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 Ｎ Ｏ Ａ Ａ／ Ａ Ｖ Ｈ Ｒ Ｒ 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、图形转换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 个垂直带各自建立子带模型， 加权后获得流域模拟模型预测结果表明，
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
出处
《冰川冻土》
CSCD
北大核心
1999年第3期264-268,共5页
Journal of Glaciology and Geocryology
