Lead
"Why is the Yellow River known as the 'Hanging River', and why doesn't the state clean up the sediment at the bottom of the river?"
The Yellow River is the second largest river in the mainland and the cradle of Chinese civilization, but because of the sedimentation of too much sediment, the riverbed of many sections of the river has been raised, and the water surface of some sections of the river is 7 or 8 meters above the ground.
However, it is surprising to find that the state has not issued a relevant policy to clean up the sediment of the Yellow River.
Why doesn't the state clean up the Yellow River?
If sediment continues to accumulate at the bottom of the river, what will happen to the Yellow River?
So how exactly should this be solved?
1. Why is there so much sediment in the Yellow River?
The Yellow River flows through the Loess Plateau in the middle reaches, and the source of sediment on the Loess Plateau has a natural guarantee, and it is precisely because of this characteristic that the sediment of the Loess Plateau is very rich.
The Loess Plateau is the terrain of the Loess Plateau formed by the combined action of various natural factors such as wind erosion, water erosion, frost erosion, and thawing.
The soil structure of the Loess Plateau is very soft, which is also the basis for the formation of sediment, this soft soil, is easily washed away by rain, and on the Loess Plateau, the rainfall is very large, which can easily lead to soil erosion, which is a source of sediment in the Yellow River.
The second source of sediment is the yellow sand of the Loess Plateau.
The wind direction of the Loess Plateau is very easy to change, so the yellow sand is also easily blown to the side of the Yellow River, so the source of sediment in the Yellow River is guaranteed.
The sediment of the Yellow River is also a favorable influence on the Loess Plateau, the water of the Yellow River is rich in oxygen, oxygen is essential for the growth of plants, so the water is properly soaked in the Loess Plateau, can provide the necessary conditions for the growth of crops on the Loess Plateau.
The water of the Yellow River is also rich in inorganic substances and trace elements, which are essential elements for the growth of crops and can provide sufficient nutrients for the growth of crops.
In addition, the water of the Yellow River also contains a certain amount of organic matter, which is also necessary for the growth of crops, which can fertilize crops.
Therefore, the Yellow River water is properly soaked on the Loess Plateau, which can not only bring water, but also bring favorable elements for the growth of crops, so the Loess Plateau has become one of the main grain production areas on the mainland.
2. Why doesn't the Yellow River clean up sediment?
The Yellow River is very rich in sediment, but the mainland has not issued a relevant policy to clean up the sediment of the Yellow River, which is very incomprehensible.
Why doesn't the mainland clean up the sediment of the Yellow River?
This is because the sediment of the Yellow River has a wide range of sources, the sediment is rich in trace elements, and the sediment is replenished very quickly, so it is difficult to clean up the sediment artificially.
The sources of sediment are very extensive, not only the sediment caused by soil erosion, but also the sediment brought by the wind-blown sand on the Loess Plateau, so if you want to excavate the sediment, it means that the Loess Plateau must be excavated in all directions, which will cause serious damage to the ecosystem of the Yellow Plateau.
The sediment is replenished very quickly, but where is the cleaned sediment placed?
People know that the Yellow River is an alluvial river, and the land on the alluvial plain is very fertile, but there is also an upper limit to the fertility of the land, and if too much is deposited, it will cause the land to form soil, which cannot be cultivated, and then it will cause great trouble in grain production.
In addition, the sediment of the Yellow River contains a lot of organic matter, so there are concerns about the impact of these organic substances on human health, and there are also concerns that these organic substances will become vectors of infectious diseases, so cleaning up the sediment means dealing with these problems.
Therefore, it is difficult to artificially clean up the sediment of the Yellow River, and if the country wants to solve the sediment problem of the Yellow River, the only way to solve the sediment problem of the Yellow River is to start from the Loess Plateau and control the Loess Plateau, so that the Loess Plateau can stabilize the water and soil, reduce the input of sediment, and gradually make the water of the Yellow River clearer.
3. How to solve the sediment problem of the Yellow River?
It is very important to manage the problem of the Loess Plateau, because soil erosion on the Loess Plateau will adversely affect not only the Yellow River, but also the inhabitants of the lower reaches of the Yellow River.
Therefore, it is the fundamental way to reduce sediment input by controlling the Loess Plateau from the upstream and stabilizing the water and soil on the Loess Plateau.
The best way to reduce sediment input in the lower reaches of the Yellow River is to carry out greening management.
Greening management can not only stabilize the water and soil of the Loess Plateau, but also reduce the sediment input of the Yellow River, which can protect the ecosystem of the Yellow River.
People will wonder if the trees planted on the Loess Plateau require a lot of water, and if a large number of trees are planted, won't it increase the water consumption of the Yellow River?
In fact, the water volume of the Yellow River is limited, but the soil moisture content of the Loess Plateau is very rich, so as long as you water the saplings enough at the beginning, you can ensure the growth of the trees, and at the same time reduce the land loss of the Yellow River, achieving a win-win effect.
epilogue
The sediment control of the Yellow River is not only an engineering problem, but also requires the ecological awareness and action of the whole society.
Only through scientific ecological and environmental protection can we continue to improve the sediment problem of the Yellow River.
In the process of solving the sediment problem of the Yellow River, it is also necessary to give full consideration to the ecological balance and avoid over-exploitation and man-made damage to the ecological environment, so as not to cause greater disasters.
By harnessing the Loess Plateau and promoting greening, we can not only reduce sediment input, but also improve the local ecological environment, improve land quality, and achieve sustainable development.