搜索结果: 1-14 共查到“知识库 理学 SWAT”相关记录14条 . 查询时间(0.062 秒)
变化环境下洪水序列的一致性遭到破坏，引发基于统计原理计算的设计洪水可靠性下降，亟需开展非一致性条件下的设计洪水修订研究.以淮河上游流域为研究区域，运用Pettitt检验法和滑动t检验法综合检测年最大洪峰流量序列突变点，在此基础上，采用SWAT分布式水文模型对变异前的洪峰与洪量序列进行还现，利用径流深的模拟结果修订设计洪水，并对修订后的洪水序列进行频率分析.结果表明：（1）淮河上游息县和淮滨站年最大...
Mitigating Economic Damage in Kenya’s Upper Tana River Basin:An Application of Arc-View SWAT
reforestation Kenya Tana River SWAT erosion runoff green payments
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2015/8/13
The Upper Tana River Basin is one of Kenya’s most important natural resource bases. Its Masinga Reservoir supplies water and hydroelectric power for 65 percent of the nation. Unregulated deforestation...
Mitigating Economic Damage in Kenya’s Upper Tana River Basin: An Application of Arc-View SWAT
reforestation Kenya Tana River
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2015/1/7
The Upper Tana River Basin is one of Kenya’s most important natural resource bases. Its Masinga Reservoir supplies water and hydroelectric power for 65 percent of the nation. Unregulated deforestation...
基于SWAT模型的农业干旱评价方法与应用
SWAT模型 径流模拟 土壤含水量 农业干旱评价
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2015/9/11
以渭河上游灞河流域为研究区域,构建了SWAT分布式水文模型并进行水文过程模拟,得到土壤含水量模拟
数据,据此计算获取土壤相对湿度。将计算结果作为农业干旱评价指标,对该流域的旱情等级进行评价。结果显
示,2001年和2002年灞河流域春旱严重,2003年伏旱明显,这与流域记载的实际旱情描述大致吻合。研究表明,
SWAT模型对于土壤墒情资料缺乏地区的农业干旱评价工作,具有一定的适用性。
山美水库流域水量水质模拟的SWAT与CE-QUAL-W2联合模型
SWAT CE-QUAL-W2 联合模型 山美水库流域
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2014/2/24
为更好地模拟分析流域非点源污染对山美水库水质的影响,联合运用流域日尺度分布式水文模型SWAT和二维垂向水动力水质模型CE-QUAL-W2,将SWAT模型的时序输出作为CE-QUAL-W2模型的输入条件,构建了山美水库流域水量水质模拟联合模型,并对流域径流、输沙和污染物以及水库的水位、水温和无机氮等变量进行了率定.结果表明: 尽管受流域部分计算结果的影响,误差会累积到对下游水库水体的计算,但模型的模...
Sediment management modelling in the Blue Nile Basin using SWAT model
Sediment management modelling Blue Nile Basin SWAT model
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2011/3/15
Soil erosion/sedimentation is an immense problem that has threatened water resources development in the Nile river basin, particularly in the Eastern Nile (Ethiopia, Sudan and Egypt). An insight into ...
Comparing model sensitivities of different landscapes using the ecohydrological SWAT model
landscapes the ecohydrological SWAT model
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2010/2/3
Lowland areas are characterised by specific properties, such as flat topography, low hydraulic gradients, shallow groundwater, and high potential for water retention in peatland and lakes. The investi...
Ethnobatany of Plants of Ghalegay, District Swat, Pakistan
Ethnobotany Medicinal plants Ghalegay Pakistan
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2009/6/1
Ethnobotanical study of plants revealed that the local community of Ghalegy , District Swat , invariably uses 126
species of 59 families for various purposes . Based on their traditional local uses, ...
Analysis of the spatial variation in the parameters of the SWAT model with application in Flanders, Northern Belgium
hydrological regionalisation
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2009/3/6
Operational applications of a hydrological model often require the prediction of stream flow in (future) time periods without stream flow observations or in ungauged catchments. Data for a case-specif...
Application of the SWAT Model for River Flow Forecasting in Sri Lanka
Xinanjiang model SWAT model conceptual watershed models distributed watershed models river flow forecasting
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2008/12/2
In the present study, the SWAT model and the Xinanjiang model have been used for daily flow forecasting of the Kalu River upper catchment in Sri Lanka. Kalu River is the second largest river in Sri La...
基于SWAT模型的基流估算及评价
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2007/8/24
SWAT是一个具有很强物理机制的长时段的流域分布式水文模型，它能够利用GIS和RS提供的空间数据信息，模拟复杂大流域中的径流成分。本文应用SWAT模型对基流进行模拟，分别采用1992～1996年和1997～1998年洛河流域卢氏水文站逐年、月实测径流资料进行模型校准和验证，确定模型的敏感性参数：径流曲线数、地下水再蒸发系数、土壤蒸发补偿系数和植物蒸发补偿系数；并借助滤波技术...
SWAT模型的原理、结构及应用研究
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2007/8/24
SWAT(Soil and Water Assessment Tool)是一个具有很强物理机制的长时段的流域分布式水文模型。它能够利用GIS和RS提供的空间数据信息，模拟复杂大流域中多种不同的水文物理过程，包括水、沙、化学物质和杀虫剂的输移与转化过程。本文着重探讨SWAT模型的水文学原理和模型的基本结构与独特的分布式运行控制方式，并将其成功应用于西北寒区(黑河莺落峡以上流域...
Calibration and uncertainty issues of a hydrological model (SWAT) applied to West Africa
Calibration and uncertainty issues a hydrological model West Africa
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2010/1/26
Distributed hydrological models like SWAT (Soil and Water Assessment Tool) are often highly over-parameterized, making parameter specification and parameter estimation inevitable steps in model calibr...
Modelling of point and non-point source pollution of nitrate with SWAT in the river Dill,Germany
point and non-point source pollution nitrate SWAT river Dill
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2010/1/25
We used the Soil and Water Assessment Tool (SWAT) to simulate point and non-point source pollution of nitrate in a mesoscale mountainous catchment. The results show that the model efficiency for daily...