What is a river system? What are the characteristics of a river system?

The Pearl River is the fourth largest river in China, with a total length of kilometers and a basin area of 10,000 square kilometers (a very small part of which is in Vietnam), spanning Yunnan, Guizhou, Guangxi, Guangdong, Hunan, Jiangxi, Hong Kong and Macao 8 provinces, autonomous regions and special administrative regions. The name of the Pearl River, which began in the Song Dynasty, originally referred to the section of more than 70 kilometers from Liuxi River to Baietan, Guangzhou, to Humen. The Pearl River is now a water system, which is composed of the Xijiang, Beijiang, Dongjiang and Delta river networks, and the main and tributary rivers are fan-shaped, like dense branches.

The Xijiang River is the main stream of the Pearl River system, with a total length of 2,214 kilometers and a basin area of 10,000 square kilometers. There are many rivers in the Pearl River system, with 8 rivers with a catchment area of more than 10,000 square kilometers and 49 rivers with a catchment area of more than 1,000 square kilometers.

The characteristics of river systems are generally described from the following aspects:

1. The length and direction of the river.

Judgment basis: the water flows to a low place.

For example: a. Many large rivers in China flow from west to east due to the influence of the topography of high in the west and low in the east.

b. The central part of Hainan Island is high and low in all directions, and it is radially diverted to all sides.

2. The status of the water system and the extent of the river basin.

Judgment basis: Restricted by the direction of the mountain range.

For example: a. The Yangtze River water system is basically located between the Kunlun Mountains - Qinling Mountains and Nanling Mountains, which are uplifted into mountains and cut down into valleys to form river valleys.

b. The Mississippi River in the United States is influenced by the Cadillera Mountains and Appalachian Mountains in the north-south direction, and its tributaries enter the main river trunk from east to west.

3. The number and morphology of tributaries.

For example, the Mississippi River has many long tributaries and radial water systems.

4. Morphology and density of river network.

Rivers generally flow from the source to the erosion datum, with valley water and groundwater pooling along the way.

5. Drop or canyon distribution.

6. The width, bend, and depth of the river.

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Hello, the characteristics of the river system are generally described from the following aspects: 1. The length and direction of the river. Basis for judgment:

The water flows to a lower place. For example: a. Many large rivers in China flow from west to east due to the influence of the topography characteristics of high in the west and low in the east.

b. The central part of Hainan Island in Hengsheng is high and low in all directions, and it is radially diverted to the surrounding areas of the closed front.

2. The status of the water system and the extent of the river basin. The judgment is based on the subtlety: it is restricted by the direction of the mountains.

For example: a. The Yangtze River water system is basically located in the Kunlun Mountains - between the Qinling Mountains and the Nanling Bridge, which uplifts into mountains and cuts down into valleys to form river valleys b. The Mississippi River in the United States is affected by the north-south Cordillera Mountains and Appalachian Mountains, and the tributaries enter the main trunk of the river from east to west.

3. The number and morphology of tributaries. For example, the Mississippi River is a long tributary of the Mississippi River, which is a radial water system.

4. Morphology and density of river network. Rivers generally flow from the source to the erosion datum, and there are mountains and Zhengfan valley flowing water and groundwater pooling along the way. 5. Drop or canyon distribution.

6. The width and narrowness of the river, the bend and hail, and the depth of the river.

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Question 1: What is the difference between the water system and the river basin The water system refers to a specific river, and the river basin refers to the area formed by the erosion of a river for thousands of years, such as the Yellow River.

Question 2: What is a river basin, how is the classification of the water system, and the tributaries of the water system faintly or faintly determined? In a nutshell:

A watershed is the surface area (ground) through which a river system (a network of water carries chaos) flows. The tributary level is like a branch, a branch on the trunk of a big tree, a branch on a tree, and a branch on a branch.

Watershed: Refers to the catchment area of a river surrounded by a watershed. There are two types of water catchment areas: surface catchment areas and underground catchment areas.

If the surface catchment area and the underground catchment area coincide, it is called a closed watershed; If it does not coincide, it is called a non-closed watershed. The term "watershed" generally refers to the surface catchment area.

Water system: A water network system composed of all rivers, lakes and other water bodies in a basin, called a water system. Among them, the water flow eventually flows into the ocean is called the outflow water system, such as the Pacific Ocean water system and the Arctic Ocean water system; When water eventually flows into inland lakes or disappears into deserts, it is called an inland water system.

The tributary level is in the same water system, and the rivers that directly flow into the main stream are called first-class tributaries, and those that directly flow into the first-class tributaries are called second-class tributaries, and so on. The order of the river channel is to be at the top of the river network, the upstream river without further branches is called the primary channel, the river channel after the confluence of two primary rivers is called the secondary channel, and so on.

Question 3: Geography Compulsory 3 What is the main stream, the tributary water division, the concept of river basin and water system Mainstream: There are more than two rivers of different sizes that converge in different forms to form a river system. Stove Wood.

Watershed: Refers to the highland or ridge that separates two adjacent watersheds.

Tributary: A river that flows into another river or other body of water without directly entering the sea.

Watershed: The catchment area of a river surrounded by a watershed.

Water system: A water network system composed of all rivers, lakes and other water bodies in the basin.

Question 4: What kind of water system does the Yunnan River basin belong to? How can such a question be asked. There are Jinsha River, Lancang River, Nu River and so on in Yunnan. It belongs to the Yangtze River water system and the Pearl River water system.

The river is a line on the surface of the land. Such as the Yellow River, Changma Bu River.

The characteristics of the river system mainly include the flow of the river, the flow direction, the area of the basin, the number and form of the tributaries, the density of the river network, the ownership of the water system, and the river channel (the width of the river valley, the depth of the river bed, and the bending coefficient of the river). The main factor influencing the characteristics of the river system is the topography, because the topography determines the flow direction, basin area, river channel condition and river system morphology.

The river system generally refers to the structure of the catchment channel. It includes elements such as source, infusion, flow, watershed, tributaries and distribution, and drop-off.

The river system generally refers to the structure of the catchment channel. It includes elements such as source, infusion, flow, watershed, tributaries and distribution, and drop-off. It is not difficult to see that the characteristics of the water system are closely related to the topography, as an ancient Chinese saying goes:

The water flows downward". It is under this general basic principle that as long as there is water, a river system can be formed, and when there is more water, the water system will be developed. The characteristics of river systems are also closely related to water sources, especially the outflow river systems, which are closely related to precipitation factors in climate.

It is even possible that the climate affects the characteristics of the river system, which in turn changes the topography.

The water system refers to the water network burial and sheltering system composed of all rivers, lakes and other water bodies in the basin.

According to the final result, the water system can be divided into:

Outflow water system, which refers to the flow of water into the ocean. An inland water system is a water flow that eventually flows into an inland lake or disappears into a desert. According to the shape, it can be divided into:

Dendritic water system refers to the dendritic water system of the main tributaries, which is generally developed in sedimentary rocks or metamorphic rock areas with consistent erosion resistance. Fan-shaped water system refers to the water system with fan-shaped contours formed by the combination of main and tributary rivers. The confluence time of this water system is concentrated, which is easy to cause heavy rainfall.

The plume water system refers to the water system in which the tributaries on both sides of the main stream are evenly distributed and are arranged in a feather-like manner. The confluence time is long, and the flooding process is slow after heavy rainfall. A parallel water system refers to a water system in which tributaries are arranged in an approximately parallel arrangement and flow into the main stream.

When the centre of a rainstorm moves from upstream to downstream, flooding is highly susceptible. The lattice-shaped water system is formed by the development of the main tributaries along two sets of vertically intersecting tectonic lines.