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| 渭河流域降水和气温的时空特征分析 | |
| 引用本文： | 何毅,王飞,穆兴民,白桦,蒋冲,李锐.渭河流域降水和气温的时空特征分析[J].水土保持通报,2012,32(4):102-105. |
| 作者姓名： | 何毅 王飞 穆兴民 白桦 蒋冲 李锐 |
| 作者单位： | 1. 西北农林科技大学资源环境学院,陕西杨凌,712100 2. 西北农林科技大学资源环境学院,陕西杨凌712100 中国科学院水利部水土保持研究所,陕西杨凌712100 3. 西北农林科技大学水利与建筑工程学院,陕西杨凌,712100 |
| 基金项目： | 中国科学院对外合作重点项目计划“渭河流域水环境问题综合治理对策研究”(GJHZ1018);荷兰科学研究组织(NOW):中荷联合主题研究项目(OND1339291);欧盟第六框架计划项目(EU FP6;037046);国家科技支撑计划项目(2006BAD09B00) |
| 摘 要： | 降水和气温等气候要素对农业生产具有显著影响。根据1957—2009年渭河流域内12个代表性气象站点53a的降水和气温实测资料,采用传统统计、经验正交函数分解(EOF分析)和小波分析等方法,讨论了渭河流域降水量和气温的空间分布特征,并分析了其周期变化特点。结果表明:(1)受大尺度天气系统影响,流域降水量和气温异常的一致性是主要特点,也存在南北差异和东西差异;(2)年降水量主要存在30a或更大的周期变化特征,而年平均气温、年平均最低气温和年平均最高气温主要存在29a或更大的周期变化特征。 |
| 关 键 词： | 气候变化 时空特征 渭河流域 |
| 收稿时间： | 6/9/2011 12:00:00 AM |
Temporal and Spatial Characteristics of Temperature and Precipitation in Weihe River Basin |
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| HE Yi,WANG Fei,MU Xing-min,BAI Hu,JIANG Chong and LI Rui.Temporal and Spatial Characteristics of Temperature and Precipitation in Weihe River Basin[J].Bulletin of Soil and Water Conservation,2012,32(4):102-105. | |
| Authors: | HE Yi WANG Fei MU Xing-min BAI Hu JIANG Chong and LI Rui |
| Institution: | 1,2(1.College of Resources and Environment,Northwest A & F University,Yangling,Shaanxi 712100,China;2.Institute of Soil and Water Conservation,Chinese Academy of Sciences and Ministry of Water Resources,Yangling,Shaanxi 712100,China;3.College of Water Resources and Architectural Engineering,Northwest A & F University,Yangling,Shaanxi 712100,China) |
| Abstract: | Climate factors including precipitation and temperature have significant effects on agricultural production.Traditional statistics,EOF analysis and wavelet analysis were applied to analyze the characteristics of periodic variations and spatial distribution of precipitation and temperature in this region based on data collected at the 12weather stations in Weihe River basin during 1957—2009.The results show that:(1)The precipitation and temperature in the basin is affected by larger scale weather systems.The abnormity of precipitation and temperature in Weihe River basin were simultaneous,and the abnormity of precipitation and temperature differed between south and north,and in the east and west.(2)Morlet wavelet transform indicated that the major periods for precipitation was about 30years or more,while the main periods for annual mean temperature and mean maximum temperature were about 29years or more. |
| Keywords: | climate change temporal and spatial characteristics Weihe River basin |
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