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当前位置: 首页 > 文章 > 黑河流域参考作物蒸散量与气象因素的相关关系研究 甘肃农业大学学报 2018 (1) 115-123
Position: Home > Articles > The correlation between reference crop evapotranspiration and meteorological factors in Heihe River Journal of Gansu Agricultural University 2018 (1) 115-123

黑河流域参考作物蒸散量与气象因素的相关关系研究

作  者：
朱璇浩;齐广平;康燕霞;马彦麟;史晓巍
单  位：
甘肃农业大学水利水电工程学院;河海大学水文水资源学院
关键词：
气象因素;Penman-Monteith;通径分析;主成分分析;相关关系
摘  要：
【目的】研究黑河流域参考作物蒸散量(ET_0)与气象因素间及各气象因素间的相关关系,精确估算和预测黑河流域ET_0.【方法】基于黑河流域17个气象站点1960-2014年逐日气象资料,在利用Penman-Monteith公式计算逐日ET_0的基础上,分析ET_0与气象因素的年际变化特征,将通径分析法和主成分分析法相结合,从线性关系和方差贡献2个角度综合探讨ET_0与气象因素间及各气象因素间的相关关系.【结果】近55a间黑河流域年均ET_0、平均温度和降水量呈增加趋势,平均相对湿度、平均风速和日照时数呈递减趋势.平均温度和平均风速间以及平均相对湿度、日照时数和降水量间线性关系显著,平均相对湿度主要受平均温度的主导影响;线性关系和方差贡献分析气象因素影响程度结果基本一致,影响程度排序:平均相对湿度>降水量>平均风速>日照时数>平均温度.【结论】单因素作用方面平均相对湿度为影响ET_0变化的主要因素,平均温度主导平均相对湿度的变化,多因素共同作用方面日照时数与降水量相组合是ET_0波动性变化的主导因素,多方面的共同作用造成黑河流域ET_0呈上下波动式的增加趋势.从不同角度综合分析能更全面探寻ET_0与气象因素间及各气象因素间的相关关系,为ET_0的变化特征提供科学依据.
译  名：
The correlation between reference crop evapotranspiration and meteorological factors in Heihe River
作  者：
ZHU Xuan-hao;QI Guang-ping;KANG Yan-xia;MA Yan-lin;SHI Xiao-wei;College of Water Resources and Hydropower Engineering,Gansu Agricultural University;College of Hydrology and Water Resources,Hohai University;
关键词：
meteorological factor;;Penman-Monteith;;path analysis;;principal component analysis;;mutual relations
摘  要：
【Objective】In order to estimating and forecasting the reference crop evapotranspiration in the Heihe River.【Method】Based on the daily meteorological data from 1960 to 2014 of 17 meteorological stations in the Heihe River,the daily ET_0 was calculated by using the Penman-Monteith formula,and change features of ET_0 were analyzed.Relying on the analysis of the linear relationship's path analysis and the variance analysis of principal component,the relationship was established between ET_0 with meteorological factors and meteorological factors.【Result】During 55 years,the average annual ET_0,mean temperature and precipitation show an increasing trend in the Heihe River Basin,and a decrease is observed in the average relative humidity,average wind speed and sunshine hours.A linear relationship is found betweenthe average temperature and average wind speed,the average relative humidity and sunshine hours and precipitation.The average relative humidity is mainly affected by the average temperature.The linear relationship and variance contribution analysis of meteorological factors have a similar affect.The effect degree orders as average relative humidity > precipitation > average wind speed > sunshine hours>the average temperature.【Conclusion】The average relative humidity is the main factor affecting the change of ET_0,the average temperature affects the change of average relative humidity.The combination of sunshine hours and precipitation is the dominant factor of ET_0 volatility change in the multi-factor common.The change of the Heihe River Basin ET_0 is fluctuated upward trend.It is suggested that comprehensive analysis can explore the relationship between ET_0 and meteorological factors,which provide the scientific basis for the change characteristics of ET_0.

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