摘要
为了提高Prietley-Taylor(P-T)模型在江西省的适用性和精度,提高区域作物需水量估算精度和水资源优化配置水平,使用了江西省26个气象站1961-2010年逐日气象数据,以FAO Penman-Monteith(P-M)模型为标准,使用对P-T模型参数进行了全年率定(PT1)和分季率定(PT2),并对P-T模型模拟结果进行了评价和精度分析,并使用周边省份17个站点气象数据建立模型,对模型参数进行了空间插值。结果显示:全年率定参数α介于1.05~1.18之间,且参数呈现北部平原最高,西部山区较低的趋势。分季率定模式下,春季和夏季参数值较小,冬季最大,并呈现一定程度的高估。P-T模型两种率定方法在年尺度和月尺度上均呈现出了较好适用性,但t检验结果显示,分季率定模式数据一致性更高。PT2对P-T模型随季节变化的响应能力得到了增强,精度和适应性得到了提高,可用于在气象资料缺乏条件下江西省ET0的简化计算。
In order to improve the applicability and accuracy of Prietley-Taylor(P-T)models in Jiangxi Province and the regional crop water requirement estimation accuracy level and optimize the allocation of water resources,based on the 27 meteorological stations in Jiangxi province and neighboring provinces of 16 meteorological stations for 1961-2010 years the daily meteorological data in FAO Penman-Monteith(P-M)model as the standard,P-T model parameters of the annual rate(PT1)and quarter rate(PT2)were studied,and the simulation results of P-T model are analyzed and the accuracy evaluation.The results showed that the constant parameters of the annual rate were between 1.05 and 1.18,and the parameters showed the highest in the northern plain and the low in the western mountain area.The parameters of spring and summer are smaller,and the winter is the largest,with a little overestimated.The two calibration methods of P-T model showed good applicability on annual scale and monthly scale.However,t-test results show that the data of season based fixed mode is more consistent.PT2 has enhanced the responsiveness of P-T model to seasonal variation,and improved its accuracy and adaptability.It can be used for simplified calculation of ET0 under the condition of lack of meteorological data in Jiangxi Province.
作者
燕辉
吴立峰
鲁向晖
董建华
戴盼伟
YAN Hui;WU Li-feng;LU Xiang-hui;DONG Jian-hua;DAI Pan-wei(College of Agricultural Equipment Engineering,Henan University of Science and Technology,Luoyang 471000,China;State-province United Engineering Laboratory on Water Engineering Safety and Resources Efficient Utilization of Poyang Lake basin,Nanchang Institute of Technology,Nanchang 330099,China)
出处
《节水灌溉》
北大核心
2019年第12期88-94,101,共8页
Water Saving Irrigation
基金
国家自然科学基金项目(51709143,51741905)
江西省科技厅自然科学基金项目(20171BAB216051)
