| 农田蒸散量计算方法的比较研究 |
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| 引用本文： | 孙卫国,申双和.农田蒸散量计算方法的比较研究[J].南京气象学院学报,2000,23(1):101-105. |
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| 作者姓名： | 孙卫国 申双和 |
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| 作者单位： | 南京气象学院环境科学系,南京,210044 |
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| 基金项目： | 南京气象学院科研基金资助项目!( 980 1 ) |
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| 摘 要： | 根据观测资料，采用波文比法、廓线梯度法和综合阻地等分别计算了农田植被层上的蒸散量，并对比分析了不同方法之间的相对误差和相关程度。结果表明，用波文比法计算的潜热通量存在系统性偏小的现象，而工法和综合阻抗法的计算结果比较一致。文中还讨论了不同方法的优缺点和产生误差的可能原因。
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| 关 键 词： | 农田蒸散 波文比 廓线梯度 蒸散量 计算法 |
| 修稿时间： | 1999-04-30 |
A comparative study on calculation methods of field evapotranspiration |
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| SUN Wei-guo,SHEN Shuang-he.A comparative study on calculation methods of field evapotranspiration[J].Journal of Nanjing Institute of Meteorology,2000,23(1):101-105. |
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| Authors: | SUN Wei-guo SHEN Shuang-he |
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| Abstract: | Based on the experimental data from wheat fields, the evapotranspiration has been estimated using Bowen ratio energy balance(BREB) method,profile gradient(PG) method and energy balance aerodynamic resistance(EBAR) method respectively.Estimations and their errors are compared among the different methods with the error causes under discussion.Results show that the latent heat flux calculated by the BREB method is systematically about 20% lower than by the PG method and slightly less than by the EBAR method. |
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| Keywords: | field evapotranspiration Bowen ratio profile gradient energy balance aerodynamic resistance |
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