Land resources 4

MADE BY : Nupur Branch: IT

Project Guide: Dr. Tanuja Nautiyal

LAND RESOURCES

*OVERVIEW

*What are Land Resources

*Land Degradation - Causes

*Soil Erosion

*Conservation

*Landslides - Causes

*Desertification

*Case Study

*References

WHAT ARE LANDRESOURCES ?

*Land resources can be taken to mean the resources available from the land. the agricultural land, the underground water, the various minerals like coal, bauxite, gold and other raw materials. In a wider sense, land resource can also mean the land available for exploitation, like non agricultural lands for buildings, developing townships etc.

*LAND DEGRADATION

*LAND DEGRADATION

*Land degradation is a process in which the value of the biophysical environment is affected by a combination of human-induced processes acting upon the land.

*CAUSES OF LAND DEGRADATION

Urbanization

Over Exploitation

Over Utilization

Deforestation

Over Population

*SOIL EROSION

*This is a serious problem for people who want to grow crops. If the soil has eroded, the crops will not grow very well.

*Erosion also leaves large holes in the earth, which can weaken buildings and even cause them to collapse.

*SOIL EROSION - CAUSES

*There are many different factors that can cause soil erosion, most can be broken down into two main categories:

*Erosion by Water

*Erosion by Wind

*SOIL EROSION - CAUSES

*CONSERVATION

*Planting wind breaks can be effective.

*Terrace farming can also be effective. People can cut level sides into the side of hills to create a place to grow crops.

*Groins (wooden planks) along the beaches, or they could build sea walls against the cliffs.

*CONSERVATION

*LANDSLIDES

*Landslides are the downward movement of a slope composed of earth materials such as rock, soil or artificial fills. Landslides are also called rock-slide, debris-slide, slump, earth-flow or soil-creep. 

*During construction of roads and mining activities huge portions of mountainous fragile areas are cut down and thrown into adjacent areas and streams. These land masses weaken the already fragile mountain slopes leading to man-induced landslides.