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中国农学通报 ›› 2023, Vol. 39 ›› Issue (17): 72-78.doi: 10.11924/j.issn.1000-6850.casb2022-0508

• 资源·环境·生态·土壤·气象 • 上一篇    下一篇

1971—2020年贵州从江县参考作物蒸散量变化特征及成因分析

文建川1(), 梁平2(), 廖育玲1, 吴慧1, 董文韬2   

  1. 1从江县气象局,贵州黔东南 557400
    2黔东南州气象局,贵州黔东南 556000
  • 收稿日期:2022-06-17 修回日期:2022-08-09 出版日期:2023-06-15 发布日期:2023-06-12
  • 通讯作者: 梁平,女,1972年出生,贵州凯里人,正高,本科,主要从事农业气候和应用气象服务方面的工作。通信地址:556000 贵州省凯里市桐荫坪路45号 黔东南州气象局,Tel:0855-8505001,E-mail:liangping_0714@163.com
  • 作者简介:

    文建川,女,1994年出生,贵州榕江人,助理工程师,硕士,研究方向:综合气象服务。通信地址:557400 贵州省从江县丙妹镇牛堂路77号,Tel:0855-6412258,E-mail:

  • 基金资助:
    贵州省科技计划项目“贵州蓝莓花期灰霉病发生发展气象学机制及流行规律研究”(黔科合支撑(2018)2360); 贵州省气象局科研业务项目(黔气科登[2022]04-12号)

Variation Characteristics and Causes Analysis of Reference Crop Evapotranspiration in Congjiang County of Guizhou Province from 1971 to 2020

WEN Jianchuan1(), LIANG Ping2(), LIAO Yuling1, WU Hui1, Dong Wentao2   

  1. 1Congjiang County Meteorological Bureau, Qiandongnan, Guizhou 557400
    2Qiandongnan Prefecture Meteorological Bureau, Qiandongnan, Guizhou 556000
  • Received:2022-06-17 Revised:2022-08-09 Online:2023-06-15 Published:2023-06-12

摘要:

深入分析了从江县参考作物蒸散演变趋势并探明其变化成因,以期为当地农田水资源管理提供依据。运用Penman-Monteith模型估算贵州省从江县1971—2020年的逐日参考作物蒸散量ET0,并利用小波分析和通径分析方法分析ET0周期变化特征及成因。结果表明:1971—2020年,从江县年均ET0为997.9 mm,以10.11 mm/10 a的递减速率显著下降,夏季ET0同样呈显著下降趋势;年ET0序列呈现以28年为主周期进行增多-减少循环交替的周期变化,其中1983—1991年和2003—2010年这2个时间段ET0偏多,春、夏季ET0的年代际变化也表现为增多-减少的趋势;日照时数是影响从江县ET0整体下降的主要因素。

关键词: 参考作物蒸散, Penman-Monteith模型, 小波分析, 通径分析

Abstract:

The authors deeply analyzed the evolution trend of reference crop evapotranspiration (ET0) and influencing factors in Congjiang County, aiming to provide a basis for the management of farmland water resources. The daily ET0 in Congjiang County from 1971 to 2020 were analyzed by Penman-Monteith model, and then the periodic variation characteristics and the influence of climate factors on the ET0 were discussed by wavelet analysis and path analysis. The results showed that: from 1971 to 2020, the average annual ET0 of Congjiang County was 997.9 mm, which decreased significantly with a change rate of 10.11 mm/10 a, and the ET0 also showed a significantly decreasing trend in summer. The annual average ET0 showed an increasing-decreasing periodic variation alternating with a major cycle of 28 years, in which, the ET0 was high during 1983 to 1991 and 2003 to 2010, and the interdecadal change of ET0 in spring and summer also showed increasing-decreasing trends; sunshine hour was the main factor affecting the overall decline of ET0 in Congjiang County.

Key words: reference crop evapotranspiration, Penman-Monteith model, wavelet analysis, path analysis