| 青藏高原降水量·雨日变化趋势的分形研究 |
| |
| 引用本文： | 冯自立,罗隆诚.青藏高原降水量·雨日变化趋势的分形研究[J].安徽农业科学,2008,36(1):295-298. |
| |
| 作者姓名： | 冯自立 罗隆诚 |
| |
| 作者单位： | 1. 中国民航飞行学院空中交通管理学院,四川广汉,618307
2. 绵阳师范学院资源环境科学系,四川绵阳,621000;国家城市污水处理及资源化工程技术研究中心,四川锦阳,621000 |
| |
| 基金项目： | 中国气象局科研项目
,
绵阳师范学院重点科研基金联合资助项目 |
| |
| 摘 要： | 运用R/S分析法对青藏高原拉萨、托托河、甘孜等12台站的年降水量、年雨日进行分形研究。结果表明:年降水量、年雨日的总体变化趋势存在着十分明显的Hurst现象;年降水量、年雨日时间序列的长期相关性特征总体表现为持续性。年降水量的变化趋势既有减少趋势,也有增加趋势;年雨日的变化出现了完全"统一"的显著减少趋势;年雨日与年降水量的长期变化趋势不完全一致。
|
| 关 键 词： | 雨日 降水量 Hurst指数 分形 青藏高原 |
| 文章编号： | 0517-6611(2008)01-00295-04 |
| 修稿时间： | 2007年8月21日 |
Fractal Research on Changing Trends of Precipitation and Rain Day in Tibetan Plateau |
| |
| FENG Zi-li.Fractal Research on Changing Trends of Precipitation and Rain Day in Tibetan Plateau[J].Journal of Anhui Agricultural Sciences,2008,36(1):295-298. |
| |
| Authors: | FENG Zi-li |
| |
| Abstract: | The fractal research on annual precipitations and annual rain days of 12 meteorological stations such as Lhasa,Tuotuo River and Ganzi etc.in Tibetan plateau were conducted by R/S analysis.The results showed that the total change trends of annual precipitation and annual rain day had very obvious Hurst phenomena,and the long-term correlation characteristic between time sequences of annual precipitation and annual rain day showed to be durative on the whole.The change trends of annual precipitation included not only decreasing trend but also increasing trend,the change of annual rain day showed to be completely "unified" significant decreasing trend,and the long-term change trends of annual rain day and annual precipitation were not completely accordant. |
| |
| Keywords: | Rainy day Precipitation Hurst Index Fractal Tibetan plateau |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
