| 青海湖地区降水变化趋势和突变分析 |
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| 引用本文： | 杨萍,王乃昂,张海峰,曹生奎.青海湖地区降水变化趋势和突变分析[J].青海大学学报,2013(5):69-73. |
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| 作者姓名： | 杨萍 王乃昂 张海峰 曹生奎 |
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| 作者单位： | [1]青海师范大学生命与地理科学学院,青海西宁810008 [2]兰州大学资源环境学院,甘肃兰州730000 |
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| 基金项目： | 国家自然科学基金项目（31060065）;教育部＂春晖计划＂合作科研项目（Z2011023,S2011008）;青海师范大学创新项目（1294） |
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| 摘 要： | 采用Mann-Kendall及滑动T检验法,对青海湖地区五个气象站1960-2007年降水逐月观测资料进行了分析.结果表明：青海湖地区降水量年、夏季微弱上升,秋季微弱下降,春季变动存在地区差异,但年、季降水变动趋势并不明显；降水量最大偏少期为20世纪70年代中期至80年代中期,最大偏多期为80年代中后期,2004年后降水量呈增加趋势；除春季有两次较强降水突变信号外,年和其他季节的突变信号均弱.降水量变化表现出明显的地区差异.
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| 关 键 词： | 降水变化 Mann-Kendall法 滑动T检验法 青海湖地区 |
Precipitation Change of Qinghai Lake Region |
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| YANG Ping,WANG Naiang,ZHANG Haifeng,CAO Shengkui.Precipitation Change of Qinghai Lake Region[J].Journal of Qinghai University(Natural Science),2013(5):69-73. |
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| Authors: | YANG Ping WANG Naiang ZHANG Haifeng CAO Shengkui |
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| Institution: | 1. College of Life and Geography Sciences, Qinghai Normal University,Xining 810008, China; 2. College of Resources and Environment Sciences, Lanzhou University, Lanzhou 730000, China) |
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| Abstract: | In this study, the data of monthly precipitation, observed by Gangcha, Tianjun, Chaka, Gonghe and Huangyuan meteorological stations, are used to analyze precipitation change in Qinghai Lake region from 1960 to 2007 using Mann - Kendall and MTI＂ methods. The results are as follows ： the tendency of its year and summer is increasing weakly and autumn is reducing slowly and spring has regional differences. It is the least from the middle of 1970s to the middle of 1980s and the most from 1986 to 1989. It has become more since 2004. The abrupt changing signal of precipitation is not obvious, except for an abrupt decrease and abrupt increase in spring around 1974 and 1983 respec- tively. There are different precipitation variations in different places. |
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| Keywords: | precipitation change Mann - Kendall MTT Qinghai Lake region |
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