Key Points on Desertification

UN's Focus on Desertification

2006 Highlight: It was the International Year of Deserts and Desertification, aiming to boost global awareness.
Impact on People: Semi-arid zones support about 2 billion people across 100+ countries.
Economic Loss: Deserts expanding equals a loss of $42 billion annually in agricultural production, leading to increased food insecurity and poverty.

Deserts are spreading, and new ones are popping up.
Satellites are helping keep track of desertification by monitoring temperature, humidity, and dust levels.

What's Happening: The Sahara is inching southwards due to desertification, affecting the Sahel area, which is a transition zone between desert and grasslands.
Population: Approximately 50 million people live on around 5.4 million hectares in countries like Sudan and Ethiopia.
Farming Woes: Constant cropping of crops like sorghum, cotton, and peanuts is degrading the land and harming food security.
Solution: The Great Green Wall project aims to plant a 7,000 km long and 15 km wide belt of trees from Senegal to Ethiopia.

Preventing Sandstorms: China is also planting a continuous wall of trees to stop sandstorms in Northeast Asia.
Timeline: This project started in 1978 and is slated for completion by 2050.

Location: The Thar Desert stretches across western India and southeastern Pakistan, measuring 800 km long and 400 km wide.
Climate: It’s hot and dry with only 100-500 mm of rain yearly.
Soil Issues: Sandy, porous, and low humus soils lead to saline and unproductive agricultural conditions.
Desertification Causes: Overgrazing and poor farming techniques have exacerbated the situation.

Indira Gandhi Canal: Built post-India's independence in 1947 to bring Himalayan water into the desert, aiming to combat desertification.
Other Strategies:
- Fuelwood plantations and fast-growing species like eucalyptus.
- Shelters to block wind (often exceeding 150 km/h).
- Stabilizing sand dunes, aerial seeding, and introducing better pasture grasses.
- Promoting silvopasture to combine forestry and grazing.

Remember, desertification isn't just an environmental issue—it's a real economic and social struggle for millions. 🌍🌱