Soil Resource Management: Agricultural, Livestock, and Forest Uses

Agricultural Land as a Soil Resource

Agricultural land represents the natural humanized environment. Changes in soil horizons result from tillage, fertilizer inputs, sprinkler system installations, and anti-erosion measures. The primary difference between natural and agricultural soil lies in human intervention through fertilization and tillage.

Soil Fertility and Crop Production

Soil fertility is the capacity of the soil to provide essential nutrients for plant growth. Key agricultural products include:

• Cereals
• Tubers
• Fruit trees
• Vegetables

Note: In Catalonia, there is a growing trend of crop abandonment.

Rangeland Soil Use

Rangelands consist of meadows and pastures—expanses of land with grass that result from photosynthesis. These areas support various livestock, including cattle, swine, sheep, goats, poultry, and rabbits.

Livestock Management Methods

• Traditional Herding: A subsistence method based on nomadism and transhumance, extracting performance from beef and dairy cattle.
• Modern Livestock: Breeding systems based on stable or outdoor environments, where animals are fed prepared products and classified by breed.

Forest Soil Use

Forestry involves techniques applied to forest resources to optimize their utility for human needs. There are two primary types of forests:

• a) High Forest: Formed by large trees that reproduce sexually via seeds.
• b) Low Forest: Resources that reproduce vegetatively via shoots from stumps, resulting in smaller sizes compared to those grown from seeds.

Soil Management Strategies

Managing multiple land uses requires specific conservation measures:

• Maintain soil cover with vegetation.
• Align tillage with contour lines (terracing) to manage slopes.
• Prevent canyon erosion using dikes.
• Implement reforestation programs.
• Convert marginal crop areas into stable grasslands.
• Install plant barriers to curb wind erosion.
• Construct walls in areas prone to landslides.
• Develop appropriate urban planning.
• Establish nature reserves to preserve natural systems.
• Prevent the abusive use of fertilizers and pesticides to curb soil pollution.

Landscape Transformation

An environmental study examines all elements that constitute an environment, whereas the landscape is simply the set of visual elements in a determined area. Landscape transformation is caused by internal and external geological processes, vegetation, and human activity.

Types of Landscapes

• Natural: Unchanged by human activity.
• Humanized: Modified by anthropic elements. These can be further categorized into rural, agricultural, urban, and industrial landscapes.