Rajasthan and Environment/Ecology

Physical Features of Rajasthan

Rajasthan, the largest state in India by area (342,239 sq km), exhibits diverse physical features. The state can be broadly divided into four physiographic regions: the Western Desert (Thar Desert), the Aravalli Range, the Eastern Plains, and the South-Eastern Plateau. The Thar Desert, covering about 60% of Rajasthan, is characterized by sandy terrain, dunes, and sparse vegetation. The Aravalli Range, one of the oldest mountain ranges in the world, runs diagonally from southwest to northeast, influencing climate and river patterns. The Eastern Plains are fertile, with alluvial soils supporting agriculture, while the South-Eastern Plateau comprises rocky terrain and forested areas. Major peaks include Guru Shikhar (1722 m), the highest point in Rajasthan, located in Mount Abu. The state's geographical location influences its climate, water resources, and biodiversity. ⭐ परीक्षा महत्वपूर्ण तथ्य: • Rajasthan is India's largest state by area (342,239 sq km). • Guru Shikhar is the highest point (1722 m). • Aravalli Range is among the world's oldest mountain ranges. • Questions often ask about highest point, area, and physiographic divisions. • Remember 'Thar Desert' covers western Rajasthan; 'Aravalli Range' divides east and west.

• Rajasthan covers 10.4% of India's land area (342,239 sq km).
• Thar Desert occupies approximately 60% of the state's area.
• Aravalli Range extends about 692 km across Rajasthan.
• Guru Shikhar in Mount Abu is the highest peak at 1722 meters.
• Eastern Plains are fertile due to alluvial deposits from rivers.
• South-Eastern Plateau is rich in minerals and forests.
• 📌 Thar Desert: Large arid region in western Rajasthan.
• 📌 Aravalli Range: Ancient mountain range running SW-NE.
• 📌 Guru Shikhar: Highest peak in Rajasthan.

Climate of Rajasthan

Rajasthan's climate is predominantly arid and semi-arid, influenced by its geographical location and topography. The state experiences extreme temperatures, with summer highs often exceeding 45°C and winter lows dropping below 0°C in some regions. The Western Desert region is characterized by hot, dry winds and low humidity, while the Aravalli Range moderates temperatures and increases rainfall in its vicinity. The state receives an average annual rainfall of about 570 mm, with the highest precipitation in the south-eastern districts (e.g., Jhalawar, Kota) and the lowest in the western desert (e.g., Jaisalmer, Barmer). Rajasthan faces frequent droughts due to erratic monsoon patterns. The climate affects agriculture, water availability, and biodiversity, making adaptation crucial for local communities. ⭐ परीक्षा महत्वपूर्ण तथ्य: • Churu recorded 50.8°C in June 2019, India's highest temperature. • Jhalawar receives highest rainfall; Jaisalmer receives lowest. • Rajasthan faces droughts almost every 3-4 years. • Questions often focus on rainfall distribution, temperature extremes, and drought-prone areas. • Remember 'Churu' for highest temperature, 'Jhalawar' for highest rainfall.

• Average annual rainfall: 570 mm; varies from 100 mm (Jaisalmer) to 1000 mm (Jhalawar).
• Summer temperatures can exceed 45°C (Churu, Phalodi).
• Winter temperatures can fall below 0°C (Mount Abu, Churu).
• Aravalli Range increases rainfall in eastern and southern districts.
• Frequent droughts due to erratic monsoon.
• Hot, dry winds (Loo) are common in summer.
• 📌 Loo: Hot, dry summer winds.
• 📌 Monsoon: Seasonal rainfall pattern.
• 📌 Drought: Prolonged period of deficient rainfall.