按河流演变的自然规律，黄河已达到其河床演变的临界值，很可能会再次改道。
In the natural river succession, the Yellow river course is in its critical situation and will probably change again.
这些足以说明，在自然状况下，河流演变在沙丘群和沙地形成演化中起着非常重要的促进作用。
Therefore, river evolution has very vital initiative and promoting effects on the formation and development of sand-dune groups and sandy land in natural conditions.
挟沙力沿河宽分布的变化是造成游荡型河道主流频繁摆动的主要原因之一，掌握其变化规律是研究游荡型河流演变规律的关键。
The law of sediment carrying capacity transverse distribution in braided river, which is the one of the key factors to research on the evolution rule of braided river, is presented.
河床河岸地质结构对河流地质作用的制约主导着河道演变的趋势。
The restraint of geologic structure of river bed and bank on the rivers geologic action controls the river evolution trend.
在河流坐标系中进行定量的深泓线演变分析，可精确计算深泓线的平面位移和垂向冲淤。
With quantitative thalweg evolution analysis in rivers coordinate system, the accurate thalweg of planar and vertical displacement of erosion and deposition can be calculated.
此类河流浅滩来水来沙条件及演变规律均与一般平原河流浅滩明显不同。
Its conditions of water, sand and evolution is different from those of plain river shoal.
河道的演变与河流的地质作用密切相关，而河流地质作用受到河谷地质结构的制约。
The river evolution and its geologic action are closely correlative, and the geologic action of a river is restricted by the geologic structure of the river valley.
河道浅滩演变研究是河流动力学的重要组成部分，是水利学科的基础性课题，也是进行水利、水运工程规划、设计、管理和工程可行性研究的基础工作。
Studying on river shoal evolution is a fundamental work in the science of water conservancy, water conservancy projects and waterways planning, designing, management and engineering feasibility.
冲积河流的自我调整作用所遵循的规律，目前在河床演变学中比较常用的是极值假说。
The extreme hypotheses is common law followed the self-adjusting mechanism of alluvial channels in riverbed evolution presently.
导致河流、湖泊演变的主要影响因素有气温变化、降水变化及冰川变化、气候雪线变化等。
The main influence factors leading to the changes of rivers and lakes include air temperature change, precipitation change, glacier change and climatic snow line change.
运用蜿蜒性河流的演变理论，研究了笑牌洲湾河段演变的一般性与特殊性规律。
Using the theory for evolution of meandering river, the common and especial evolution laws of Paizhouwan reach during more than 400 years were studied.
第一部分为石羊河流域水资源管理体系的历史演变。
The first part involves historical changes of water resources management system of the Shiyang River Basin.
研究结果和分析结论对了解黄河流域水资源演变具有十分重要的意义。
Furthermore, downriver precipitation gets more centralized than others'. The conclusions were important to research the evolvement of water resources the Yellow River Basin.
采用景观格局转移概率矩阵模型，对基于一级分类的淮河流域中游湿地景观演变进行分析。
The model of transformation probability matrix is used to analyze the change of wetland landscapes in the middle reaches of the Huaihe River basin based on the first classification of land use types.
三十年来我国河流地貌的研究主要为河谷地貌、河床演变和河口三角洲。
Research in fluvial geomorphology in China during the past 30 years was mainly along the lines of valley geomorphology, channel geomorphology, estuaries and deltas.
三十年来我国河流地貌的研究主要为河谷地貌、河床演变和河口三角洲。
Research in fluvial geomorphology in China during the past 30 years was mainly along the lines of valley geomorphology, channel geomorphology, estuaries and deltas.
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