Tundra Tundra
Study guide for Tundra (UPSC Civil Services Prelims & Mains). Access key concepts, syllabus details, prep checklist, and interactive practice questions. Tundra पर UPSC सिविल सेवा परीक्षा अध्ययन गाइड।
Tundra Biome: Arctic, Alpine & Permafrost Dynamicsटुंड्रा बायोम: आर्कटिक, अल्पाइन एवं पर्माफ्रॉस्ट गतिशीलता
Treeless, circumpolar high-latitude and high-altitude biomes characterized by short growing seasons, extreme subzero winter temperatures, and permanently frozen subsoil (Permafrost).
Core Concepts & Provisionsमुख्य अवधारणाएँ एवं संवैधानिक प्रावधान
Conceptual Foundations & Ecosystem Principlesमूल अवधारणाएं एवं पारिस्थितिक सिद्धांत
Treeless, circumpolar high-latitude and high-altitude biomes characterized by short growing seasons, extreme subzero winter temperatures, and permanently frozen subsoil (Permafrost).
Salient Provisions, Adaptations & Mechanismsप्रमुख प्रावधान, अनुकूलन एवं कार्यप्रणाली
• Arctic Tundra: Encircles the North Pole across Siberia, northern Canada, and Scandinavia; low annual precipitation (< 25 cm, polar desert).
• Alpine Tundra: Found at high mountain elevations above the tree line across the world (including High Himalayas).
• Permafrost: Soil or rock remaining at or below 0°C for at least two consecutive years. Active layer (top 10-100 cm) thaws during brief 50-day summer, creating bogs and wetlands.
• Flora & Fauna: Lichens (Reindeer moss), mosses, sedges, dwarf birches, lemmings, Arctic fox, caribou. No deep-rooted trees due to permafrost barrier.
• Climate Threat: Permafrost thawing releases vast quantities of trapped methane and CO2, driving severe climate feedback loops.