| 遥感资料在SCS模型产流计算中的应用 |
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| 引用本文： | 魏文秋,谢淑琴.遥感资料在SCS模型产流计算中的应用[J].遥感学报,1992(4). |
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| 作者姓名： | 魏文秋 谢淑琴 |
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| 作者单位： | 武汉水利电力学院
(魏文秋)，武汉水利电力学院(谢淑琴) |
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| 摘 要： | SCS模型在降雨径流关系上,考虑了土壤类型、土地利用和前期土壤含水量状况,使产流计算建立在较合理的基础上。但由于反映上述因素的综合指标CN的地区性、前期土壤含水量分级太粗、土壤分类的不通用性等,在我国直接应用误差太大。本文分析了误差太大的原因,提出了对SCS模型产流计算的改进方法;并采用土壤质地分类,提出用混合聚类法进行土壤分类。改进后的SCS模型产流计算不仅提高了精度,还可用来进行降雨径流预报。
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| 关 键 词： | 产流计算 土壤质地 混合聚类 |
THE APPLICATION OF REMOTE SENSING IN RUNOFF FORMATION IN SCS MODEL |
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| Wei Wenqiu Xie Shuqin.THE APPLICATION OF REMOTE SENSING IN RUNOFF FORMATION IN SCS MODEL[J].Journal of Remote Sensing,1992(4). |
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| Authors: | Wei Wenqiu Xie Shuqin |
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| Institution: | Wuhan University of Hydraulic and Electric Engineering |
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| Abstract: | SCS model is a small basin design flood model proposed by Soil Conservation Service (SCS) of USDA. At rainfall-runoff relationship, SCS model gives consideration to land used, soil type and antecedent soil moisture. Because the model tallies with the actual situation at rainfall runoff computation and is simple in structure, this model finds wide application. But soil classification and Runoff Curve Number (CN) in the model are restricted by region, it isn't suited to China. In this paper, we propose the formula to calculate the initial abstraction (Ia) and potential maximum retention (S), as well as the soil type classified by soil texture and application of remotely sensed data. The rationality of improved SCS model is proved by rainfall-runoff calculation in Chuzhou exprimental basin, Anhui province. |
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| Keywords: | Calculation of run off yield Soil texture Complex cluster |
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