What are the components of soil?

The main components of soil include minerals, organic matter, soil moisture, and soil air. Minerals make up a large proportion of the soil, mainly various silicates.

Its specific composition varies depending on the nature of the rock formations in which the soil is formed. The most important of organic matter is humus.

It is a complex nitrogenous compound formed by plant residues under the action of microorganisms. The size of soil particles varies, including sand, silt, mud, and gum.

The functional role of the soil

1. Adjustment function

The function of soil as a component of nature in the interaction with other environmental factors. Hydrological cycle.

Function; nutrient cycling function; carbon storage function; buffer filtering function; Break down the conversion function.

2. Animal and plant habitat functions

With the aim of protecting rare flora and fauna, we ensure that the soil provides habitat for plants and animals.

3. Crop production function

Soil can fix plant roots, has natural fertility, and can promote crop growth for agricultural production. This is one of the earliest recognized functions of soil, including agriculture, forestry production, and food crops.

and cash crop production.

4. Functions of human settlements

As an environment for human life and habitation, soil provides buildings, leisure and entertainment places.

Maintain the function of healthy human development. Healthy soil plays an important role in improving the quality of the urban environment.

5. The function of natural and cultural historical archives

Soil has the function of recording natural changes and human history as a historical archive.

There are minerals, organic matter, soil moisture, and soil air in the soil.

It is composed of various granular minerals, organic matter, water, air, microorganisms, etc., and can grow plants. Soil is composed of minerals weathered from rocks, organic matter produced by the decomposition of animal and plant and microbial residues, soil organisms (solid substances), water (liquid phase substances), air (gas phase substances), and oxidized humus.

Solid matter includes soil minerals, organic matter and nutrients obtained by microorganisms through light sterilization. Liquid matter mainly refers to soil moisture. Gases are the air present in the pores of the soil.

These three types of substances in the soil constitute a contradictory unity. They are interconnected, mutually restrictive, provide the necessary living conditions for crops, and are the material basis of soil fertility.

The amount of organic matter is an important indicator of soil fertility, and it is closely combined with minerals. In the general cultivated layer, the organic matter content only accounts for the dry weight of the soil, and the cultivated layer is less, but its role is great, and the masses often call the soil containing more organic matter "oil soil".

Soil is made up of minerals, organic matter, soil moisture and soil air. Soil is rich in minerals, organic matter, living organisms, water and air. Nitrogen, phosphorus, potassium, iron, tin, aluminum, copper, selenium, sulfur, calcium, carbon, manganese, molybdenum, zinc, and boron can be seen in the detailed analysis.

Soil profile originSpeaking of soil, it is reminiscent of the Loess Plateau in the great northwest.

The majestic mountains and the loess layer hundreds of meters and thousands of meters thick make people dizzy.

The sand and stone used in construction here cost a lot of money to buy, and the common people want a stone to press the vegetable jar, and they have to work hard to get it.

About hundreds of millions of years ago, the earth was littered with bare rocks. Due to the long-term severe cold and heat, as well as the action of dryness, wetness, cold, heat and wind, the thermal expansion and cold contraction.

Wind, water, sand and gravel.

Under the friction, the rock cracks collapse, and the whole rock gradually breaks apart, a process called weathering.

The main components of soil are minerals, organic matter, living organisms, water, and air. A detailed analysis can be seen in: nitrogen, phosphorus, potassium, iron, tin, aluminum, copper, selenium, sulfur, calcium, carbon, manganese, molybdenum, zinc, boron and so on.

Soil is made up of layers of minerals of varying thicknesses. The difference between soil and parent layer is manifested in morphology, physical properties, chemical properties and mineralogical properties.

Due to the earth's crust, water vapor.

Atmosphere and biosphere.

The soil layer is different from the parent layer. It is a mixture of minerals and organic matter, in solid, gaseous and liquid states. Loose soil particles combine to form a form of soil filled with gaps.

These pores contain dissolved solutions and air . Most of the earth's soils were formed later than the Pleistocene, and only a few soil components were formed earlier than the Tertiary period.

Soil minerals are rocks that have undergone weathering.

Mineral particles of different sizes (sand, soil and gum) formed. There are many types of soil minerals and complex chemical composition, which directly affects the physical and chemical properties of soil.

It is one of the important nutrients of crops.

Solid soil particles composed of minerals and humus are the main body of the soil, accounting for about 50% of the soil volume, and the pores between the solid particles are occupied by gas and water.

