Based on the daily precipitation data of 133 stations in Sichuan from 1961 to 2008, precipitation variation and its impacts are analyzed in this paper. Results indicate that during 1961-2008, the spatial distribution of the annual precipitation variation in Sichuan shows an increase-decrease-increase situation from west to east: increase in most parts of Ganzi and Liangshan, decrease in Aba and most parts of Sichuan Basin and increase in the northeastern part of the basin. The linear trend coefficient field in the spatial changes of the rainstorm days also displays an increase-decrease-increase situation from west to east: increase in most parts of Ganzi, Liangshan and Panzhihua, remarkable decrease in the western and central parts of the basin and significant increase in the northeastern part of the basin. Apart from some parts of the central and southern basin, the rainstorm intensity in the province tended to increase, and the trend in the northeastern part of the basin was notable. . The variation trend of the heavy rain days is close to that of the rainstorm, showing an increase-decrease-increase change from west to east. Except for some parts of Ganzi, the number of moderate and light rain days in most parts of Sichuan decreased. On the contrary, the number of days without rain increased greatly in most parts of the province, except for part of western Sichuan Plateau.
ZHOU Changyan, CEN Sixuan, LI Yueqing, PENG Guozhao, YANG Shuqun, PENG Jun
. Precipitation Variation and Its Impacts in Sichuan in the Last 50 Years[J]. Acta Geographica Sinica, 2011
, 66(5)
: 619
-630
.
DOI: 10.11821/xb201105005
[1] Chen Shuquan. Climate of the Sichuan. Beijing: China Meteorological Press, 1985. [陈淑全. 四川气候. 北京: 气象出版社, 1985.]
[2] Xu Yuhua. Climate of Southwest China. Beijing: China Meteorological Press, 1991. [徐裕华. 西南气候. 北京: 气象出版社, 1991.]
[3] Shao Yuankun, Shen Tongli, You Yong et al. Precipitation features of Sichuan Basin in the recent 40 decades. Journal ofSouthwest Agricultural University, 2005, 27(6): 749-752. [邵远坤, 沈桐立, 游泳等. 四川盆地近40 年来的降水特征分析. 西南农业大学学报, 2005, 27(6): 749-752.]
[4] Zhou Changyan, Li Yueqing, Peng Jun. The characteristics and variation of precipitation and water resource of Sichuan andChongqing Basin on the eastern side of the plateau. Chinese Journal of Atmospheric Sciences, 2006, 30(6): 1217-1226. [周长艳, 李跃清, 彭俊. 高原东侧川渝盆地降水与水资源特征及变化. 大气科学, 2006, 30(6): 1217-1226.]
[5] Chen Wenxiu. Analysis on the character of rainfall changing over Sichuan Basin in the 20th century. Journal of SichuanMeteorology, 2001, 21(1): 37-39. [陈文秀. 20 世纪四川盆地降水变化特征分析. 四川气象, 2001, 21(1): 37-39.]
[6] Liu Yan, Wang Qianqian, Cheng Zhengquan. Regional features of summer rainfall anomaly over Southwest China. Journalof Nanjing Institute of Meteorology, 2002, 25(1): 105-110. [刘燕, 王谦谦, 程正泉. 我国西南地区夏季降水异常的区域特征. 南京气象学院学报, 2002, 25(1): 105-110.]
[7] Zhu Yanfeng, Yu Rucong. Interannual variation of summer precipitation in the west of Sichuan Basin and its relationshipwith large-scale circulation. Chinese Journal of Atmospheric Sciences, 2003, 27 (6): 1045-1056. [朱艳峰, 宇如聪. 川西地区夏季降水的年际变化特征及与大尺度环流的联系. 大气科学, 2003, 27(6): 1045-1056.]
[8] Gong Daoyi, Han Hui. Extreme climate events in northern China over the last 50 years. Acta Geographica Sinica, 2004, 59(2): 230-238. [龚道溢, 韩晖. 华北农牧交错带夏季极端气候的趋势分析. 地理学报, 2004, 59(2): 230-238.]
