| 魏光辉,杨鹏年.新疆焉耆盆地ET0计算方法的适用性评价[J].干旱地区农业研究,2015,33(6):46~51 |
| 新疆焉耆盆地ET0计算方法的适用性评价 |
| Applicability evaluation of ET0 calculation method in Yanqi Basin of Xinjiang |
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| DOI：10.7606/j.issn.1000-7601.2015.06.08 |
| 中文关键词: ET0 计算模型 适用性评价 焉耆盆地 干旱区 |
| 英文关键词:ET0 calculation model applicability evaluation Yanqi Basin arid area |
| 基金项目:水利部公益性行业科研专项(201301102)；新疆维吾尔自治区重大科技专项(201130103-3)；新疆水文学及水资源重点学科(XJSWSZYZDXK20101202) |
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| 中文摘要: |
| 以新疆焉耆盆地为例，以PM模型计算值为标准，评价了H-S、P-T与McCloud模型在研究区的适用性。结果表明：太阳总辐射与ET0日值之间呈现极强的相关性（r=0.937）与偏相关性（r=0.962），说明太阳辐射能量是影响ET0的主要因素；在ET0日值计算中，H-S模型计算结果显著大于PM模型，P-T模型与McCloud模型计算值显著小于PM模型，其中H-S模型计算精度最高，均方根误差为0.836 mm，平均偏差为0.638 mm；通过对H-S模型、P-T模型与McCloud模型进行修正，不同模型的计算精度均有所提高，修正后P-T模型的计算精度最高（均方根误差RMSE为0.613 mm，纳什效率指数E为0.6821），且3种模型修正后ET0日值与PM模型计算值均无显著差异。 |
| 英文摘要: |
| This paper taking Yanqi Basin as an example, using the calculated ET0 value by PM model as standard, has evaluated the applicability of H-S, P-T and McCloud models in study area. The results showed that: The total solar radiation with the ET0 value has shown a very strong correlation(r=0.937) and partial correlation(r=0.962). It explained that the solar radiation energy was the main impact factor to the ET0. In the calculation of ET0 value, the calculated result by H-S model was significant higher than the PM model, the P-T and McCloud models were significant less than PM model. Among them, the calculated accuracy was the highest by the H-S model, the , root mean square error was 0.836 mm, the average deviation was 0.638 mm. Through modification to the H-S, P-T and McCloud models, the calculation precision for different models total obtained improvement. The modified P-T model obtained the highest accuracy (RMSE was 0.613 mm, Nash-Sutcliffe E was 0.6821), the ET0 value by three modified models had no significant differences with PM model. |
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