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	参考作物需水量计算方法在纵向岭谷区的应用对比
其他题名	Comparison Applying of Reference Crop Evapotranspiration Computing Method in the Longitudinal Range Gorge Region
	顾世祥 1; 李远华 2; 何大明 3; 崔远来 1
ISSN	1672-3317
出版年	2007
卷号	26 期号:4 页码:21-27
中文摘要	利用纵向岭谷区内58个典型站点1971-2000年逐月气象资料,以及昆明、元江、大理、景洪、保山等5个站点建站至2000年逐日气象资料,从逐日、月及年的不同时间尺度,以Penman Montieth方程计算结果为标准,分析修正Penman法、Priestley Taylor、Hargreaves等不同方法计算参考作物腾发量的适用性。在月和年时段上,修正Penman法较标准值偏小1%-19%,3-10月份平均误差小于6%,各流域之间存在一定差异。不同水文频率年Priestley Taylor和Hargreaves公式计算的逐日ET_0,都不同程度地比标准值小,昆明、保山、大理等半干旱或半湿润地区,Priestley Taylor公式计算结果更接近于标准值,平均误差11%-16%左右;景洪等湿润地区Hargreaves公式与标准值误差最小,为15%左右;但接近干旱区的元江则2种方法的结果都存在较大差异,相对误差大于25%;各月ET0的变异系数是Priestley Taylor大于Hargreaves公式,且绝大多数月份小于0.20;不同天气类型时Priestley Taylor计算精度变化大,晴和多云天气情况下的误差小于16.3%,阴雨天则误差比Hargreaves公式大,后者的计算精度在各种天气条件下较稳定;误差在年内的分布是7-8月最小,年初和年末最大,变化趋势与修正Penman法的对比结果相同。各种方法的ET_0计算结果与标准值的相关系数均大于0.80。
英文摘要	Based on the monthly meteorological data from 1971 to 2000 of 58 stations in the Longitudinal Range Gorge Region(LRGR),and daily data of Kunming,Yuanjiang,Dali,Jinghong,and Baoshan from 1950’ to 2000,using Penman Montieth Formula compute crop reference evapotranspiration(ET_0) at daily,monthly and yearly dimension as the criteria.At Monthly and yearly dimension,the difference between modify Penman and Penman Montieth Formula is 1%~19%,and the latter value is larger.During the period from March to October,the relative error is less 6%,but differently at watersheds.In vary hydrological frequency year,the compute value by Priestley Taylor and Hargreaves is less than the criteria.In semi-arid and semi-wetness regional such as Kunming,Baoshan,and Dali,the Priestley Taylor method is much closer to Penman Montieth Formula does,and the discrepancy is 11%~16%.In Jinghong which belongs to the humidity area,the discrepancy of Hargreaves method is lower about 15%.In Yuanjiang station which near the edge of arid region,all the methods is not well,the error is much than 25%.The Variability of ET_0 compute by Hargreaves is less than Priestley Taylor method,both methods the value is lower than 0.20.In every kind of daily weather,the calculate precision of Priestley Taylor is higher than Hargreaves,and the ET_0 discrepancy in sunshine and cloudy is less than 16.3%,and the result is reverse at rainy.For all the methods,the least compute discrepancy is July and August in seasonal,but January and December is the worst.The relative coefficient between Penman Montieth Formula and Modify Penman,Priestley Taylor or Hargreaves is higher than 0.80.
中文关键词	参考作物需水量 ; 计算方法 ; 对比 ; Montieth方程 ; 纵向岭谷
英文关键词	Penman crop reference evapotranspiration computing method comparative analyze Penman Montieth Formula the Longitudinal Range Gorge Region （LRGR）
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY
WOS研究方向	Agriculture
CSCD记录号	CSCD:2968702
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/221126
作者单位	1.武汉大学, 水资源与水电工程科学国家重点实验室, 武汉, 湖北 430072, 中国; 2.水利部农村水利司, 北京 100053, 中国; 3.云南大学亚洲国际河流中心, 昆明, 云南 650091, 中国
推荐引用方式 GB/T 7714	顾世祥,李远华,何大明,等. 参考作物需水量计算方法在纵向岭谷区的应用对比[J],2007,26(4):21-27.
APA	顾世祥,李远华,何大明,&崔远来.(2007).参考作物需水量计算方法在纵向岭谷区的应用对比.,26(4),21-27.
MLA	顾世祥,et al."参考作物需水量计算方法在纵向岭谷区的应用对比".26.4(2007):21-27.