Forest Survey of India (FSI)
& India State of Forest Report 2023 🌳
FSI objectives · Key definitions · ISFR 2023 all findings · State rankings · Carbon stock · Mangroves · Forest fires · Bamboo · National Forest Policy · Bonn Challenge
Forest Survey of India (FSI) — Organisation & Activities
💡 Think of FSI as a Doctor Who Does a Full-Body Check-up of India’s Forests Every 2 Years
Just as a doctor checks your blood pressure, weight, and heart rate regularly — FSI checks India’s “forest vitals” every two years: total forest cover, canopy density, carbon stored, fires, bamboo, soil health, and mangroves. The result is the ISFR (India State of Forest Report) — like a comprehensive health report card for all of India’s 7.15 lakh sq km of forest. And just like a health report reveals both good news (some forests growing) and bad news (dense forests declining) — ISFR 2023 tells the same story: India’s green cover is growing in total, but dense forests are being degraded into open forests.
- Established: 1 June 1981 (restructured from the Pre-Investment Survey of Forest Resources / PISFR — a project started in 1965 with FAO + UNDP assistance)
- HQ: Dehradun, Uttarakhand (at Forest Research Institute campus)
- Under: Ministry of Environment, Forest and Climate Change (MoEFCC)
- Publication: India State of Forest Report (ISFR) — published biennially (every 2 years) since 1987. ISFR 2023 is the 18th edition.
- Satellite used: ISRO’s LISS-III sensor on IRS Resourcesat satellites (spatial resolution: 23.5 metres). Data acquired during October–December for cloud-free images with full foliage.
- Mapping scale: 1:50,000 | Minimum Mapping Unit (MMU): 1 hectare
- Biennial assessment of India’s forest cover and tree cover using satellite imagery
- Conduct National Forest Inventory (NFI) — field-based assessment of growing stock (timber volumes), bamboo, and other forest resources
- Monitor forest fires in real time using MODIS/VIIRS satellite sensors and GIS technology (since 2004)
- Estimate carbon stock in India’s forests for UNFCCC/Paris Agreement reporting
- Assess mangrove cover, bamboo resources, Trees Outside Forests (TOF), and agroforestry
- Develop India’s Forest Reference Emission Levels (FREL) for REDD+ mechanisms
- Provide data for FAO’s Global Forest Resources Assessment and international reporting
- Train forest department personnel across states
- Publish state/UT-wise and district-level forest data for policy planning
Key Definitions — The UPSC Trap Zone
Four terms look similar but are different: Forest Cover ≠ Forest Area ≠ Recorded Forest Area ≠ Tree Cover. The trick: “Forest Cover” is about CANOPY DENSITY — not legal status. “Recorded Forest Area” is about LEGAL RECORDS — not what’s on the ground. A private mango orchard with 10%+ canopy counts as Forest Cover but is NOT Recorded Forest Area.
Forest Cover = all land ≥1 hectare in area, with a tree canopy density of ≥10%, irrespective of ownership and legal status
- Includes: orchards, bamboo, palms — if they meet the 1 hectare + 10% canopy density criteria
- Includes: private land, community land, government land — regardless of who owns it
- Excludes: land with tree canopy below 10% (classified as scrub) even if it is “legally a forest”
- Key: FSI forest cover ≠ legal forest. A legally-declared forest that has been degraded below 10% canopy is NOT counted as forest cover. A private plantation with 10%+ canopy IS counted.
- FSI uses this definition for mapping — it captures the actual green cover on the ground, not what the law says
Very Dense Forest
Canopy density 70% or more. Richest, most ecologically valuable. Evergreen & dense tropical forests.
Moderately Dense Forest
Canopy density 40–70%. Mixed tropical forests, sal/teak forests. Significant wildlife habitat.
Open Forest
Canopy density 10–40%. Often degraded or dry forests. Most common category in India. Many show agroforestry increase.
Scrub
Canopy density below 10%. NOT counted in forest cover. Shrubs interspersed with scattered trees.
