Watershed modeling using land classifications
Watershed modeling using land classifications
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DOI：
10.1029/92wr01819
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发表时间：
1992-12
影响因子：
5.4
通讯作者：
G. Kite;N. Kouwen
中科院分区：
文献类型：
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作者：
G. Kite;N. Kouwen
比较了使用集总水文模型和使用同一模型的一个版本，先后适用于不同的土地利用分流域。一个分水岭在落基山脉的不列颠哥伦比亚省分为三个贡献子流域，并进一步细分的土地覆盖分类，使用Landsat图像。水文模型分别应用于每个子流域的每个土地覆被类别，产生的水文线被路由到子流域出口，然后通过较低的子流域。最后的水文过程进行了比较，获得的模型对整个流域。结果发现，使用半分布模型给出的拟合优度统计优于集总盆地方法。通过优化发现的土地类别相关参数值确认了预期在山区盆地中的存储和渗透率的物理变化。半分布式模型的优点是，有关的参数值的土地覆盖特征提供了一种方法，调查土地利用变化，并允许该模型更容易地转移到其他流域。
A comparison was made between using a lumped hydrological model and using a version of the same model applied successively to different land uses within subbasins. A watershed in the Rocky Mountains of British Columbia was divided into three contributing subbasins, and each of these was further subdivided by land cover classification using Landsat images. A hydrological model was applied separately to each land cover class in each subbasin, and the resulting hydrographs were routed to the subbasin outlet and then through lower subbasins. The final hydrographs were compared to those obtained using the model on the basin as a whole. It was found that using a semidistributed model gives goodness of fit statistics that are better than the lumped basin approach. The land class dependent parameter values found through optimization confirm the physical variations in storages and infiltration rates that would be expected in a mountain basin. The advantage of the semidistributed model is that relating the parameter values to land cover characteristics provides a method of investigating land use changes and allows the model to be more easily transferred to other basins.