Measures to control land desertification, measures to control land desertification

There are many measures to combat desertification, such as:

Set up sand barriers: mainly grass checkered sand barriers, clay sand barriers, fence sand barriers, vertical sand barriers, tiled sand barriers, etc. The grass checkered sand barrier uses wheat straw, straw, reeds and other materials to form a windshield wall on the mobile sand dunes to weaken the erosion of the wind, and at the same time has the effect of intercepting rainfall, which can increase the water content of the sand layer and is conducive to the growth of psammophytes.

Clay sand barriers are piles of clay on sand dunes to a height of 20 30

m of the ridge, spacing 1 2

m, perpendicular to the direction of the wind. The clay sand fixation construction is simple, the sand fixation effect is good, and it has good water retention capacity, but a large amount of clay is required.

Plant management: Desert plant management refers to the sowing of psammophytes in desert areas to stop desert expansion and improve desert land. Psammophytes have the characteristics of less water transpiration, developed mechanical organization and conduction organization, which can resist the attack of strong winds, and transport water and nutrients to the organs in urgent need as soon as possible.

Water Utilization:

The use of water resources is the most important in the process of desert management. The main sources of water in the desert are groundwater, river water and precipitation. However, the precipitation in the desert area is unstable and generally varies with the change of climate, with more precipitation in wet years and less precipitation in dry and warm years.

Desert groundwater is relatively stable, its sand layer is thick, and it has a certain "heat insulation", so that the water can be preserved underground. But this stability is relative and constrained by precipitation. The solution of water resources is mainly considered from the aspects of water withdrawal, water transportation and water-saving irrigation.

Recovery & Reconstruction:

The root cause of the formation and expansion of desertification is the anthropogenic destruction of the desert ecosystem, which is the result of the inherent stability and imbalance within the system caused by the intensive development and utilization of water resources, biological resources and land resources in the system. The real reason for the current serious desertification is not that there is too little artificial vegetation, but that the natural vegetation is too bad. It can be seen that only by protecting and rebuilding desert ecosystems can the momentum of desertification expansion be fundamentally curbed.

1. The main prevention and control measures in semi-arid areas are:

We should readjust the structure of land use that is not conducive to the virtuous cycle of the ecological environment, and rationally arrange the proportion of agriculture, forestry, and animal husbandry.

Desertified abandoned farmland and degraded grassland are enclosed and vegetation restored.

Zonal rotation or rotation is adopted to limit the number of animals carried.

The sand fixation method is mainly based on plant sand fixation, supplemented by engineering measures.

2. The main prevention and control measures in arid areas are:

Inland river basins should be used as ecological units for comprehensive planning, and the proportion of water use in the upstream, middle and lower reaches should be reasonably allocated.

With the oasis as the center, a shelterbelt combining the sand sealing and grass breeding belt on the periphery of the oasis, the sand control forest belt combining trees and shrubs at the edge of the oasis, the narrow forest belt inside the oasis, and the small grid of field protection forest network were established.

For the mobile sand dunes at the edge of the oasis, a protection system combining sand barriers on the surface of the dunes and planting sand-fixing plants in the barriers was adopted.

On the basis of preventing and controlling sand damage, measures to improve the soil should be taken.

Further information: Desertification in the narrow sense (i.e., desertification) refers to the process of environmental change similar to desert landscapes in areas that resemble desert landscapes in fragile ecosystems due to excessive economic activities by humans that disrupt their balance.

That is, to cut down trees indiscriminately, so that the balance of the land is destroyed and turned into sand!

Land desertification: Land degradation in arid, semi-arid and dry sub-humid areas due to a variety of factors, including climate variability and human activities. Desertification in the narrow sense (i.e

Desertification refers to the process of environmental change similar to desert landscapes in areas that resemble desert landscapes due to excessive economic activities by humans in fragile ecosystems.

Land desertification:

It refers to arid and semi-arid areas, where the destruction of ecosystems is caused by the influence of natural factors and human activities, resulting in changes similar to desert environments in the original non-desert areas. In arid and sub-arid areas, under the conditions of arid and windy and loose sandy surface, due to the irrational economic activities of human beings, the environmental degradation process similar to desert landscape has occurred in the areas of the original non-sandy desert, which are mainly marked by aeolian sand activities and undulating sand dunes.

There is not much difference between land desertification and land desertification, but the severity of desertification is higher.

Legal Analysis: Adjust the land use structure that is not conducive to the virtuous cycle of the ecological environment, and rationally arrange the proportion of agriculture, forestry and animal husbandry;

Desertified abandoned farmland and degraded grassland are enclosed and vegetation restored.

Zonal rotation or rotation is adopted to limit the number of animals carried.

The sand fixation method is mainly based on plant sand fixation, supplemented by engineering measures.

Legal basis: "Law of the People's Republic of China on Desertification Prevention and Control" Article 3 The work of desertification prevention and control shall follow the following principles:

1) Unified planning, adapting measures to local conditions, step-by-step implementation, and persisting in the combination of regional prevention and control and key prevention and control;

2) Prevention first, prevention and treatment combined, comprehensive treatment;

3) Combining the protection and restoration of vegetation with the rational use of natural resources;

4) Follow the laws of ecology and rely on scientific and technological progress;

5) Combining the improvement of the ecological environment with helping farmers and herdsmen get rid of poverty and become rich;

6) Combine state support with local self-reliance, combine organizations with the participation of all sectors of society, and encourage units and individuals to contract prevention and control;

7) Safeguard the legitimate rights and interests of those who prevent and control desertification.

Land desertification is when land loses its productivity and ecosystem functions and becomes an arid, barren desert or desert。In order to prevent and control desertification of land, the following measures can be taken:

Vegetation restoration: By planting vegetation such as grass and trees, soil structure and water sources are restored, and ecosystem functions are improved to prevent the further expansion of desertification.

Wind and sand fixation: Adopt methods such as planting shelterbelts, vegetation belts and building stone walls to fix the land and reduce the erosion of wind and sand.

Optimize farming practices: improve soil quality and increase land productivity by using tillage rotation, soil and water conservation, organic fertilizers, etc.

Water resources management: Through the management and utilization of water resources, prevent the overuse and waste of water resources, avoid land salinization, and ensure the sustainable use of water resources.

Policy support: Strengthen the formulation and implementation of policies and regulations, improve public awareness and participation in environmental protection, encourage the application of science and technology, and promote land desertification control.

Adjust the structure of agriculture, forestry and animal husbandry, reduce overgrazing and reclamation, and restore natural ecosystems.

Develop desert economic industries, such as photovoltaic power generation, tourism, etc., to improve the income and environmental awareness of residents in desert areas.

Preventing and controlling land desertification requires the comprehensive application of multiple measures, and the joint participation and efforts of enterprises, enterprises and the public to achieve the goal of sustainable land use and ecological protection.