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[1]DUAN Wen-ming,MU Xing-min,GAO Peng,et al.Analysis on the Trend of Precipitation in Jialing River Basin Nearly 50 Years[J].Research of Soil and Water Conservation,2012,19(01):97-101.

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Analysis on the Trend of Precipitation in Jialing River Basin Nearly 50 Years

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 19 Number of periods: 2012 01 Page number: 97-101 Column: Public date: 2012-02-20

Title:: Analysis on the Trend of Precipitation in Jialing River Basin Nearly 50 Years

Author(s):: DUAN Wen-ming¹, MU Xing-min^1,2, GAO Peng^1,2, WANG Fei^1,2, BAI Hua²; 1. Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, Shaanxi 712100, China;
2. Institute of Soil and Water Conservation, Northwest A&F University, Yangling, Shaanxi 712100, China

Keywords:: Jailing River Basin; precipitation; spatio-temporal variation

CLC:: P333.1

DOI:: -

Abstract:: This paper analyzes the spatio-temporal variation of precipitation using the monthly precipitation data from 12 meteorological stations during the period of 1960—2009 based on geostatistics and time series analysis methods, which can serve as the convincing evidences for combating drought and flood, debris flow and other natural disasters. The results indicate that: the average annual precipitation is about 910.5 mm, which has a decreasing gradient from southeast to northwest in the Jialingjiang River Basin. The precipitation shows downward trend in the last 50 years in the catchment, and has periodical features of 21 and 35 years. The precipitation has a rainy-normal-drier period in the last 50 years. The precipitation presents seasonal dynamics during the whole year, and mainly concentrated in the period of May to September, accounting for approximately 80% of annual rainfall. In addition, precipitation in spring and autumn demonstrates decreasing trends. In summer, most stations show downward trends except Qujiang River with an increasing trend, however, there is no significant trend for precipitation in winter. Nearly fifty years, the majority of rainfall occurred in a normal year, the rainy year was more common than drier year. Through the study, there is a decreasing trend in annual precipitation, but it is relatively concentrated in the summer and autumn through the year. Therefore, we should take some measures to prevent the floods, soil erosion or other disasters in flood season and take some measures to prevent drought in spring and winter too.

References:: [1] 冯强.我国降水的时空变化与暴雨洪涝灾害[J].自然灾害学报, 1998, 7 (1):87-93.
[2] 丁永建, 叶佰生, 周文娟.黑河流域过去40 a来降水时空分布特征[J].冰川冻土, 1999, 21 (1):42-48.
[3] 褚健婷, 夏军, 许崇育, 等.海河流域气象和水文降水资料对比分析及时空变异[J].地理学报, 2009, 64 (9):1083-1092.
[4] 刘引鸽.陕北黄土高原降水的变化趋势分析[J].干旱区研究, 2007, 24 (1):49-55.
[5] 许炯心.人类活动和降水变化对嘉陵江流域侵蚀产沙的影响[J].地理科学, 2006, 26 (4):432-437.
[6] 陈桂亚, Clarke D.气候变化对嘉陵江流域水资源量的影响分析[J].长江科学院院报, 2007, 24 (4):14-18.
[7] 高鹏, 穆兴民, 王炜.长江支流嘉陵江水沙变化趋势及其驱动因素分析[J].水土保持研究, 2010, 17 (4):57-61.
[8] 向田恬, 陈华, 郭家力, 等.气候变化对嘉陵江流域降水变化影响分析[J].南水北调与水利科技, 2010, 8 (1):75-77.
[9] 许家琦, 舒红.降水数据空间插值的时间尺度效应[J].测绘信息与工程, 2009, 34 (3):29-30.
[10] 王文圣, 丁晶, 李跃清.水文小波分析[M].北京:化学工业出版社, 2005.
[11] 徐宗学, 张玲, 阮本清.北京地区降雨量时空分布规律分析[J].干旱区地理, 2006, 4 (2):186-192.
[12] Zbigniew W K, Alice R. Detection trend and other changes in hydrological data[M]. WMO/TD-No. 1013.Geneva, 2000.
[13] Olive J E. Monthly precipitation distribution. A comparative index[J]. The Professional Geographer, 1980, 32 (3):300-309.
[14] 穆兴民, 李靖, 王飞, 等.黄河天然径流量年际变化过程分析[J].干旱区资源与环境.2003, 17 (2):1-5.
[15] 魏淑秋.农业气象统计[M].福州:福建科学技术出版社, 1985.

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