| 摘要: |
| 本文论述了彭曼—蒙特斯(Pcnman—Montcith)模式的推导过程,分析了产生计算误差的四个原因。对模式中参数的取值进行了讨论,分别比较了考虑和不考虑气压订正与空气层结稳定性订正时计算值的差异,结果表明不考虑气压订正时的计算值比实测值偏小10％～20％,而空气层结稳定性订正对计算结果的影响不如气压订正的显著。 |
| 关键词: 作物蒸腾量,气孔阻力,能量平衡,边界层阻力,估算 |
| DOI： |
| 分类号: |
| 基金项目:国家自然科学基金资助项目 |
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| A Study of Penman-Monteith Model to Estimate Transpiration from Crops |
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Kang Shaozhong Xibng Yunzhang Liu Xiaomin
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| Abstract: |
| This paper deals with the deducing process of Penman-Monteith and also analyses four factors causing errors in calculations. The values of parameters in the model arc discussed , and also, a comparison is made of difference of calculated values with and without taking air pressure calibration into account and air layer stable calibration. The results show that the calculated values without taking air pressure into account are 10% -20% smaller than the actual, measured ones, while air layer stable calibration has less significant effect upon the calculated results than those by air pressure calibration. |
| Key words: crop transpiration, stomatal resistance, energy balance, aerodynamic resistance, estimation |
