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| 近50年来黄河源区水文要素周期性分析及模拟 | |
| 引用本文： | 王军德,胡想全,李玉龙,肖栋,程玉菲.近50年来黄河源区水文要素周期性分析及模拟[J].节水灌溉,2009(3). |
| 作者姓名： | 王军德 胡想全 李玉龙 肖栋 程玉菲 |
| 作者单位： | 1. 甘肃省水利科学研究院,兰州,730000 2. 河北省环境地质研究院,石家庄,050021 3. 兰州大学大气科学学院,兰州,730000 |
| 摘 要： | 寒区水文过程是寒区生态系统中的重要环节之一,水热状况将直接决定高寒地区的生态环境状况.用滑动趋势法和墨西哥帽状小波变化分别获取了研究区域近50年来气候变化的年际年代变化及其周期分析,基于青藏高原太阳辐射平衡已有成果,结合联合国粮农组织推荐的彭曼-蒙蒂斯模型,对于达日县可能蒸散发进行了数值模拟.得出以下主要结论:近50年来达日县降水年增加率为0.557 mm/a,而该县最大可能蒸散发量的年增加率为0.132 mm/a,气候总体趋势是由干旱向湿润方向发生转变;达日县年气温序列主要呈现20 a、15 a、7 a和5 a的周期振荡,年降水序列表现为15～20 a和7～8 a的周期振荡;近20年来可能蒸散发呈递减的趋势,汛期序列递减率为0.046 7 mm/a,冬春序列递减率为0.108 4 mm/a. |
| 关 键 词： | 黄河源区 水文要素 周期 模拟 |
Simulation and Periodicity Analysis of Hydrological Factors in the Source Region of Yellow River in Recent 50 Years |
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| WANG Jun-de , HU Xiang-quan , LI Yu-long , XIAO Dong , CHENG Yu-fei.Simulation and Periodicity Analysis of Hydrological Factors in the Source Region of Yellow River in Recent 50 Years[J].Water Saving Irrigation,2009(3). | |
| Authors: | WANG Jun-de HU Xiang-quan LI Yu-long XIAO Dong CHENG Yu-fei |
| Institution: | 1.Gansu Research Institute for Water Conservancy;Lanzhou 730000;China;2.Environmental Geology Perambulation Academy of Hebei Province;Shijiazhuang 050021;3.College of Atmospheric Sciences;Lanzhou University;China |
| Abstract: | Hydrologic process is one important part of ecological system and climatic system in cold region.Hydrothermal condition directly determines the status of the ecological environment in cold region.Using sliding trend method and Mexican Hat Wavelet method,annual and decadal climate change of the studying region in recent 50 years is researched.Based on the research results of solar radiation balance of Tibetan Altiplano,combined with the Penman-Monteith model recommended by FAO,the numerical simulation of the... |
| Keywords: | the source region of yellow river hydrological factors periodicity analysis simulation |
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