[9] Zhai Panmao, Pan Xiaohua. Change in extreme temperature and precipitation over northern China during the second half ofthe 20th century. Acta Geographica Sinica, 2003, 58(suppl.): 1-10. [翟盘茂, 潘晓华. 中国北方近50 年温度和降水极端事件变化. 地理学报, 2003, 58(增刊): 1-10.]
[10] Easterling D R, Evans J L, Groisman P Y et al. Observed variability and trends in extreme climate events: A brief review.Bull. of the Ameri. Mete. Soci., 2000, 81(3): 417-425.
[11] Zhai Panmao, Ren Fumin, Zhang Qiang. Detection of trends in China's precipitation extremes. Acta Meteorologica Sinica,1999, 57(2): 208-216. [翟盘茂, 任福民, 张强. 中国降水极值变化趋势检测. 气象学报, 1999, 57(2): 208-216.]
[12] Yan Zhongwei. Geographic patterns of extreme climate changes in China during 1951-1997. Climatic and EnvironmentalResearch, 2000, 5(3): 267-272. [严中伟. 近几十年中国极端气候变化格局. 气候与环境研究, 2000, 5(3): 267-272.]
[13] Sun Fenghua, Yang Suying, Ren Guoyu. Decade variations of precipitation event frequency, intensity and duration in theNortheast China. Journal of Applied Meteorological Science, 2007, 18(5): 610-618. [孙凤华, 杨素英, 任国玉. 东北地区降水日数、强度和持续时间的年代际变化. 应用气象学报, 2007, 18(5): 610-618.]
[14] Liu Xiaoning. Climatic characteristics of extreme rainstorm events in China. Journal of Catastrophology, 1999, 14(1):54-59. [刘小宁. 我国暴雨极端事件的气候变化特征. 灾害学, 1999, 14(1): 54-59.]
[15] Hu Haoran, Mao Xiaoliang, Liang Ling. Temporal and spatial variations of extreme precipitation events of flood seasonover Sichuan Basin in last 50 years. Acta Geographica Sinica, 2009, 64(3): 278-288. [胡豪然, 毛晓亮, 梁玲. 近50 年四川盆地汛期极端降水事件的时空演变. 地理学报, 2009, 64(3): 278-288.]
[16] Wang Miaolin. Study on water resources security problem in the Minjiang River valley. Sichuan Water Conservancy, 2005,(4): 32-34. [王渺林. 岷江流域水资源安全问题探讨. 四川水利, 2005, (4): 32-34.]
[17] Shi Chengcang, Tu Jun. Remote sensing monitory study on land desertification in Ruoergai Plateau of Sichuan Provinceduring 40 years in Southwest China. Journal of Agricultural Sciences, 2009, 22(6): 1662-1664. [石承苍, 凃军. 近40 年四川省若尔盖高原土地荒漠化遥感监测研究. 西南农业学报, 2009, 22(6): 1662-1664.]
[18] Wang Run. Remote sensing analysis on land desertification of the Hongyuan meadow [D]. Chongqing: SouthwestAgricultural University, 2005. [王润. 红原草地荒漠化变化遥感分析. 重庆: 西南农业大学硕士论文, 2005.]
[19] Luo Guidong. Studies on features of climate variations in Dazhou in recent 50 years. Plateau and Mountain MeteorologyResearch, 2008, 28(3): 72-75. [罗贵东. 达州近50 年气候变化特征分析. 高原山地气象研究, 2008, 28(3): 72-75.]
[20] Yu Shuhua, Gao Wenliang. Characteristic analysis of the mud-rock flow and land slip in heavy disaster area on May 12thWenchuan Earthquake in Sichuan Province. Plateau and Mountain Meteorology Research, 2008, 28(2): 62-67. [郁淑华, 高文良.“5.12”汶川特大地震重灾区泥石流滑坡气候特征分析. 高原山地气象研究, 2008, 28(2): 62-67.]
