High School Geography China Geography River Differences Problem

What is the difference between river system characteristics and hydrological characteristics in high school geography? 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 old Chinese saying goes: "Water flows to a lower place." "It is under this general 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 system in high school geography refer to the source, flow direction, river length, water system attribution and water system morphology (such as dendritic, fan-shaped, etc.), river basin overview (area, hydraulic resources, etc.), river channel width and straightness, river network density (the development degree of tributaries), etc. i.e., direction, system, volume, channel, degree (the degree of development of tributaries).

High school geography river hydrology refers to the river water structure and changes, such as flow, flow rate, water level, flood season, water temperature and glacial age, sediment content, etc. The most important factor influencing the hydrological changes of a river is the recharge of the river, that is, the water source. And the water recharge, for most rivers, is mainly rainwater recharge.

Therefore, the hydrology of the river is closely related to the climate of the place where the river flows. Ice ages, including floods, are of course also climate-related. For example, in the middle reaches of the Yellow River, the surface structure is simple, composed of loess that is easily eroded by flowing water, and there is little vegetation on the ground, resulting in the characteristics of large sediment content of the Yellow River.

The hydrological characteristics of rivers in high and high geography include the amount of water, the flood season and the seasonal variation of the water volume, the sediment content, the flow velocity, and the presence or absence of ice periods, i.e., the quantity, season, ice and sand.

The hydrological characteristics of high and high school geographical outflow rivers generally include the water level, flow, flood season, sediment content and ice period, etc., and the factors affecting the hydrological characteristics of rivers are mainly climatic factors, corresponding as follows

Characteristics and causes of high school geographical outflow river water exchange:

1. Water level, flow rate and seasonal changes.

The water level and flow rate depend on the type of river recharge, and the change of river water level dominated by rainwater recharge is determined by the characteristics of precipitation. In rivers fed by glacial meltwater, the change of water level is determined by the characteristics of temperature.

2. The length of the flood season.

The rainy season starts early and ends late, and the river flood season is long. The rainy season starts late and ends early, and the river flood season is short.

3. The size of the sand content.

It is determined by the vegetation cover and soil conditions. The vegetation cover is poor, the soil is loose, and the river has a large sediment content. On the contrary, the sand content is small.

4. Whether there is an icing period.

It is determined by the minimum temperature in the basin. The average monthly temperature is below 0 and the rivers are frozen, and there is no freezing period above 0.

5. The flow rate of the river.

Determined by the topography, the drop is large, the flow velocity is large, the terrain is flat, and the water flow is slow.

6. Water energy reserves.

It is determined by the topography, climatic characteristics, etc. within the basin.

Geography of China: Differences in the hydrological characteristics of rivers in different regions.

The difference in flow mainly depends on the difference in precipitation between the north and the south The difference in precipitation depends on the length of the rainy season.

Mainly due to climatic reasons, the southern precipitation is large, the river flow is large, and the northern precipitation is small, the river flow is small.

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Typical areas of desertification in China: the causes of desertification in Northwest China (Xinjiang, Qinghai, Inner Mongolia, etc.); (1) Natural causes: The climate is dry early, and the evaporation is vigorous; It is located inland and precipitation is scarce.

2) Human causes: overgrazing; excessive woodpicking; over-reclamation; irrational use of water resources; Improper protection of the construction of transportation lines and other projects. Governance Measures:

Formulate laws and regulations on grassland protection and strengthen management; control of livestock carrying capacity; Construction of "Three-North Shelter Forest": returning farmland to forest and pasture; construction of artificial grasslands; Promote rotational grazing, etc.

Geography problems in the third year of high school.

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Typical areas of desertification in China: the causes of desertification in Northwest China (Xinjiang, Qinghai, Inner Mongolia, etc.); (1) Natural causes: The climate dry stool sells early, and the evaporation is vigorous; It is located inland and precipitation is scarce.

2) Human causes: overgrazing of jujube surplus; excessive woodpicking; over-reclamation; irrational use of water resources; Improper protection of the construction of transportation lines and other projects. Governance Measures:

Formulate laws and regulations on grassland protection and strengthen management; control of livestock carrying capacity; Construction of "Three-North Shelter Forest": returning farmland to forest and pasture; construction of artificial grasslands; Promote rotational grazing, etc.

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These four questions, and then mark the small question number when writing the answer.

13 questions can't see the relatives clearly.

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How to judge the river:

1. According to a contour line, it is determined that the river flows towards the river flowing in the valley, and the terrain where the river flows is lower than on both sides. As long as the bend of a contour line is known, the direction of the river can be determined, that is, from the bend of the contour line.

2. According to a set of isodiving potentials, the value of the diving level of the river flow can reflect the height of the terrain, that is, the value of the diving potential indicates that the terrain is higher. The bending of the diving potential can reflect the recharge relationship between the river and the diving, that is, the perpendicular line of any isodiving potential line, and the value points from the high to the low, if the perpendicular arrow points to the river, it indicates that the diving feeds the river, and vice versa, the river feeds the diving.

3. According to the water level change curve of the upstream and downstream of the lake or reservoir, it is determined that the river flow to the lake or reservoir has a regulating effect on the river runoff, so that the annual runoff of the river downstream of the lake or reservoir is relatively stable, so the fluctuation of the water level change curve is small.

Fourth, according to the rational planning map of the city, the most important thing to determine the flow of rivers to the city is to deal with the location of industrial areas and residential areas, and factories that need clean water sources.

5. Some common river flows you have to keep in mind. Think more about yourself and summarize in time.

Happy learning!

The large circulation between land and water, which is the physical geography, the water of the river mainly comes from the collection of precipitation and snowfall. Precipitation and snowfall seep into groundwater, river water, and may become part of year-round snow and icebergs.

If intercepted, it is ostensibly useful. In fact, it destroys the balance of natural ecology. It is even severe enough to paralyze the ecosystem.

In addition, it is not worth intercepting the seawater, and the project cost is large, which affects the balance of the local ecological environment. It will also cause waterlogging in the city at the entrance to the sea.

Actually, you just want to save water, but there are many ways. If you put your heart into it, everyone will work hard. It's action, not talk.

Hehe, I used to have these weird thoughts too. The more we think about it, the more we think about it. I think if you hold back the water, you're going to have to build a big reservoir.

It is estimated that all the places along the coast will be used as reservoirs; Most of the river water is a lot of water vapor over the ocean, through the action of wind, etc., brought to the land through rain and snow back to the ground, an average of 16 days can be completely recycled, so as to ensure the quality of the water, if they are stored and do not let him circulate, it is equivalent to drinking stagnant water, hehe; The water cycle is the "link" and "regulator" that connects the world's circles and various water bodies, which regulates the energy between the circles of the sphere and plays an important role in the cold and warm climate change. The water cycle is the "sculptor" that shapes the colorful image of the surface through erosion, transport and accumulation. The water cycle is the "conveyor belt", which is a powerful driving force for the migration of surface materials, and the main carrier.

What's more, through the water cycle, the ocean continuously delivers fresh water to land, replenishing and renewing freshwater resources on new land, making water a renewable resource. So all of this is what I think is the reason why the river flows into the sea, and I hope it can help you solve a little bit of the doubts in your mind. Hehe.

If you hold the water back.

1.Those that stop at the sea may be washed away, wasting money.

2.If the dam doesn't break down, the water downstream of the river will rise higher and higher, flooding the cities downstream.

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