Which is the main responsible factor for desertification?

Which is the main responsible factor for desertification?

Overgrazing: Overgrazing is one of the major factors of land degradation or desertification.

What is the most common cause of desertification?

Overgrazing is the major cause of desertification worldwide. Other factors that cause desertification include urbanization, climate change, overuse of groundwater, deforestation, natural disasters, and tillage practices in agriculture that make soils more vulnerable to wind.

What has caused desertification?

Human causes of desertification include overgrazing, the buildup of salt in irrigated soils, and topsoil erosion. Permanent changes in climate, particularly rainfall, are responsible for natural desertification. Extended droughts may mimic desertification, but vegetation may recover when seasonal rains return.

Which of the following each responsible for desertification?

Deforestation is responsible for desertification. Desertification happens because deforestation influences the properties of soil. When there is no vegetation left due to deforestation, the soil erosion occurs at a very high rate.

What human activities lead to salinization?

Human-induced factors that may lead to salinisation or sodification: • irrigation with waters rich in salts; • rising water table due to human activities (filtration from unlined canals and reservoirs, uneven distribution of irrigation water, poor irrigation practices, improper drainage); • use of fertilisers and other …

Is Mining responsible for desertification?

A slow process in which land productivity and resilience steadily decline, overgrazing, deforestation and unsustainable agricultural practices are the main causes of desertification. Mining and climate change are also major causes. It is responsible for 10.98 per cent of desertification in the country.

Which are causes of desertification quizlet?

What causes desertification? Over cultivation, overgrazing, deforestation, slash and burn, climate change.

What causes desertification in South Africa?

Poverty-related agricultural practices are a major contributor to desertification. Continuous cultivation without adding supplements, overgrazing, lack of soil and water conservation structures, and indiscriminate bushfires aggravate the process of desertification.

What type of irrigation causes salinization?

Irrigation with marginal water (e.g., brackish water and wastewater) with a high content of soluble salts directly affects soil salinity (Sparks, 1995). When the water evaporates from the surface, the salts are left behind. The excess salts cause many types of crops to wither and die.

What irrigation method causes salinization?

Salinization is a major problem associated with irrigation, because deposits of salts build up in the soil and can reach levels that are harmful to crops. Drip irrigation is a technique that can be used in areas where the ground water level is high and in danger of suffering from a high salt content.

Is Mining & quarrying are the cause for desertification?

What are two causes of desertification quizlet?