主办单位:中国气象局沈阳大气环境研究所
国际刊号:ISSN 1673-503X
国内刊号:CN 21-1531/P

气象与环境学报 ›› 2022, Vol. 38 ›› Issue (1): 48-56.doi: 10.3969/j.issn.1673-503X.2022.01.007

• 论文 • 上一篇    下一篇

黄河流域蒸散发与气温和降水以及风速的相关性分析

谷同辉1(),管晓丹1,2,*(),高照逵1,3,黄小倩1,郭书扬1   

  1. 1. 兰州大学大气科学学院, 半干旱气候变化教育部重点实验室, 甘肃 兰州 730000
    2. 西部生态安全省部共建协同创新中心, 甘肃 兰州 730000
    3. 西南大学地理科学学院, 重庆 400715
  • 收稿日期:2021-06-21 出版日期:2022-02-28 发布日期:2022-03-02
  • 通讯作者: 管晓丹 E-mail:guth17@lzu.edu.cn;guanxd@lzu.edu.cn
  • 作者简介:谷同辉, 男, 1999年生, 在读硕士研究生, 主要研究方向为黄河流域蒸散发变化, E-mail: guth17@lzu.edu.cn
  • 基金资助:
    国家自然科学基金(42041004);国家自然科学基金(41722502);国家自然科学基金创新研究群体(41521004);中国科学院战略性先导科技专项资助(XDA2006010301);兰州大学中央高校基本科研业务费专项资金项目(lzujbky-2019-kb30)

Correlation analysis of evapotranspiration with air temperature, precipitation, and wind speed over the Yellow River Basin

Tong-hui GU1(),Xiao-dan GUAN1,2,*(),Zhao-kui GAO1,3,Xiao-qian HUANG1,Shu-yang GUO1   

  1. 1. College of Atmospheric Sciences, Lanzhou University, Key Laboratory of Semi-Arid Climate Change, Ministry of Education, Lanzhou 730000, China
    2. Collaborative Innovation Center for Western Ecological Safety, Lanzhou 730000, China
    3. School of Geographic Sciences, Southwest University, Chongqing 400715, China
  • Received:2021-06-21 Online:2022-02-28 Published:2022-03-02
  • Contact: Xiao-dan GUAN E-mail:guth17@lzu.edu.cn;guanxd@lzu.edu.cn

摘要:

黄河流经我国干旱半干旱地区,其流域蒸散发变化对当地的生态安全和经济发展尤其重要。本文利用欧洲中期天气预报中心第五代再分析产品(ERA5)定量分析了1979-2020年黄河流域蒸散发的时空变化特征,并结合气温、降水和风速数据,对黄河流域蒸散发与3种气候因子进行了相关性分析。结果表明:黄河流域蒸散发在1979-2020年呈波动下降趋势,空间分布差异明显,源区附近蒸散发上升,上游的干旱区附近蒸散发基本不变,而中游和下游地区主要呈现下降趋势。1979-2020年黄河流域气温持续上升,降水呈波动下降趋势,风速呈上升趋势。对黄河流域蒸散发与气候因子的相关性分析表明,蒸散发与气候因子的相关性空间差异较为明显,蒸散发与气温、风速呈负相关,与降水呈正相关的区域占流域的较大部分;而在复相关性方面,黄河流域大部分地区蒸散发与气候因子的相关性较强,其中以流域上游的干旱区附近复相关性最强。研究黄河流域不同地区蒸散发与气候因子的相关性可为黄河流域水资源的开发管理和区域气候调节提供科学参考。

关键词: 黄河流域, 蒸散发, 气温, 降水, 风速

Abstract:

The Yellow River flows through the arid and semi-arid areas in China, and the variation of the evapotranspiration over the Yellow River Basin is particularly important for the local ecological security and economic development.Based on the ERA5 reanalysis data, we quantitatively analyzed the spatiotemporal variation of evapotranspiration in the Yellow River Basin from 1979 to 2020.In combination with observational data of temperature, precipitation, and wind speed, we also conducted the correlation analysis between evapotranspiration and three climatic factors.The results showed that the evapotranspiration over the Yellow River Basin has a decreasing trend with fluctuations from 1979 to 2020 and a large difference in its spatial distribution.The evapotranspiration increases near the source region, varies hardly near the arid regions in the upper reaches and decreases in the middle and lower reaches.Air temperature over the Yellow River Basin continues to increase from 1979 to 2020, meanwhile, the precipitation decreases with fluctuations, and wind speed has an increasing trend.The correlation analysis between evapotranspiration and climatic factors over the Yellow River Basin indicates that their correlations have obvious spatial differences.The evapotranspiration is negatively correlated with air temperature and wind speed and is positively correlated with precipitation over most areas in the Yellow River Basin.In terms of the multiple correlations, the correlations between evapotranspiration and climatic factors are strong in most areas of the basin, especially in the arid areas of the upper reaches.This study can provide scientific reference for the development and management of water resources and regional climate regulation over the Yellow River Basin.

Key words: The Yellow River Basin, Evapotranspiration, Temperature, Precipitation, Wind speed

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