Geography 2022 Paper I 50 marks Elucidate

Q2

(a) Sequential changes in land use and land cover have brought global and regional ecological changes and imbalances. Elucidate. (20 marks) (b) Explain how various aspects of channel morphology are used in transportation, settlement and land use planning, flood control and flood management? (15 marks) (c) What is the relationship between ocean currents and global surface wind systems? Explain with examples how does the gyre in the Northern Hemisphere differ from the one in the Southern Hemisphere. (15 marks)

हिंदी में प्रश्न पढ़ें

(a) भूमिप्रयोग एवं भूआवरण में अनुक्रमिक परिवर्तनों ने वैश्विक एवं प्रादेशिक पारिस्थितिक में परिवर्तन एवं असंतुलन उत्पन्न किया है । स्पष्ट कीजिए । (20 अंक) (b) सरिता आकारिकी के विविध पहलुओं का ज्ञान किस प्रकार परिवहन, बस्ती एवं भूप्रयोग नियोजनों तथा बाढ़ नियंत्रण एवं बाढ़ प्रबंधन में उपयोग किया जाता है वर्णन कीजिए । (15 अंक) (c) महासागरीय धाराओं एवं वैश्विक धरातलीय पवन तंत्रों में क्या अन्तःसम्बन्ध है ? उदाहरणों द्वारा वर्णन कीजिए कि किस प्रकार उत्तरी गोलार्ध के जलधारा घूर्णन दक्षिणी गोलार्ध के जलधारा घूर्णन से पृथक है । (15 अंक)

Evaluate your answer to this question → See all 2022 Geography questions

Directive word: Elucidate

This question asks you to elucidate. The directive word signals the depth of analysis expected, the structure of your answer, and the weight of evidence you must bring.

See our UPSC directive words guide for a full breakdown of how to respond to each command word.

How this answer will be evaluated

Approach

The directive 'elucidate' demands clear explanation with illustrative examples. Structure: brief introduction on interconnectedness of land use, fluvial systems and ocean dynamics; body with ~40% word allocation for part (a) on LULCC and ecological changes, ~30% each for (b) on channel morphology applications and (c) on ocean currents-wind relationships with gyre comparisons; conclusion synthesizing how terrestrial and marine systems interact through global circulation patterns.

Key points expected

  • Part (a): Sequential LULCC stages (deforestation→agriculture→urbanization) and their ecological impacts including carbon cycle disruption, biodiversity loss, hydrological alterations; global examples (Amazon deforestation, Sahel desertification) and regional Indian examples (Green Revolution Punjab, Delhi NCR sprawl)
  • Part (a): Feedback mechanisms—albedo changes, evapotranspiration reduction, soil degradation creating irreversible thresholds; mention of forest transition theory and ecological imbalance indicators
  • Part (b): Channel morphology parameters (width-depth ratio, sinuosity, gradient, discharge patterns) and their specific applications in bridge design, embankment alignment, floodplain zoning, settlement siting; Indian examples from Brahmaputra, Kosi, or Narmada
  • Part (c): Wind-driven surface currents—Ekman transport, geostrophic flow, Coriolis effect; explicit relationship between trade winds/westerlies and current direction
  • Part (c): Gyre differences—Northern Hemisphere (subtropical/subpolar, clockwise rotation, intensified western boundary currents like Gulf Stream/Kuroshio) vs Southern Hemisphere (counter-clockwise, Antarctic Circumpolar Current dominance, weaker western boundaries); specific examples of Brazil Current vs East Australian Current asymmetry

Evaluation rubric

DimensionWeightMax marksExcellentAveragePoor
Concept correctness22%11Demonstrates precise understanding of LULCC drivers and ecological feedbacks in (a); correctly identifies morphometric parameters (sinuosity, hydraulic geometry) and their engineering applications in (b); accurately explains Ekman spiral, geostrophic balance, and gyre asymmetry causes (continental barriers, wind stress curl) in (c) with correct rotational directionsCovers basic LULCC stages and some ecological effects; mentions channel shape for planning but confuses cause-effect relationships; describes currents and winds separately without clear dynamic linkage, may confuse gyre rotation directionsConflates land use with land cover; confuses channel morphology with drainage patterns or basin characteristics; fundamentally misunderstands wind-current forcing or states incorrect gyre rotation; significant factual errors across parts
Map / diagram18%9Includes three distinct visuals: (a) schematic of LULCC transition with feedback loops or global map of deforestation hotspots; (b) cross-section/channel planform diagram showing morphometric parameters; (c) world map with wind belts and current arrows showing gyre asymmetry with western boundary intensification labeledProvides two relevant diagrams, typically missing either the LULCC schematic or the gyre comparison; diagrams present but lack key labels or show generic rather than specific featuresSingle diagram or none; diagrams are decorative without analytical value; incorrect orientation, missing legends, or mislabeled features that demonstrate conceptual confusion
Indian regional examples20%10For (a): specific cases like Punjab groundwater depletion, Western Ghats fragmentation, or Sundarban land use change; for (b): detailed reference to Kosi's avulsion history, Brahmaputra's braided morphology affecting settlements, or Yamuna floodplain planning in Delhi; for (c): mention of Somali Current's seasonal reversal or Indian Ocean gyre influence on monsoonMentions India in passing (e.g., 'deforestation in India') without specific locations; generic reference to 'Indian rivers' for channel morphology; limited or no Indian oceanographic exampleNo Indian examples despite multiple opportunities; or factually incorrect examples (e.g., citing Himalayan deforestation patterns that don't match actual spatial distribution)
Spatial analysis20%10Explicitly analyzes spatial patterns: (a) regional differentiation of LULCC impacts (tropical vs temperate, core vs periphery); (b) downstream changes in channel morphology, lateral vs vertical erosion zones, floodplain spatial zoning; (c) latitudinal variation in current patterns, basin-scale circulation differences, spatial asymmetry in gyre structure with explanationDescribes spatial patterns without analytical depth; lists locations without explaining spatial relationships; treats examples as isolated cases rather than interconnected systemsAspatial treatment—discusses processes without locational context; confuses spatial scales (local vs regional vs global); no recognition of spatial variation or pattern
Application / policy20%10Connects to actionable frameworks: (a) REDD+, LULCF in UNFCCC, India's National Action Plan on Climate Change, watershed management programs; (b) specific engineering applications—Farraka Barrage design, embankment policy in Bihar, RBO flood forecasting, riparian buffer regulations; (c) shipping route optimization, fisheries management through current prediction, marine protected area zoningMentions generic policy relevance without specificity; states that channel morphology 'helps in planning' without elaborating how; notes currents affect navigation without policy connectionNo policy or application dimension; purely theoretical treatment; or irrelevant policy references that don't address the specific geomorphological/oceanographic processes discussed

Practice this exact question

Write your answer, then get a detailed evaluation from our AI trained on UPSC's answer-writing standards. Free first evaluation — no signup needed to start.

Evaluate my answer →

More from Geography 2022 Paper I