The Trend and Influencing Factors of Potential Evapotranspiration in the Yellow River

摘要：

　　Based on the Penman-Monteith formula recommended by the World Food and Agriculture Organization (FAO) and the Mann-Kendall trend test method,the variation trend of potential evapotranspiration in the Yellow River Basin from 1952 to 2014 is analyzed.The results showed that the potential evapotranspiration of 43.3% of the 90 meteorological stations in the Yellow River Basin showed a significant upward trend.30% of the stations showed a significant downward trend,and 26.7% of the stations had no obvious trend of change.In all the secondary areas of water resources,the stations above Longyangxia are basically marked upward.The Longyangxia to the northern part of Lanzhou,the Longmen to the east of Sanmenxia and the Sanmenxia to Huayuankou are all significant descending sites.The change trend of the sites below the Huayuankou is not obvious.In other partition three kinds of sites are distributed.Through the correlation analysis,it is found that the increase of temperature has a great influence on the stations where the potential evapotranspiration is significantly increased,and the decrease of wind speed is the main reason for the significant decrease of potential evapotranspiration in some stations.

作者: Yanyu Dai Fan Lu Kui Zhu Xinyi Song Yiran Xu

作者单位: Water Resources Institute,China Institute of Water Resources and Hydropower Research,Beijing 100038, Water Resources Institute,China Institute of Water Resources and Hydropower Research,Beijing 100038, School of Resources and Geosciences,China University of Mining and Technology,Xuzhou 221116,China

会议类型: 国际会议

会议名称: 2018 International Symposium on Water System Operations(ISWRSO 2018)(2018年水资源系统及调度国际研讨会)

会议地点: 北京

会议语种:英文

页码: 1-5

在线出版日期: 2018-10-12（万方平台首次上网日期，不代表论文的发表时间）