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王升,闫妍,黄玉清,胡宝清.Valiantzas模型在广西参考作物蒸散发预测的适用性研究[J].广西科学,2022,29(5):1003-1011. [点击复制]
- WANG Sheng,YAN Yan,HUANG Yuqing,HU Baoqing.Study on the Applicability of Valiantzas Model in the Prediction of Reference Evapotranspiration in Guangxi[J].Guangxi Sciences,2022,29(5):1003-1011. [点击复制]
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| Valiantzas模型在广西参考作物蒸散发预测的适用性研究 |
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王升1,2,3, 闫妍2, 黄玉清1,2, 胡宝清2
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| (1.广西百色国家农业科技园区管理委员会, 广西百色 533612;2.南宁师范大学, 北部湾环境演变与资源利用教育部重点实验室, 广西南宁 530001;3.中国科学院华南植物园, 广东广州 510650) |
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| 摘要: |
| 参考作物蒸散发(Reference Evapotranspiration，ET0)的精确计算是灌溉制度设计、水资源分配及管理的基础。本研究基于广西喀斯特与非喀斯特地区10个典型气象站点5年半的逐日气温、风速、相对湿度和日照时数数据，系统评估了Valiantzas系列简化模型(对应于不同气象因子缺失情况)在广西的适用性，并以Kling-Gupta Efficiency系数(KGE)、Nash效率系数(NSE)、决定系数(R2)、均方根误差(RMSE)以及平均偏差(PBIAS)作为评价指标。结果表明：Valiantzas-M1模型与FAO-56 Penman-Monteith (FAO-56 P-M)模型所需气象因子相同,但精度较高，其NSE和RMSE分别为0.796-0.841和0.557-0.641 mm/d，便于实际应用，可替代FAO-56 P-M模型。缺失风速时，原始Valiantzas-M2模型误差较大，用广西地区平均风速对其进行修正的Valiantzas-M2-modify模型能够提高ET0模拟精度，降低误差，NSE增加了16.6%-17.4%，RMSE降低了24.9%-27.4%。同时缺失太阳辐射和风速时，Valiantzas-M3模型在喀斯特和非喀斯特地区的RMSE值分别为0.991 mm/d和0.988 mm/d。同时缺失相对湿度和风速时，Makkink模型模拟ET0效果优于Valiantzas-M5模型。本研究可为气象站点稀疏、岩溶干旱严重的广西农业水资源高效利用提供科学依据。 |
| 关键词: 参考作物蒸散发 广西 喀斯特地貌 灌溉制度 Penman-Monteith模型 |
| DOI：10.13656/j.cnki.gxkx.20220616.003 |
| 投稿时间：2021-09-26修订日期：2022-01-26 |
| 基金项目:国家自然科学基金项目(41807012,42167038)，广西自然科学基金项目(2018GXNSFBA281136)和中央引导地方科技发展资金项目(桂科AD20238026)资助。 |
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| Study on the Applicability of Valiantzas Model in the Prediction of Reference Evapotranspiration in Guangxi |
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WANG Sheng1,2,3, YAN Yan2, HUANG Yuqing1,2, HU Baoqing2
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| (1.Administration Committee of Baise National Agricultural Sci-tech Zone, Baise, Guangxi, 533612, China;2.Key Laboratory of Environment Change and Resources Use in Beibu Gulf, Nanning Normal University, Ministry of Education, Nanning, Guangxi, 530001, China;3.South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, Guangdong, 510650, China) |
| Abstract: |
| Accurate calculation of Reference Evapotranspiration (ET0) is the basis of irrigation system design,water resources allocation and management.Based on the daily temperature,wind speed,relative humidity and sunshine duration data of 10 typical meteorological stations in karst and non-karst areas in Guangxi for 5 and a half years,the applicability of simplified Valiantzas models (corresponding to the absence of different meteorological factors) in Guangxi was systematically evaluated.Kling-Gupta Efficiency Coefficient (KGE),Nash-Sutcliffe Coefficient of Efficiency (NSE),Coefficient of determination (R2),Root Mean Square Error (RMSE) and Average Bias (PBIAS) were used as evaluation indexes.The results showed that Valiantzas-M1 model with the same meteorological factors as the FAO-56 Penman-Monteith (FAO-56 P-M) model has higher accuracy,and its NSE and RMSE were 0.796-0.841 and 0.557-0.641 mm/d,respectively.It was convenient for practical application and can replace the FAO-56 P-M model.When the wind speed was missing,the original Valiantzas-M2 model had a large error.The Valiantzas-M2-modify model modified by the average wind speed in Guangxi could improve the simulation accuracy of ET0 and reduce the error.NSE increased by 16.6%-17.4%,RMSE decreased by 24.9%-27.4%.When solar radiation and wind speed were missing,the RMSE values of Valiantzas-M3 model in karst and non-karst areas were 0.991 mm/d and 0.988 mm/d,respectively.When the relative humidity and wind speed were missing at the same time,the Makkink model was better than the Valiantzas-M5 model in simulating ET0.This study can provide a scientific basis for the efficient utilization of agricultural water resources in Guangxi with sparse meteorological stations and severe karst drought. |
| Key words: Reference Evapotranspiration Guangxi karst landscape irrigation schedule Penman-Monteith model |
