GS1 · 15 marks · 250 words

What are the geographical factors responsible for the growth of mangrove vegetation in India? Also highlight its role in coastal ecology.

Answered by 4 toppers · CSE 2025

Syllabus: Geographical features and their location-changes in critical geographical features (including water-bodies and ice-caps) and in flora and fauna and the effects of such changes.

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The toppers’ answers

Pakshal SecretryAIR 8 · CSE 2025 · 215 wordsTheir whole copy

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As per FSI 2023 report India has around 4000+ km² and 0.6% of its land under Mangroves. Also we are home to world's largest Sunderbans mangroves.

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Geographical factors

  1. Tropical Climate → Suitable for mangroves
  2. Large coastline → 11,098 km → provide brackish water condition
  3. Presence of wetlands → edge effect e.g. Sunderbans wetland
  4. Presence of peat rich and saline Coastal soil
  5. Areas of low depth → due to elevated continental mass → suitable for mangroves
  6. Adequate precipitation - 100-200 mm across coast → promote mangrove growth
Diagram
- India map with markers (#) showing mangrove locations - Labels: - Sunderbans - Bhitarkanika - Coringa - Heading: Mangroves

Other factor

→ Local community (eg) - Kodawa Tribe - protect mangroves

→ Dedicated (eg) - MISHTI initiative

Role in coastal Ecology

  1. Source of food and fodder (eg) leaves of sundari tree
  2. Promote aquaculture and fisheries → easy to harvest around mangroves
  3. Natural Barriers against Disaster → Act as wind break for cyclone (4) Biodiversity → unique nature due to edge effect (eg) viviporous & salt tolerant trees (5) Presence of unique wildlife (eg) Bengal Tiger of Sundarbans (6) Key Role in coastal adaptation against climate change (eg) insurance against sea level rise (7) Ecological Heritage Sites → divine & unique ecology (eg) Bhitarkanika Mangrove

Way forward

(1) International collaboration (eg) Mangrove Alliance (2) Community based conservation (eg) MISHTI Initiative

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