What are the dangers of soil contamination?

The main hazards of soil pollution are:

1. It leads to a decrease in crop yield and the quality of agricultural products.

2. Polluting groundwater and surface water.

3. Affect the quality of the atmospheric environment.

4. Endangering human health.

The pollutants entering the soil mainly have different destinations such as fixation, volatilization, degradation, dispersion and leaching due to their different types and properties. Heavy metal ions are mainly ions that can make soil inorganic and organic colloids stably adsorb.

Including the ions that are obligate adsorption with oxides and tightly bound to humin, as well as insoluble metal hydroxides, carbonates and sulfides produced in the chemical equilibrium of soil solutions, most of which are fixed in the soil and difficult to eliminate; Although some chemical reactions can mitigate its toxic effects, they are still a potential threat to the soil environment.

In addition to the decline of soil quality, crop yield and quality, soil pollution is more serious because the soil has an enrichment effect on pollutants, and some toxic pollutants, such as mercury and cadmium, are enriched into crop fruits, and poisoning occurs after humans or livestock eat them.

For example, due to the long-term use of industrial wastewater for irrigation, the content of heavy metal cadmium in the soil and rice in Zhangshi Irrigation District in Shenyang, Liaoning Province has exceeded the standard, and humans and animals cannot eat it. The soil can no longer be used as arable land, but can only be used for other purposes.

Soil pollution can be broadly divided into four main categories: to cash crops.

harm to material qualities, harm to human health, harm to other environments.

1. Soil pollution leads to serious direct economic losses.

According to statistics, more than 10 million tons of grain are reduced by heavy metals in land pollution every year, and as many as 12 million tons of grain are polluted by heavy metals every year, with a total economic loss of at least 20 billion yuan.

2. Pollution of article quality includes excessive and close to critical levels of heavy metals such as cadmium, chromium, arsenic, and lead in grain, vegetables, fruits and other foods in many places. In some areas, the polluted irrigation has made the taste of vegetables worse, easy to rot, and even unpleasant odors.

3. Soil pollution is serious to human beings is that soil will accumulate pollutants in plants (crops) and enrich into human bodies and animals through the food chain, and some toxic pollutants, such as mercury and cadmium, are enriched into crop fruits, and poisoning occurs after humans or livestock eat them. Now there are multiple cancers.

That's why.

4. Environmental pollution, such as polluted topsoil with high concentration of heavy metals, is easy to enter the atmosphere and water bodies under the action of wind and water to form acid rain.

Poisonous water and other phenomena.

Knowing that soil pollution harms crops, people, the environment, and so many other hazards, I want to protect the environment.

Start from me, start from the bits and pieces of life, and reduce or eliminate soil pollution.

1. Soil pollution leads to serious direct economic losses.

Pollution of crops and loss of yields. There is a lack of systematic investigation data on the economic losses caused by various types of soil pollution. Taking soil heavy metal pollution as an example, the country's grain production is reduced by more than 10 million tons every year due to heavy metal pollution, and the grain polluted by heavy metals is also as high as 12 million tons per year, with a total economic loss of at least 20 billion yuan.

2. Soil pollution leads to the continuous decline of biological quality.

The soil in most of China's urban suburbs has been polluted to varying degrees, and the content of heavy metals such as cadmium, chromium, arsenic, and lead in grain, vegetables, fruits and other foods in many places exceeds the standard and is close to the critical value. In addition to the hygienic quality of food, soil contamination also significantly affects other qualities of crops. In some areas, the polluted irrigation has made the taste of vegetables worse, easy to rot, and even unpleasant odors. The storage quality and processing quality of agricultural products cannot meet the requirements of deep processing.

3. Soil pollution endangers human health.

Soil pollution will cause pollutants to accumulate in plants (crops) and enrich them into human and animal bodies through the food chain, endangering human and animal health, causing cancer and other diseases.

4. Soil pollution leads to other environmental problems.

After the land is polluted, the polluted topsoil with high concentrations of heavy metals is easy to enter the atmosphere and water bodies under the action of wind and water power, respectively, resulting in other secondary ecological and environmental problems such as air pollution, surface water pollution, groundwater pollution and ecosystem degradation.

Land is the guarantee of everyone's material life, and land is closely related to our lives. If the land is polluted, what we eat will be polluted. So do you know the dangers of soil pollution?

What is soil pollutionLand pollution refers to some things used in my life will cause pollution to the land, the most serious of which is the serious pollution caused by the heavy metal plant, heavy metals will bring some compounds to cause great damage to the land, at the beginning it will not have a great impact, but over time, the harmful substances of the soil will be more and more, exceeding the self-purification ability of the soil, at this time it will cause changes in soil structure, organization, and function, some microbial activities will be inhibited, and serious will lead to the death of microorganisms. At this time, harmful substances will decompose into the soil and gradually pass through the soil to plants, and finally will be absorbed by the human body, or Hahui will pass through the soil to water, and finally into the human body, so soil pollution directly affects people's health and will endanger people's bodies, which is land pollution.

The dangers of soil contaminationSoil pollution leads to serious direct economic losses, pollution of crops, and reduced yields. Soil pollution will cause pollutants to accumulate in plants and enrich into human and animal bodies through the food chain, endangering human and animal health. Soil pollution will also lead to other environmental problems, after the land is polluted, the polluted topsoil with high concentration of heavy metals is easy to enter the atmosphere and water bodies under the action of wind and water power, resulting in air pollution, surface water pollution, groundwater pollution and ecosystem degradation and other secondary ecological and environmental problems.

1. Threats to national food security and food security. Soil pollution has led to a decline in the quality of cultivated land, which directly threatens the red line of 1.8 billion mu of cultivated land, resulting in excessive levels of heavy metals in grain and agricultural products, affecting food safety.

2. Endangering human health. After the heavy metals in the soil enter the human body through the food chain, they have the hazards of carcinogenic, teratogenic and mutagenic.

3. Affecting social stability. The prevention and control of soil pollution involves the resettlement of workers in relocated industrial and mining enterprises, and the compensation for damage to farmers' economy and people's health, etc., and if not properly handled, it will affect social harmony and stability.