| 吐鲁番地区参考作物蒸散发模型适用性评价 |
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| 作者姓名： | 范留飞 于洋 他志杰 皮原月 孙凌霄 于瑞德 |
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| 作者单位： | 中国科学院新疆生态与地理研究所 荒漠与绿洲生态国家重点实验室, 乌鲁木齐 830011;中国科学院大学, 北京 100049 |
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| 基金项目： | 新疆维吾尔自治区高层次人才引进工程（Y942171）资助 |
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| 摘 要： | 吐鲁番地区干旱少雨，蒸发量远大于降水量，是中国水资源严重匮乏的地区之一。准确估算参考作物蒸散发量（ET0）是吐鲁番地区农田灌溉系统设计和发展节水农业的基础。利用吐鲁番站2000—2015年作物生长季（4—10月）的气象资料，基于线性回归、均方根误差（RMSE）、平均绝对误差（MAE）和平均相对误差（MRE）评价指标，以FAO-56 Penman-Monteith （FAO-56 PM）模型为标准，评价Priestley-Taylor （P-T）、Hargreaves-Samani（H-S）、Jensen-Haise（J-H）、Turc、Makkink-Allen （M-A）、Trajkovic（Traj）、Makkink-Hansen（M-H）和Berti-Hargreaves（B-H）模型在吐鲁番地区的适用性，并分析各模型偏差原因。结果如下：1）所有模型在生长季期间均呈单峰型变化趋势；H-S、Traj和B-H模型高估月ET0，其他模型均在不同程度上表现出低估现象。2）Traj温度模型模拟精度最高，其RMSE、MAE和MRE分别为6.38 mm、5.69 mm和4.29%； M-H辐射模型模拟精度次之，Turc辐射模型模拟精度最差。3）Rn和VPD是影响温度和辐射模型计算值偏差的主要气象因子。同时分析FAO-56 PM模型计算的ET0和蒸发皿蒸发量之间的关系，为利用蒸发皿水面蒸发量估算吐鲁番地区ET0提供参考。
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| 关 键 词： | 参考作物蒸散发量 FAO-56 Penman-Monteith模型 吐鲁番 蒸发皿蒸发量 适用性评价 |
| 收稿时间： | 2019-02-21 |
| 修稿时间： | 2019-05-24 |
Applicability evaluation of reference crop evapotranspiration models in Turpan |
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| Authors: | FAN Liufei YU Yang TA Zhijie PI Yuanyue SUN Lingxiao YU Ruide |
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| Institution: | State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China;University of Chinese Academy of Sciences, Beijing 100049, China |
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| Abstract: | Turpan region is a typical dryland area with little rainfall. Annual evaporation is much larger than precipitation. It is one of the most arid regions under severe water scarcity in China. Accurate estimation of reference crop evapotranspiration (ET0) is the basis for designing farmland irrigation systems and developing the water-saving agriculture in Turpan. Using meteorological data in crop growing season (from April to October) at Turpan observation station from 2000 to 2015, based on linear regression, root mean square error(RMSE), mean absolute error(MAE), and mean relative error(MRE) statistical indices, taking FAO-56 Penman-Monteith(FAO-56 PM) model as the standard, Priestley-Taylor(P-T), Hargreaves-Samani(H-S), Jensen-Haise(J-H), Turc, Makkink-Allen(M-A), Trajkovic(Traj), Makkink-Hansen(M-H), and Berti-Hargreaves(B-H) models were evaluated in Turpan, and the reasons for the model deviations were analyzed. The results are given as follows. 1) All the models showed the unimodal trend during the growing season. H-S, Traj, and B-H models overestimated the monthly ET0, while other models underestimated the monthly ET0 in varying degrees. 2) The estimated ET0 of Traj model was close to that of FAO-56 PM model, with the RMSE, MAE, and MRE values being 6.38 mm, 5.69 mm, and 4.29%, respectively. The simulation accuracy of M-H model was the second, and Turc model had the worst simulation accuracy. 3) Rn and VPD were the main meteorological factors that affected the deviations of the temperature and radiation models. At the same time, the relationship between the ET0 calculated by the FAO-56 PM model and the pan evaporation was analyzed, which provides a reference for estimating ET0 in Turpan by using the pan evaporation. |
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| Keywords: | reference crop evapotranspiration FAO-56 Penman-Monteith model Turpan pan evaporation applicability evaluation |
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