Revision summary
Rainfall length, Himalayan height, soil, and relief create India’s vegetation mosaic. Human fire and farming further split climax types. Rainforest in the Ghats, north-east, and islands is the wet, endemic end of that mosaic. Sanctuaries under the Wildlife (Protection) Act, 1972, protect species, catchments, and carbon there. They fail if they stay as fragments without corridors and forest rights.
Model answer
Flow diagram
flowchart TD F[Monsoon altitude soil relief] --> V[Evergreen to thorn mosaic] V --> R[Western Ghats NE Andamans] R --> S[Rainforest sanctuaries] S --> E[Endemics water carbon] A[WPA 1972 FRA] --> S
Conclusion
- Notify corridors, fund anti-poaching and fire lines, and co-manage with gram sabhas in rainforest catchments.
- Keep Silent Valley-type lessons: some evergreen tracts should stay closed to dam and cash-crop conversion.
Monsoon, altitude, soil, and human use explain India’s vegetational diversity from evergreen to thorn. Sanctuaries in rainforest regions matter because they hold endemics, water, and carbon that cannot be stored in a dry teak belt, but they work only with corridors and local rights.
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Is a sanctuary the same as a national park?
Both are notified under the 1972 Act. A sanctuary often allows more regulated local use than a national park.
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Why single out rainforest sanctuaries?
Because evergreen endemics and monsoon catchments are not replaced by protecting only dry deciduous tiger blocks.
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