Arresting Soil Erosion-Visualizing its Causes, Effects and Conservation YouTube Lecture Handouts

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SOIL EROSION

• Naturally occurring process that affects all landforms.

• It is the washing or blowing away (by water or wind) of the top layer of soil.

Rain and Cloud for Soil Erosion

Impact of raindrops on the soil surface can break down soil aggregates and disperse the aggregate material.

Wind for Soil Erosion

• It is a serious environmental problem.

• Attracting the attention of many across the globe.

• Occurring mostly in:

  • Flat, bare areas

  • Dry, sandy soils

  • or anywhere the soil is loose, dry, and finely granulated

Slope

Slope

Human Causes

Natural Causes

Striking Forces

Effects of Soil Erosion

• Effects of soil erosion can be felt on-site, meaning at the site of soil disruption. So, soil quality is reduced.

• Crops are damaged due to sand storms.

SOIL CONSERVATION

It is the prevention of soil loss from erosion or reduced fertility caused by over usage, acidification, salinization or other chemical soil contamination.

AFFORESTATION

• It is the establishment of forest or stand of trees in an area where there was no previous tree cover.

• It is the process of planting large numbers of trees on land.

• It is necessary to combat the issues of:

  • Global warming

  • Soil erosion

  • Pollution

• Maintenance of biodiversity and ecological balances.

Wind

Agronomic Measures

Mulching

• It enriches and protects soil.

• Helping provide a better growing environment.

• One of the simplest and most beneficial practices

Maintain Soil Fertility

Mechanical Measures

Types of Soil

• Hard soil

• Break Soil

• Sub Soiling

-Manishika