The middle and lower reaches of the Yangtze River are prone to flood disasters, and the causes and t

Reasons: 1. There are many plains in the middle and lower reaches, and the terrain is low and flat, which is not conducive to flooding.

2. It belongs to the monsoon climate, with a lot of precipitation and concentration, and a lot of heavy rain in summer.

3. The north and south tributaries flow into more.

4. The upstream area has serious damage to vegetation, resulting in soil erosion, and the downstream riverbed is raised, and sediment is silted up, forming an above-ground river.

The Jingjiang River section is particularly prominent, known as the "Nine Curved Ileum").

5. People surrounded the lake to create farmland, which reduced the area of the lake, and weakened the lake's ability to regulate and store floodwaters.

Measures: 1. Strengthen soil and water conservation work in the upper reaches and plant more trees.

2. The middle reaches of the river section are "cut off and straightened", and the river channel is dredged.

3. Construction of water conservancy projects downstream (reinforcement of flood control embankments and construction of reservoirs).

4. Improve people's awareness of flood prevention and self-rescue ability.

In fact, the floods in the middle and lower reaches of the Upper Yellow River have historically been much stronger than those of the Yangtze River. It's just that it's been dry recently, and there is no water to drink. The Yangtze River is really prone to flooding in the middle reaches, that is, the section from Yichang to Hukou.

This section of the river is narrower, and the tributaries have increased significantly. In addition, from the mouth of the lake to Yichang, the altitude rise and fall is very small, and the water is easy to stay here.

Reasons:1The downstream area is flat, and the flowing water is not easy to drain.

2.At the same time, a large number of lakes have been enclosed for farmland in the middle and lower reaches, which has reduced the water storage capacity of the lakes.

3.Indiscriminate deforestation in the upper reaches of the river has caused soil erosion, reduced the water-holding capacity of forests, and blocked rivers.

4.The summer monsoon is weak, and it stays in the Yangtze River basin for a long time, and the Yangtze River basin has a lot of precipitation, causing floods.

Governance measures:1In the upstream area, indiscriminate logging, afforestation, and soil conservation are prohibited.

2.In the middle and lower reaches of the region, the land is returned to the lake and the river is dredged. Strengthen flood storage capacity.

Numerous tributaries 2Abundant precipitation 3The flat terrain of the plains is not conducive to the drainage of floods 4

The disappearance of the lake leads to a weak water storage capacity 5Sediment accumulation, resulting in a raised riverbed.

And whether the monsoon climate is unstable counts.

You can do all of this, and it doesn't cost money.

Can you come with something that doesn't have it?

Organize the answer = put the set on it, and then change it again.

No. That's what I thought.

Okay, good, you've helped me a lot.

The monsoon climate is unstable, and it should be a significant monsoon climate.

Rain and heat at the same time.

Summary. The middle reaches of the Yangtze River are prone to flooding.

The main reasons are;

The water outlet of the entire Sichuan Basin mainly depends on the Yangtze River, and when the rainfall in Sichuan increases, the runoff of the Yangtze River will increase greatly in a short period of time.

The middle reaches of the Yangtze River are bent and gentle, which is not conducive to the rapid decline of the river, and when a large amount of water comes from the upstream, the water level will rise rapidly, and if the embankment collapses or overflows at this time, serious flooding will occur.

In the past, the response was to strengthen the embankment on the one hand, and set up a flood discharge area in the low-lying area along the Yangtze River, and when the water level rose close to the limit of the embankment, the embankment was blown at a specific point to allow the flood water to flow into the flood discharge area to reduce the water level of the river.

After the completion of the Three Gorges Project, the Three Gorges Reservoir capacity is now being used to reduce the flow of the Three Gorges when floods come from the upper reaches of the reservoir and to avoid the situation of excessive water level.

In which section of the middle and lower reaches of the Yangtze River flood disasters mainly occur, and what are the reasons for the frequent flood disasters in this section of the Yangtze River? What are the governance measures?

Hello, please wait.

The middle reaches of the Yangtze River are prone to flooding. The main reasons are; The water outlet of the entire Sichuan Basin mainly depends on the Yangtze River, and when the rainfall in Sichuan increases, the runoff of the Yangtze River will increase greatly in a short period of time. The middle reaches of the Yangtze River waterway bends, the terrain is gentle, which is not conducive to the rapid downward flow of the river, when a large amount of water comes from the upstream, the water level will rise rapidly, such as shouting and seeping fruit at this time the embankment collapses or overflows, serious flooding will occur.

In the past, the response was to strengthen the embankment on the one hand, and set up a flood discharge area in the low-lying area along the Yangtze River, and when the water level rose close to the limit of the embankment, the embankment was blown at a specific point to allow the flood water to flow into the flood discharge area to reduce the water level of the river. After the completion of the Three Gorges Project, the Three Gorges Reservoir is now being used to reduce the flow of the Three Gorges and avoid the occurrence of excessive water levels when the water from the upstream floods and seepage.

If you think that mine is helpful to you, please click Done and give a like, thank you Your encouragement is the biggest motivation for me to take the ruler shirt.

Natural causes: abnormal climate, heavy rainfall in the basin.

The terrain is flat (middle and lower reaches) and the flood discharge capacity is insufficient.

The vegetation in the upper and middle reaches has decreased, and soil erosion is serious.

There are many tributaries, a large basin area, and a large amount of incoming water.

Some river channels are crooked, and the downstream channels into the sea are silted up, and the water flow is not smooth.

Man-made reasons: Surrounding the lake to create farmland, poor flood storage capacity.

Sediment accumulation, elevated river bed, poor flood storage capacity.

Governance measures: Strengthen soil and water conservation in the middle and upper reaches, return farmland to forests, plant trees and grasses, and conserve water and soil.

In the middle and lower reaches, the flood storage capacity and flood discharge capacity of rivers should be enhanced, land should be returned to lakes, water conservancy projects should be built, river channels should be dredged, and dams should be strengthened.