河系

中国南方岩溶地下河系形成演变的链式规律

The Chain-Rules of forming and evolution of underground river system in karst areas in South China

关于共有赞比西河系无害环境管理的行动计划协

Agreement on the Action Plan for the Environmentally Sound Management of the Common Zambezi River System

基于图论的树状河系Horton码自动建立

Automatic Creation of Horton Code of Tree-Like River Networks Based on Graph Theory

建立了基于河段的河系结构化数据模型。

A structural river network data model based on reaches is developed .

河系自动符号化的研究与实现

Research on Automated Symbolization of River Networks for Digital Mapping

基于图论的树状河系结构化绘制模型研究

Structured Design of Dendritic River Networks Based on Graph

岩溶峰丛山区地下河系发育特征及综合开发利用典型研究

Study on Development of Subterranean River System in Karstic Mountainous Terrain and Its Exploitation

主流识别的多准则决策模型及其在河系结构化中的应用

A Multi-criteria Decision Model for Identifying Master River and Its Application in River System Construction

水电站库区地下河系浸没内涝程度研究

Research on Degree of Inner Waterlogging of Immersed Subterranean River System in Reservoir Areas of Hydroelectric Stations

以树状河系为研究对象，分析其空间特征，建立基于图论的水系网矢量模型。

This paper analyzed the spatial characteristics of tree-like river networks , and built vector model based on graph theory .

南宁市辖区雨量充沛，河系发达，水库密布，人均可利用水量充沛。

Nanning City area with plenty of rainfall , the river developed at the reservoir , one can use water plentiful .

按照黄河下游河道演变的成因、影响及其与相邻河系的关系等，将黄河发育进化分成9个历史阶段。

The Yellow River evolution is divided into 9 periods according to its formation , influence , and its relationship with adjacent rivers .

建立了一种面向自动综合的河系结构化数据模型，模型包含了大量水系综合所需要的信息。

A structural river network data model based on automated generalization oriented is developed , which contains lots of information needed by river network generalization .

珠江是中国南方的最大河系，径流量全国第二，仅次于长江。

The Pearl River is the largest river system in South China and its river runoff ranks second in China only to the Changjiang River .

本计画的主要目的是对新屋溪河系的河水堰作现况调查及建立一套基本资料库管理系统。

The water supply for irrigation in the Shin-Wu drainage is mainly based on diversion weirs , which are managed by the Tao-Yuan irrigation association .

同时，先进的科技对中国传统审美文化的破坏作用亦不容忽视。道教审美文化是中国传统审美文化河系的重要支流。

In the mean time , the damage to the traditional Chinese aesthetic culture caused by the advanced science and technology are not to be ignored .

分析了河系自动综合中的空间知识及其形式化方法，建立了组织河系空间知识的两种数据模型，总结了河流选取中的规则性知识。

Discuss the knowledge formalization method of river selection , two kinds of spatial knowledge data models are put forward and the rules of river selection are summed up .

长距离输水工程沿途往往要跨越众多河系，极易受到洪水的冲击，这就需要对其综合水毁风险给出定量的评估。

It is very often that long distance water transfer engineering was destroyed by flood due to too many rivers to cross . So synthese flood risk analysis is needed .

参考河段的流向、节点处分支河段的累计河段数和累计长度，能自动推理出树状河系的主支流关系。

According to the flow directions of channels , accumulated numbers and accumulated lengths of channels on a node , the relations of main streams and branch rivers can be reasoned automatically .

将支流流量的松弛迭代方法从树状河系推广到了环状河网，使任意复杂河网水力计算的问题都可化为一系列的单一河道的水力计算问题；

The relaxation iterative method for solving branch river networks is extended , which can turn the problem of any complex river networks into the problem of a series of single rivers .

加强城市外围绿带生态廊道形成生态圈、利用城市人工廊道、自然河系廊道的有效途径连接各斑块。

At the same time strengthens the city periphery greenbelt ecology corridor to form the ecosphere , using the city artificial corridor , the natural river is the corridor effective way connects various mottlings .

河系是地图符号的几大要素之一，是地理环境中具有骨架控制作用的地图表示的重要内容之一。

River network is one of the features that map symbol should represent , and also is one of the important contents in the digital map which makes its skeleton-control role in the geographical environment .

有时，河系上游产生的山洪随着其他支流来水的陆续汇集，可演变成为一个比较和缓的河道洪水，向下游演进。

Sometimes , a flash flood in the upper reaches of a river system can evolve into a more general river flood as it joins with other inflows and spreads out as it travels downstream .

本文运用模糊聚类法对龙潭地下河系28个监测断面水质划分4个污染级别，据此评价各河段水质环境。

By using the fuzzy-clustering method , the paper divides the water qualities at the 28 monitoring sections along the Longtan underground stream system into 4 pollution grades , and the water-quality environ - ments in different ranches of the stream system are assessed accordingly .

在河系结构化的基础上，提出了结合河系空间知识和河流选取规则的河流选取推理框架，并且进一步提出了保持河系综合前后整体特征的推理框架，结合这一思路，进行了河流选取实验。

Put forward the reasoning framework of the river selection based on the constructed information of river system and the rules of river selection . Further more , this thesis set up the reasoning framework to preserve the entireness character of the whole river system .

运用时历法和系统预测模型法联合对多河系、多水源补水保淀水量进行了预测，在协调两种成果的基础上，合理预测了补淀前景。

Combining with diachronic way and the system forecast model , the minimum water quantity of The Baiyang Wetlands caused by multi-rivers and multi-water head applying water is predicted , basing on the two production , the foreground of water quantity that can supply is predicted .

同时存在水资源配置体系不完善，河系间、河湖（库）间缺少必要的连通工程，应对持续干旱和严重干旱的能力较低，再生水利用以及非常规水利用水平有待进一步提高等问题。

The water resources allocation system there is not perfect , river system ( library ) of between , between lack of necessary connecting engineering , deal with continuous drought and severe dry capacity is low , the recycled water use and abnormal water use level to be further improve .