| 中国西部大尺度流域建立分带式融雪径流模拟模型 |
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| 引用本文： | 王建,李文君.中国西部大尺度流域建立分带式融雪径流模拟模型[J].冰川冻土,1999,21(3):264-268. |
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| 作者姓名： | 王建 李文君 |
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| 作者单位： | 中国科学院兰州冰川冻土研究所!甘肃兰州730000 |
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| 摘 要： | 针对中国西部大尺度流域利用遥感信息进行的融雪径流模拟模型建立过程，提供以数字地形因子分析为手段的分区，分带方法。在ＮＯＡＡ／ＡＶＨＲＲ卫星云图为主要监测信息源的前提下，应用支持软件，解决了图像纠正，图形转为图像后再与图像匹配等问题。同时，根据研究得出雪象元之阈值，使用监督分类的训练样本方法统计出流域内雪盖面积及各带的雪盖面积百分比。作为应用和检验，对黄河上游的曲什安流域进行样本操作，分３个垂直带各
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| 关 键 词： | 融雪径流模拟 分区 图像处理 径流 流域 |
Establishing Simulated Model of Snowmelt Runoff for Large Scale Basin in Western China |
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| WANG Jian,LI Wen jun.Establishing Simulated Model of Snowmelt Runoff for Large Scale Basin in Western China[J].Journal of Glaciology and Geocryology,1999,21(3):264-268. |
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| Authors: | WANG Jian LI Wen jun |
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| Abstract: | In this paper, a process for establishing snowmelt runoff simulation model in large scale basin in the western China was introduces in detail Various zones together with zoning method are given based on an analysis of digital terrain factors Using IDRISIW supporting software, the problems are solved in image correcting and matching between image and image which is transformed from vector picture At the same time, the threshold values of snow pixes are given The percentage of snow cover in different zones and total snow cover in the basin is counted The sample operation was carried out in Qushen'an basin of the upper Yellow River for applicating and testing The sub zone models are established in three vertical zones, and the simulated model of snowmelt runoff in the basin is generated through weighting The predicted result shows that the method is practical and has the characteristics of fast monitoring |
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| Keywords: | snowmelt runoff simulation zoning image processing |
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