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中国农学通报 ›› 2026, Vol. 42 ›› Issue (6): 164-170.doi: 10.11924/j.issn.1000-6850.casb2025-0931

• 资源·环境·生态·土壤·气象 • 上一篇    下一篇

基于Pettitt检验的赣抚平原灌区气象要素突变特征及关联性研究

曾佩(), 喻宏磊, 李玥康, 刘博懿()   

  1. 江西省灌溉试验中心站, 南昌 330201
  • 收稿日期:2025-11-16 修回日期:2026-02-06 出版日期:2026-03-25 发布日期:2026-03-30
  • 通讯作者:
    刘博懿,男,1993年出生,江西赣州人,工程师,硕士,研究方向:农田水利。通信地址:330201 江西省南昌市南昌县向塘镇银河东路309号,E-mail:
  • 作者简介:

    曾佩,男,1994年出生,江西宜春人,工程师,硕士,研究方向:农田水利。通信地址:330201 江西省南昌市南昌县向塘镇银河东路309号,E-mail:

  • 基金资助:
    江西水利科技项目(202526YBKT22); 江西水利科技项目(202526YBKT23); 江西水利科技项目(202425YBKT18)

Abrupt Change Characteristics of Meteorological Elements in Ganfupingyuan Irrigation Area Based on Pettitt Test and Its Correlation Study

ZENG Pei(), YU Honglei, LI Yuekang, LIU Boyi()   

  1. Jiangxi Center Station of Irrigation Experiment, Nanchang 330201
  • Received:2025-11-16 Revised:2026-02-06 Published:2026-03-25 Online:2026-03-30

摘要:

赣抚平原灌区作为江西省重要商品粮基地,其农业生产与生态平衡高度依赖气象要素节律性变化,明确其关键气象要素的突变规律与关联机制,可为灌区气候适应性管理提供科学支撑。本文基于该灌区1987—2024年长序列气象观测数据,采用Pettitt突变检验、线性倾向法及相关性分析等方法,系统探究气温、日照时数、降雨量和平均风速的突变特征、变化趋势及要素关联性。结果显示:年平均气温、年平均最高气温及年平均最低气温整体呈现上升趋势,且均在2007年发生显著突变,突变后升温速率明显加快,年平均最低气温突变后增幅达0.110℃/a;日照时数整体呈下降趋势,仅秋季在2012年出现显著突变,降幅达25.95%;降雨量无明显突变点,整体呈不显著上升趋势,夏季降雨量增加为主要贡献因素;平均风速在21世纪初发生显著突变,整体呈下降趋势,四季中夏、秋两季降幅更为明显。相关性分析显示,平均气温升高并非单一因素驱动,而是由平均最高气温与最低气温协同作用所致,且平均风速下降与上述3种气温升高均呈显著负相关,二者年份突变时间同步,证实风速下降是灌区气温升高的关键局部驱动因子。因此,赣抚平原灌区于研究期间的气候演变中,平均气温升高是最高气温与最低气温协同驱动、且受风速下降调控的耦合结果,突变同步性与要素关联规律可为局地气候适应性管理提供技术参考。

关键词: 赣抚平原灌区, pettitt检测, 气象要素, 突变特征, 相关性分析

Abstract:

As an important commodity grain base in Jiangxi Province, the agricultural production and ecological balance of Ganfupingyuan Irrigation Area are highly dependent on the rhythmic changes of meteorological elements. Clarifying the abrupt change laws and correlation mechanisms of its key meteorological elements can provide scientific support for the climate adaptability management of the irrigation district. Based on the long-series meteorological observation data from 1987 to 2024 in this irrigation district, this study systematically explored the abrupt change characteristics, variation trends and inter-element correlations of air temperature, sunshine duration, precipitation and average wind speed by adopting the Pettitt test, linear trend analysis and correlation analysis methods. The results showed that the annual average temperature, annual average maximum temperature and annual average minimum temperature exhibited an overall upward trend, with significant abrupt changes occurring in 2007. After the abrupt change, the warming rate accelerated significantly, and the annual average minimum temperature increased by 0.110℃/a. The sunshine duration showed an overall downward trend, with a significant abrupt change of 25.95% only in autumn 2012. There was no obvious abrupt change point in precipitation, and the overall trend was non-significantly upward, with the increase in summer precipitation being the main contributing factor. The average wind speed underwent a significant abrupt change at the beginning of the 21st century, showing an overall downward trend, and the decline was more pronounced in summer and autumn. Correlation analysis indicated that the increase in average temperature was not driven by a single factor but by the synergistic effect of average maximum temperature and average minimum temperature. Furthermore, the decrease in average wind speed was significantly negatively correlated with the increase in the above three temperature indices, and their abrupt change times were synchronized, confirming that the decrease in wind speed was a key local driving factor for the temperature rise in the irrigation district. Therefore, during the study period, the increase of average temperature in Ganfupingyuan Irrigation Area was a coupled result of the synergistic driving of maximum and minimum temperatures and the regulation of decreasing wind speed. The synchronization of abrupt changes and the correlation laws of elements can provide technical references for local climate adaptability management.

Key words: Ganfupingyuan Irrigation Area, Pettitt test, meteorological elements, abrupt change characteristics, correlation analysis