[Soil Heavy Metal Content, Pollution, and Influencing Factors in Typical Farming Area of Sichuan Basin]

Shu-Ling Liu1,2, Mei Wu1,2, Zhi-Yuan Liu1

  • 1School of Geography and Tourism, Chongqing Normal University, Chongqing 401331, China.

Related Concept Videos

Soil Characteristics01:29

Soil Characteristics

Soil CharacteristicsSoil is an essential part of Earth’s surface that supports plants, animals, and ecosystems. It is made up of minerals, organic matter, water, and air, and its characteristics vary based on climate, rock type, and biological activity. Different soil types affect plant growth, water movement, and human activities like farming and construction. By studying soil characteristics, scientists can better understand ecosystems, manage land use, and support environmental...
The Soil Ecosystem02:23

The Soil Ecosystem

Plants obtain inorganic minerals and water from the soil, which acts as a natural medium for land plants. The composition and quality of soil depend not only on the chemical constituents but also on the presence of living organisms. In general, soils contain three major components:
21.3K
Types of Soils01:26

Types of Soils

Types of SoilsSoil is not the same everywhere. It comes in different types, each with unique properties that affect plant growth, water retention, and how the land is used. The three main types of soil are sand, silt, and clay. Most natural soils are a mixture of these three soil types, called loam—a rich, balanced soil ideal for farming. Sand – Has large particles and drains water quickly but doesn't hold nutrients well.Silt – Has medium-sized particles, feels smooth, and holds water...
30
Soil Formation01:27

Soil Formation

Soil FormationSoil is one of Earth’s most important natural resources. It forms over long periods from the breakdown of rocks and the remains of plants and animals. Soil supports plant growth, stores water, and provides a home for many organisms. The process of soil formation is slow and involves weathering, decomposition, and the mixing of organic and inorganic materials. Studying soil allows scientists and engineers to create strategies for preserving it and reducing erosion.Science and...
Soil Erosion01:27

Soil Erosion

Soil ErosionSoil is one of Earth’s most valuable natural resources, but it can be lost through erosion—the process of soil being worn away by wind, water, and human activities like farming, deforestation, and construction. When protective plant cover is removed, the soil becomes more vulnerable to being washed or blown away. Soil erosion reduces the land’s ability to support plant growth, affects water quality, and can even trigger natural disasters like landslides. Learning how and why...
Avoiding Soil Loss01:26

Avoiding Soil Loss

Avoiding Soil LossSoil is essential for plant growth, water filtration, and supporting ecosystems, but it can be lost due to erosion, deforestation, and poor farming practices. When soil is removed faster than it can be replaced, it leads to reduced fertility, increased flooding, and damaged landscapes. Scientists and engineers work to develop solutions to prevent soil loss and maintain healthy land for farming, construction, and natural habitats. Science and Engineering Practices (SEP):...