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hydrological impact    
相关语句
  水文效应
    Progress in the Hydrological Impact and Flood Response of Watershed Land Use and Land Cover Change
    流域土地利用/覆被变化的水文效应及洪水响应
短句来源
    The progress in the hydrological impact and flood response of watershed land use and land cover change is analyzed and summarized, and the study contents, methods and deficiencies are discussed.
    通过分析和总结已进行的有关流域土地利用/覆被变化的水文效应及洪水响应研究工作进展,讨论了其研究内容、方法及现有工作的不足之处.
短句来源
  水文效应
    Progress in the Hydrological Impact and Flood Response of Watershed Land Use and Land Cover Change
    流域土地利用/覆被变化的水文效应及洪水响应
短句来源
    The progress in the hydrological impact and flood response of watershed land use and land cover change is analyzed and summarized, and the study contents, methods and deficiencies are discussed.
    通过分析和总结已进行的有关流域土地利用/覆被变化的水文效应及洪水响应研究工作进展,讨论了其研究内容、方法及现有工作的不足之处.
短句来源
  水文效应
    Progress in the Hydrological Impact and Flood Response of Watershed Land Use and Land Cover Change
    流域土地利用/覆被变化的水文效应及洪水响应
短句来源
    The progress in the hydrological impact and flood response of watershed land use and land cover change is analyzed and summarized, and the study contents, methods and deficiencies are discussed.
    通过分析和总结已进行的有关流域土地利用/覆被变化的水文效应及洪水响应研究工作进展,讨论了其研究内容、方法及现有工作的不足之处.
短句来源
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  hydrological impact
The results provide both numerical and physical bases for the study of hydrological impact of climate change and variability in the region.
      
Transport-related imperviousness often exerts a greater hydrological impact than the rooftop-related imperviousness.
      
SWAT considers the spatial variability in hydrological impact by subdividing catchments in units with homogeneous site and land use characteristics.
      
As such, the model is a suitable tool for simulating hydrological impact of development and climate change scenarios.
      
An interface to transfer results from RCMs to hydrological impact models is therefore required.
      
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The impacts of land use and land cover change on hydrology is a focus task at present. In this paper, based on the analysis of runoff change in the Yunzhou reservoir basin, hydrological characteristic parameters which are tokens of hydrological impacts of human activities are selected and analyzed. The annual mean runoff from 1972 to 1991 is 1.33 m~3/s and annual mean precipitation is 440.3mm.This change trend of these two factors during this study periods indicates that annual mean runoff...

The impacts of land use and land cover change on hydrology is a focus task at present. In this paper, based on the analysis of runoff change in the Yunzhou reservoir basin, hydrological characteristic parameters which are tokens of hydrological impacts of human activities are selected and analyzed. The annual mean runoff from 1972 to 1991 is 1.33 m~3/s and annual mean precipitation is 440.3mm.This change trend of these two factors during this study periods indicates that annual mean runoff falls obviously but its degree of change becomes more and more weaken while the change of annual mean precipitation is not too obvious. In order to have a further analysis, prophase (from 1972 to 1981) and anaphase (from 1982 to 1991) are parted by 1981. Statistical indexes including standard deviation and coefficient of elasticity about the annual mean runoff and precipitation in two periods are calculated. Standard deviation of runoff in two periods is 0.63 and 0.24 while precipitation is 69.9 and 68.0. Elasticity of these two factors is 0.009 and 0.004 in prophase and anaphase. This trend shows the degree of runoff change responding to precipitation change goes weaken. Finally hydrological characteristic parameters such as annual mean runoff coefficient, mean peak flow, distribution uneven coefficient of runoff and variation coefficient of annual runoff which can assess hydrological effects of human activities are analyzed. Annual mean runoff coefficient is 9.3% in prophase while 6.8% in anaphase and annual mean peak flow is 20.3m~3/s and 18.7m~3/s. Distribution uneven coefficient of runoff is 0.9 and 0.8 while variation coefficient of annual runoff is 0.4 and 0.2.These parameters all show a downward trend. So the reason of runoff change is human activities such as more land use change and hydraulic engineers building. In conclusion, it's a simple and good way to indicate hydrological effects of human activities using hydrological characteristic parameters.

该文以地处半干旱地区的河北省张家口云州水库流域为研究对象,基于多年径流变化规律,探讨和归纳了评估流域人类活动水文效应的若干参数,并就这些参数值进行了分析。结果表明:研究时段内,研究流域年均流量呈明显的下降趋势且波动幅度明显减小,年均降水的上升或下降趋势并不太明显,径流变化对降水变化的响应程度趋于迟缓,而年径流系数、平均洪峰流量、径流年内分配不均匀系数、径流变差系数等水文特征参数均表现出下降趋势,初步得出了云州水库流域径流量的变化主要是土地利用和小水利工程建设等人类活动作用结果的结论。

Drought and flood have been important issues around the world. Land use and land cover change influence hydrological factors such as interception, infiltration and evapotranspiration, the progress of water generation and concentration, then affect the discharge at the watershed outlet, and then influence the frequency and degree of flood. Taking this kind of study is of important significance for sustainable development of society and economy. The progress in the hydrological impact and flood response...

Drought and flood have been important issues around the world. Land use and land cover change influence hydrological factors such as interception, infiltration and evapotranspiration, the progress of water generation and concentration, then affect the discharge at the watershed outlet, and then influence the frequency and degree of flood. Taking this kind of study is of important significance for sustainable development of society and economy. The progress in the hydrological impact and flood response of watershed land use and land cover change is analyzed and summarized, and the study contents, methods and deficiencies are discussed.

干旱与洪涝灾害已成为全球关心的重大问题.土地利用/覆被变化影响雨水的截留、下渗、蒸发等水文要素及其产汇流过程,并进而影响流域出口断面的流量过程,加大流域洪涝灾害发生的频率和强度.深入研究土地利用/覆被变化对洪涝灾害的影响,对于社会经济可持续发展具重要意义.通过分析和总结已进行的有关流域土地利用/覆被变化的水文效应及洪水响应研究工作进展,讨论了其研究内容、方法及现有工作的不足之处.

 
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