欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
大坝建设会对河流水文情势带来影响,进而影响河流生态系统。针对水电站调度对河流水文情势影响评价问题,引入分形理论,采用分形维数来评价电站调度对水文情势的影响程度,并将其用于东江上游枫树坝电站调度对其下游水文情势影响评价。采用龙川水文站49 a日流量数据进行计算,并与变差系数、峰度值进行对比分析,结果表明,分形维数与变差系数、峰度值对流量过程变化表征一致。分形维数明确表征洪水的集散程度和变化频率,即洪水集中,变化频率低,分维数相对较小;反之,分维数相对较大。同时,分形维数可以用来评价年度水文过程的自相似性。
英文摘要：
The predicted increase in hydropower station building due to energy demand is expected to affect river water regime and,in turn,cause river ecosystem impacts.To understand the potential impact of hydropower station scheduling on river hydrological regime,this paper outlines a methodology based on fractal dimension to quantify the effects of hydropower station scheduling on river water regime for Fengshuba Hydropower Station in the upstream of the Dongjiang River in China.Using 49a observed data from the Longchuan hydrological regime.The results presented here show that the fractal dimension is consistent with coefficient of variation and peakness on the representation of hydrograph.The fractal dimension may indicate the aggregative or discrete degree and variation frequency of flood,namely the more aggregative and frequent flood is,the bigger fractal dimension is;and vice versa.Moreover,self-similarity of flow process can be estimated by the fractal dimension.
同期刊论文项目
同项目期刊论文
Assessing climate change impacts on the ecohydrology of the Jinghe River basin in the Loess Plateau,
Relationship between the hydrological conditions and the distribution of vegetation communities with
Process study of circulation in the Pearl River Estuary and adjacent coastal waters in the wet seaso
Process Study of Dry-Season Circulation in the Pearl River Estuary and Adjacent Coastal Waters using
Accumulation and distribution characteristics of platinum group elements in roadside dusts in Beijin
Application of Distributed Hydrological Model Based on Multivariant Checking for Monitoring Regional
Occurrence, Distribution, and Assessment of Heavy Metals in Roadside Dusts in Universities in Beijin
Assessment of Seldom Monitored Trace Elements Contamination in Surface Sediments of Bohai Bay, North
Development of dualistic water cycle model and dynamic assessment of water resources in the Hun Rive
,Assessing ecological land use and water demand of river systems: a case study in Luanhe River, Nort
Quantitative analysis on the ecological and environmental impact of large-scale water diversion proj
Assessing the impact of climate variability on potential evapotranspiration during the past 50 years
Combination Measures of Plant Buffer Strips and Agronomic Management to Control Soil and Nutrient Lo
Integrated simulation and assessment of water quantity and quality for a river under changing enviro
A stem-branch topological codification for watershed subdivision and identification to support distr
Research on response of the Chinese pine to regional climatic factors and droughtevents, XiaowutaiMo
期刊信息
位置：