长江科学院院报 ›› 2025, Vol. 42 ›› Issue (1): 57-63.DOI: 10.11988/ckyyb.20230949

• 水资源 • 上一篇    下一篇

岷江源区百年来汛期降水气候特征

胡文斌1(), 陈治霖2, 刘建成1, 刘欢2, 唐亚1,3()   

  1. 1 四川大学 建筑与环境学院,成都 610065
    2 黄龙国家级风景名胜区管理局,四川 阿坝藏族羌族自治州 623300
    3 四川大学 山区河流保护与治理国家重点实验室,成都 610065
  • 收稿日期:2023-08-31 修回日期:2023-11-01 出版日期:2025-01-01 发布日期:2025-01-01
  • 通信作者:
    唐亚(1963-),男,贵州盘州人,教授,博士,研究方向为环境生态学。E-mail:
  • 作者简介:

    胡文斌(1992-),男,陕西铜川人,工程师,硕士,研究方向为气候与环境变化。E-mail:

  • 基金资助:
    黄龙风景名胜区管理局项目(22H1204); 国家自然科学基金项目(41929002)

Characteristics of Flood Season Precipitation over the Past Century in the Headwater Region of Minjiang River

HU Wen-bin1(), CHEN Zhi-lin2, LIU Jian-cheng1, LIU Huan2, TANG Ya1,3()   

  1. 1 College of Architecture and Environment, Sichuan University, Chengdu 610065, China
    2 Huanglong National Scenic Area Administration, Aba 623300, China
    3 State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu 610065, China
  • Received:2023-08-31 Revised:2023-11-01 Published:2025-01-01 Online:2025-01-01

摘要:

掌握岷江源区汛期降水的气候特征对补充长江上游流域气象水文研究和服务当地生态环境建设有重要意义。基于岷江源区的四川省松潘县降水数据,利用树轮气候学和气候统计学方法分析了该区域1901—2014年汛期(5—9月份)降水的变化特征。结果表明:① 树木径向生长和CRU数据均与松潘气象站汛期降水量显著相关,树木年轮数据能较好提升CRU数据质量,以这两种数据建立多元回归方程可以较好地重建过去百年来的汛期降水量;②汛期降水贡献了当地年降水量的72%,百年来气候倾向率为-10.7 mm/(100 a),无明显减少趋势;③汛期降水变化稳定,无显著性突变发生,存在35~37、15~20、10~11 a的周期性,有利于降水的长期气候预测。研究成果补充了岷江源区的气象水文数据并为流域生态环境研究提供了有价值的科学数据。

关键词: 降水特征, 树木年轮, 汛期, 松潘, 岷江源区

Abstract:

Understanding the climatic characteristics of flood season precipitation in the headwater region of Minjiang River is crucial for advancing meteorological and hydrological research and ecological conservation in the upstream of the Yangtze River. Based on the tree-ring-revealed precipitation data in Songpan County of Sichuan Province, we investigated the flood season (May-September) precipitation variation from 1901 to 2014 using dendroclimatology and climatological statistics methods. Results indicated that: 1) Tree radial growth and CRU (Climatic Research Unit) data were significantly correlated with flood season precipitation, and precipitation over the past century could be well reconstructed using multiple regression equations as tree-ring data improves CRU data quality. 2) Flood season precipitation contributed about 72% of annual precipitation; the climatic tendency of precipitation was -10.7 mm/century, showing insignificant decrease. 3) Flood season precipitation was stable with no significant abrupt changes over the past century, but with a primary periodicity of 35-37 years and multiple time scale periods of 15-20 and 10-11 years. The research findings offer valuable meteorological information for ecological research and regional development in the headwater region of Minjiang River.

Key words: precipitation characteristics, tree ring, flood season, Songpan, Minjiang River headwater

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