-Monteith Simplified Formula in Extremely Arid Region Xinjiang Agricultural Sciences 2012,49 (5) 909-916

应用Penman-Monteith简化公式计算极端干旱区参考作物潜在腾发量

作  者：
刘洪波;白云岗;张江辉;虎胆·吐马尔白
单  位：
新疆农业大学水利与土木工程学院;新疆水利水电科学研究院
关键词：
Penman-Monteith公式;Penman-Monteith简化公式;参考作物潜在腾发量;极端干旱区
摘  要：
【目的】用Penman-Monteith(P-M)简化公式代替标准的Penman-Monteith公式计算参考作物的潜在蒸腾量。【方法】通过2008～2010年鄯善试验站的气象资料,对Penman-Monteith简化公式(忽略饱和差项)计算的参考作物潜在腾发量(ET0)与FAO推荐的P-M公式计算的参考作物潜在腾发量(ET0(PM))进行比较。【结果】Penman-Monteith简化公式计算的ET0年值略小于Penman-Monteith公式计算的年值,其绝对偏差为75～114 mm,相对偏差为10.5%～14.3%,变异系数分别为0.04和0.06,简化公式的计算稳定性略好于标准的PM公式。两种方法计算的参考作物潜在腾发强度的月变化相近,统计分析的标准差分别为0.80和0.83,变异系数分别为0.23和0.2。空气动力学项中的饱和差项是Penman-Monteith简化公式和标准Penman-Monteith公式的主要差别,通过回归分析表明两种公式计算的参考作物潜在腾发量具有显著的线性相关性,各月a值很接近,差值最大为0.08,最小仅为0.004 1,较好的说明了空气动力学项中的饱和差项对参考作物潜在腾发量的影响较小。【结论】在极端干旱区可利用Penman-Monteith简化公式代替标准的Penman-Monteith公式计算参考作物的潜在蒸腾量。
译  名：
A Calculation of Potential Evapotranspiration of Reference Crop with Penman-Monteith Simplified Formula in Extremely Arid Region
作  者：
LIU Hong-bo1,2,BAI Yun-gang2,ZHANG Jiang-hui2,Hudan Tumaerbai1(1.College of Water Conservancy and Civil Engineering,Xinjiang Agricultural University,Urumqi 830052,China;2.Research Institute of Water Resources and Hydropower,Urumqi 830049,China)
关键词：
Penman-Monteith formula;Penman-Monteith simplified formula;potential evapotranspiration of reference crop;extremely arid region
摘  要：
【Objective】 PM simplified formula instead of the standard PM formula was used to calculate the reference crop potential evapotranspiration.【Method】 Basing on the meteorological data of Shanshan experiment station from the year 2008 to 2010,the Penman-Monteith reference for the calculation of reference crop evapotranspiration(ET0) recommended by FAO Penman-Monteith formula crop potential evapotranspiration(ET0 in(PM)) was compared.【Result】 The results showed that the ET0 year value of Penman-Monteith simplified formula was slightly less than that of the Penman-Monteith formula,and the absolute deviation was 75-114 mm,the relative deviation was 10.5%-14.3%,and the coefficient of variation were 0.04 and 0.06 respectively.The calculation of the simplified formula for stability was slightly better than the standard PM.Teng monthly variation of the intensity of the two ways to calculate the reference crop potential was close to the statistical analysis of the standard deviation of 0.80 and 0.83,respectively,and coefficients of variation were 0.23 and 0.2.Saturation in the aerodynamics is the main difference between PM simplified formulas and standard PM formula.Regression analysis showed that the two formulas to calculate the reference crop evapotranspiration was a significant linear correlation,and the value of each month was very close to the maximum difference,that was 0.08,and the minimum was only 0.004 1,which showed that saturation in the aerodynamics of the reference crop potential evapotranspiration was smaller.【Conclusion】 In extremely arid areas PM could be used to simplify the formula instead of the standard PM formula to calculate the reference crop potential evapotranspiration.

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