Is the main way to combat soil erosion is afforestation?

In recent years, the area of forest land has been increasing, but soil erosion is still serious in some places due to problems such as vegetation species, planting techniques or management. As a soil and water conservation worker, the author has conducted surveys in some towns and villages, and found that in many places, the phenomenon of emphasizing planting and neglecting management is widespread in afforestation work, and to a certain extent, man-made soil erosion has occurred.

Causes. Through the investigation, the author believes that the main causes of soil erosion in afforestation are as follows:

The first is to excavate tree roots, and a large amount of loose soil causes soil erosion. Because the planting of trees and the excavation of tree roots destroy the original stability of the soil layer, it objectively creates conditions for soil erosion. In addition, the slopes of the mountains are steep in some places, and the loose soil is unstable, which can easily cause the spoil to slide.

Second, the unreasonable combination of planting varieties causes soil erosion. In some places, attention is not paid to the combination of "trees, shrubs and grasses" in afforestation, and the variety mix is very unreasonable.

The third is to plant trees and grasses and ignore management, resulting in low survival rate and soil erosion. In some places, there is a lack of effective management of the planted trees, and "trees are planted every year but not forests", which exacerbates the occurrence of soil erosion.

Fourth, there is no scientific planning and random planting causes soil erosion. Afforestation also requires scientific planning, especially for the development of forest and fruit industry, which has a large amount of moving soil, and must be planted at a contour level, otherwise it is easy to aggravate the soil decline after the mountain is prepared.

First, it is necessary to plan scientifically. When planting trees, it is necessary to make a rational layout and minimize unnecessary loosening of soil. In places with flat terrain and poor soil, the afforestation density should not be too large, and can be planted in a strip or block mixed way, and in places with heavy soil erosion, dense planting should be carried out.

The second is to excavate the tree roots reasonably. During the excavation process, great attention should be paid to the stacking of spoil, and try to place it above the tree and on a flat place to reduce the soil slide.

Third, it is necessary to adapt measures to local conditions and scientifically match. According to the local site conditions, the forest should be forested, and the grass should be grassed. For example, in hilly and mountainous areas with serious soil erosion, afforestation should be mainly based on the creation of mixed shelterbelts.

The main tree species suitable for planting in the hard texture of Liangqiao are Pinus tabuliformis, Juniper, S. superba and sea buckthorn. In the depression with thick soil layer and loose structure, suitable tree species include Pinus tabuliformis, Chinese fir, superba superba, neem and so on. In saline-alkali areas, afforestation such as Populus euphratica and Tamarix can be selected.

It is best to plant native shrubs and plants, try to achieve a combination of "trees and shrubs", and achieve canopy closure of the woodland as soon as possible.

Fourth, we should try to achieve contour planting. In this way, it can be intercepted step by step and reduce soil erosion. Fifth, it is necessary to strengthen the management of the planted trees to ensure the survival rate. Afforestation must pay attention to quality, ensure the survival rate and preservation rate of forest trees, and avoid the phenomenon of "planting trees every year without seeing forests".

Afforestation can conserve water and soil, **vegetation coverage is low, **every rainy season, there will be a large amount of sediment into the river, destroying the fields, filling up the riverbed, silting up the estuary, and causing great harm. To curb soil erosion, it is necessary to plant trees, because trees have a root system as large as a canopy and can hold on to the soil like giant hands. The water of the soil that is caught is constantly absorbed and stored by the tree roots.

According to statistics, one acre of forest stores 20 tons more water than the area without forest.

<> measures that can be taken to prevent soil erosion are briefly described as follows:

Method 1: Engineering measures. Middle.

1. The water storage project is built upstream of the soil erosion formation area.

2. The drainage project is built above the formation area and on the side.

3. Blocking engineering, sand dam valley mill engineering, retaining wall.

engineering, slope protection engineering.

Repair terraces, etc., slope change project, horizontal steps on the hillside, submerged dam project.

4. Drainage and diversion projects, repair diversion embankments, dams, drainage ditches, aqueducts, rapids channels, Mingtong, and ditch renovation projects.

5. Stop the dredging project, repair the dredging site, and stop the mud dam.

6. Farmland engineering, water to drought, canal seepage prevention, slope to ladder.

Method 2: Biological measures.

1. Forestry measures, the construction of artificial forest vegetation, the construction of soil and water conservation forests, bed protection and erosion prevention forests, and berm and beach forests.

2. Agricultural measures, soil and water conservation farming measures.

3. The first cultivation of animal husbandry measures, moderate grazing, improved pasture, change grazing to captivity, and choose good soil and water conservation.

Every year, rain erosion will cause a lot of soil erosion, what can you do to prevent soil erosion?

Afforestation is an important way to protect the soil, but it cannot simply be said that it is a fundamental way to avoid soil erosion and maintain the soil. Here's why:

1.Afforestation can prevent soil erosion and reduce soil erosion, but it is not the fundamental method. Soil erosion is caused by natural factors such as water and wind and human activities, and afforestation only slows down this process to a certain extent, but it cannot be completely avoided.

2.Afforestation can increase the organic matter content of the soil, improve the soil structure, and increase the water retention capacity of the soil, but it is not a fundamental method. Afforestation is just one of the factors that depend on the quality and maintenance of soils, including soil type, climate, vegetation, land use patterns, etc.

3.Afforestation can improve the stability of the ecosystem and the quality of the ecological environment, but it is not a fundamental method. Soil protection needs to start from many aspects, including improving agricultural production methods, controlling land development and utilization, and strengthening land management.

Therefore, afforestation is one of the important means to protect the soil, but it cannot simply be said that it is a fundamental way to avoid soil erosion and maintain the soil. Soil protection requires a combination of factors and measures to achieve the best results.