[1]胡文斌a,乔 雪b,c,等.基于降水特征的华西雨屏地理范围界定[J].山地学报,2023,(5):662-675.[doi:10.16089/j.cnki.1008-2786.000778]
　HU Wenbina,QIAO Xueb,c,et al.Geographic Extent of the West China Rain Zone Determined by Precipitation Characteristics[J].Mountain Research,2023,(5):662-675.[doi:10.16089/j.cnki.1008-2786.000778]
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基于降水特征的华西雨屏地理范围界定
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《山地学报》[ISSN:1008-2186/CN:51-1516]

卷:
期数:
2023年第5期
页码:
662-675
栏目:
山地环境
出版日期:
2023-11-15

文章信息/Info

Title:
Geographic Extent of the West China Rain Zone Determined by Precipitation Characteristics
文章编号:
1008-2786-(2023)5-662-14
作者:
胡文斌1a; 乔 雪1b;  1c; 陈科艺2; 唐 亚1a; 1c*
(1. 四川大学 a. 建筑与环境学院; b. 新能源与低碳技术研究院; c. 水力学与山区河流开发保护国家重点实验室, 成都 610065; 2. 成都信息工程大学 大气科学学院,成都 610225)
Author(s):
HU Wenbin1a;  QIAO Xue1b;  1c;  CHEN Keyi2;  TANG Ya1a;  1c*
(1. a. College of Architecture and Environment; b. Institute of New Energy and Low-Carbon Technology; c. State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu 610065, China; 2. School of Atmospheric Sciences, Chengdu University of Information Technology, Chengdu 610225, China)
关键词:
华西雨屏;  气候特征;  生态建设;  降水分布;  四川盆地
Keywords:
the West China Rain Zone;  climatic characteristics;  ecological construction;  precipitation distribution;  the Sichuan basin
分类号:
P942; P462
DOI:
10.16089/j.cnki.1008-2786.000778
文献标志码:
A
摘要:
华西雨屏位于四川盆地向青藏高原的过渡区域,是中国西部年降水量的高值区之一,具有重要的生态服务价值,明确其地理范围有助于区域生态环境保护、山区发展和灾害防治。本文基于1975—2014年地面降水数据和2010—2019年CMORPH卫星降水数据,通过计算降水量和降水频次的空间距平值及应用空间聚类分析方法,分析了华西雨屏带与周边地区的降水差异,首次界定了华西雨屏的地理范围。结果表明:(1)华西雨屏带的整体范围北起广元市嘉陵江附近,沿四川盆地西部边缘山地及山前平原逆时针向南,止于宜宾市中东部,其降水量和降水频次都明显高于周边地区;(2)华西雨屏带由核心区、南支区和北支区组成,核心区位于雅安—峨眉山地区,即狭义华西雨屏区,南支区主要在冬半年表现出较高的降水量和降水频次,北支区在7—9月因多发暴雨而降水量偏高,南、北两支均是周期性的“准雨屏带”;(3)华西雨屏带降水具有明显的时空差异性,在研究华西雨屏带气候及相关生态环境问题时应注意区分季节和地区。本研究能提高人们对华西雨屏的认识并为区域生态环境保护和发展提供科学依据。
Abstract:
The West China Rain Zone(WCRZ)is described by scholars as a strip of transition zone of precipitation extended approximately from the western edge of the Sichuan basin to the Qinghai-Tibet Plateau. WCRZ is one of the high-value areas of annual precipitation in western China, with important ecological service merits. Defining its geographic range can help regional ecological environmental protection, mountain development and disaster prevention and control.
In this paper, it initiatively defined the geographical boundary of WCRZ according to precipitation records collected at meteorological observations from 1975 to 2014 and CMORPH satellite data from 2010 to 2019. It analyzed the precipitation differences between WCRZ and its surrounding areas by calculating the spatial anomaly of precipitation values and precipitation frequency, and applying spatial clustering analysis.
It found(1)the overall extent of WCRZ started in the north near the Jialingjiang River in Guangyuan city; immediately it run counterclockwise southward along mountains and piedmont plains on the western edge of the Sichuan basin, and ended in the east-central part of Yibin city, where the precipitation and its frequency were significantly higher than those in the surrounding areas.(2)WCRZ consisted of a core area, a southern branch area and a northern branch area, with the core area located in the Ya'an-Mount Emei area, i.e., WCRZ sensu stricto; in the southern branch area it had high precipitation and precipitation frequency in winter half years, while in the northern branch area high precipitation resulted from heavy rainstorms from July to September; the southern and northern branches were both periodic quasi-rain zone.(3)Precipitation in WCRZ had obvious spatial-temporal variability, and any scientific attention to the climate and related ecological and environmental issues in WCRZ should be aware of the spatial-temporal differentiation in connection with seasons or regions.
This study gives an insight into WCRZ and provides scientific basis for regional ecological conservation and development.

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备注/Memo

备注/Memo:
收稿日期(Received date): 2023-03-29; 改回日期(Accepted date):2023-10-20
基金项目(Foundation item): 国家自然科学基金(41929002)。[National Natural Science Foundation of China(41929002)]
作者简介(Biography): 胡文斌(1992-),男,陕西铜川人,硕士研究生,主要研究方向:气候与环境变化。[HU Wenbin(1992-), male, born in Tongchuan, Shaanxi province, M.Sc. candidate, research on climate and environmental change] E-mail: hwb_hj@163.com
*通讯作者(Corresponding author): 唐亚(1963-),男,贵州盘州人,博士,教授,主要研究方向:环境生态学。[TANG Ya(1963-), male, born in Panzhou, Guizhou province, Ph.D., professor, research on environmental ecology] E-mail: tangya@scu.edu.cn
更新日期/Last Update: 2023-09-30