The vast majority of soil gases are made up of the atmosphere.

A small part of the incoming oxygen, nitrogen, etc., is carbon dioxide produced by life activities in the soil.

and water vapor, etc. The moisture in the soil enters the soil mainly from the surface and includes many dissolved substances.

There are four main components of soil:

1. Inorganics.

Such as small granular rocks, clay.

2. Organic matter such as the decay of the corpses of plants and animals, also known as humus.

3. Air. 4. Water.

The soil is a loose porous body filled with large and small honeycomb-like pores. Soil pores with a diameter of millimeters are called capillary pores. The water present in the pores of the soil capillary can be directly absorbed and utilized by the crop, and at the same time, it can also dissolve and transport soil nutrients.

Capillary water can move up and down, left and right, but the speed of movement depends on how tight the soil is.

Features:

Soil pollution is insidious and lagging. Air pollution, water pollution.

Problems such as waste pollution are generally more intuitive and can be detected through the senses. Soil contamination, on the other hand, is often determined through analysis of soil samples, residue testing of crops, and even by studying the impact on human and animal health. As a result, soil contamination often lags a long time from the time it is contaminated to the time it becomes problematic.

Such as Japan's "painful disease."

It took 10 or 20 years before it became known.

Cumulative nature of soil contamination. Pollutants generally migrate more easily in the atmosphere and water than in soil. This makes the pollutant substances in the soil not as easy to disperse and dilute as in the atmosphere and water, so it is easy to accumulate in the soil and exceed the standard, and at the same time, the soil pollution has a strong regional nature.

Soil contamination is irreversible. Soil contamination by heavy metals is basically an irreversible process, and the contamination of many organic chemicals also takes a long time to degrade. For example:

It may take 100,200 years for soils contaminated with certain heavy metals to recover.

There are four main components of soil:

1. Inorganic matter, such as small granular rocks and clay;

2. Organic matter such as the decay of the corpses of plants and animals, also known as humus.

3. Air. 4. Water.

Soil is a mixture of minerals, organic matter, and living organisms, as well as moisture and air, among other things. By weight, minerals account for 90 95% or more of the solid fraction (soil dry weight), and organic matter accounts for about 1 10%, indicating that the soil composition is dominated by minerals. Soil organic matter is the organic compounds that exist in various forms in the soil.

In addition to this, there is also soil solution, which is a general term for soil moisture and the dissolved and suspended matter it contains. Soil solutions are the medium through which plants and microorganisms absorb nutrients from the soil and are the main route for the migration of pollutants in the soil.

Minerals, organic matter, gases, moisture.

You tell me your email address. I can send you a ppt of the section on the material composition and structure of soil, the structure and the physical properties of soil in the geology that I have studied.

There are more to less arranged as oxygen, silicon, aluminum, iron, calcium, sodium, potassium, magnesium, and hydrogen.

Soil is composed of a variety of components, mainly including the following aspects:

1.Minerals: Minerals are inorganic particulate matter in the soil, mainly formed by the weathering and decomposition of rocks. Common minerals are quartz, milled feldspar, mica, etc., which determine the texture and color of the soil.

2.Organic matter: Organic matter is mainly composed of plant and animal residues, secretions, and microbial metabolites. Organic matter plays an important role in soil fertility and water retention, as well as its color and structure.

3.Moisture: Water in the soil is essential for plant growth. The amount of moisture content depends on factors such as the texture of the soil, drainage, and the amount of precipitation.

4.Air: Air in the soil is essential for root respiration and microbial activity. The pores and capillary spaces in the soil can hold air.

5.Microorganisms: There are a large number of microorganisms in the soil, including bacteria, fungi, protozoa, etc. They are involved in the decomposition of organic matter, nutrient transformation, and the maintenance of soil ecosystems.

6.Soil solution: The solution in the soil is mainly composed of water and inorganic ions and organic matter dissolved in water. Ions in soil solutions are essential for nutrient uptake by plants.

These are the main components of soil, and their content and proportion will vary depending on the soil type, geographical location and environmental conditions.

The substance of rubber in the soil can be summarized into three parts: the solid part, the liquid part, and the gas part. The constituent substances of the three parts are:

1. The solid matter of Liang Douchen includes soil minerals, organic matter, such as the decaying corpses of plants and animals, and nutrients obtained by microorganisms through light inhibition and sterilization;

2. Liquid substances mainly refer to soil moisture;

3. Gas is the air present in the pores of the soil.