| Term | Definition | UPSC Trap |
|---|---|---|
| Tree Cover | Trees outside Recorded Forest Areas — from single trees to patches <1 ha. Includes trees in fields, roadsides, homesteads. | Tree Cover + Forest Cover = Total Green Cover. Tree cover is NOT forest cover. |
| Recorded Forest Area (RFA) | Areas officially notified as forest under law (Indian Forest Act 1927 etc.). Includes Reserved Forests (RF), Protected Forests (PF), and Unclassed Forests. | RFA = Legal status. Forest Cover = Ground reality. They overlap but are NOT the same. |
| Reserved Forest (RF) | Most strictly protected under Indian Forest Act 1927. No rights of user (except by Govt). Grazing, felling, encroachment all prohibited. | RF is the MOST protected category of Recorded Forest Area. |
| Protected Forest (PF) | Some rights of user allowed (limited). Less strict than RF. State government can permit some activities. | PF ≠ Protected Area (PA). PF is a forest classification; PA is under WPA 1972. |
| Trees Outside Forests (TOF) | All trees growing outside forest areas — agroforestry, home gardens, urban trees, road-side trees, etc. Major source of timber. | TOF provides 91.51 million cubic metres of annual potential timber — MORE than plantation forests. |
| Forest and Tree Cover | Forest Cover + Tree Cover combined = 8,27,357 sq km (25.17%) as per ISFR 2023 | National Forest Policy 1988 target = 33%. India is at 25.17% — short of the 33% target. |
⭐ Memory Trick — Definitions in One Line Each
- Forest Cover = Canopy ≥10%, Area ≥1 ha, Any land → “1-10 rule on any land”
- Tree Cover = Trees on ANY land, patch <1 ha → “Small patches outside forests”
- RFA = Legally declared forest in records (RF + PF) → “What the government SAYS is forest”
- Forest Cover = What is ACTUALLY green (≥10% canopy) → “What satellite SEES as forest”
- VDF ≥70% · MDF 40–70% · OF 10–40% · Scrub <10%
- Target: 33% (National Forest Policy 1988) | Current: 25.17% — shortfall of ~7.8%
ISFR 2023 — Key Forest and Tree Cover Findings 2023 Data
Total Forest & Tree Cover (sq km)
Forest Cover only (sq km)
Tree Cover only (sq km)
Increase since ISFR 2021 (Forest: +156 | Tree: +1,289)
Total carbon stock (million tonnes) — up 81.5 MT
Mangrove cover (sq km) — decreased from 2021
ISFR 2023 shows an overall increase of +1,445 sq km in forest and tree cover — positive headline. But the detailed picture is more complex:
- Good news: Total forest + tree cover grew by +1,445 sq km vs 2021
- Concern 1 — Dense forest loss: A total of 3,656 sq km of dense forests (VDF + MDF) degraded — 294.75 sq km of VDF and 3,361.5 sq km of MDF were converted to lower-density or non-forest categories
- Concern 2 — Northeast decline: Northeast region saw a 327.30 sq km decrease in forest cover — despite being India’s richest forest zone (67% cover)
- The increase is mainly in Open Forest — driven by agroforestry and tree planting programmes, not natural dense forest growth
- This pattern — total cover growing, dense forests shrinking — is a concerning long-term trend for biodiversity and ecosystem services
State Rankings — ISFR 2023
| Ranking Category | Rank 1 | Rank 2 | Rank 3 | Note |
|---|---|---|---|---|
| Largest Forest Cover (Area) | MP (77,073 sq km) | Arunachal Pradesh (65,882) | Chhattisgarh (55,812) | Area-wise giants — large states with vast forests |
| Largest Forest + Tree Cover (Area) | MP (85,724 sq km) | Arunachal Pradesh (67,083) | Maharashtra (65,383) | Including tree cover outside forests |
| Highest % Forest Cover | Lakshadweep (91.33%) | Mizoram (85.34%) | A&N Islands (81.62%) | Island territories + NE states dominate percentage rankings |
| Max Increase (Forest + Tree Cover) | Chhattisgarh (+684 sq km) | UP (+559) | Odisha (+559) | Rajasthan (+394) also notable |
| Max Increase (Forest Cover only) | Mizoram (+242 sq km) | Gujarat (+180) | Odisha (+152) | — |
| Max Decrease (Forest Cover) | Madhya Pradesh | Nagaland | Ladakh | Karnataka also notable decrease |
| States with >75% Forest Cover | Mizoram, Lakshadweep, A&N Islands, Arunachal Pradesh, Nagaland, Meghalaya, Tripura, Manipur — 8 states/UTs | All 8 are NE states or islands | ||
| States with >33% Forest Cover | 19 states/UTs above the national 33% target | NFP 1988 target = 33% | ||
| Max Bamboo Bearing Area | MP | Arunachal Pradesh | Maharashtra | Odisha also significant; total: 1,54,670 sq km (up 5,227 sq km) |
| Mangrove — Max Decrease | Gujarat (–36.39 sq km) | A&N Islands (–4.65) | — | National decrease: –7.43 sq km overall |
| Mangrove — Max Increase | Andhra Pradesh (+13.01) | Maharashtra (+12.39) | — | Natural regeneration + state planting |
| Forest Fire — Most Incidents (2023-24) | Uttarakhand | Odisha | Chhattisgarh | 32.06% of Indian forests are “highly fire-prone” |
⭐ State Rankings Memory — ISFR 2023
- Largest forest area (3): MP → Arunachal → Chhattisgarh (MAC)
- Highest % forest cover (3): Lakshadweep → Mizoram → A&N Islands (LMA)
- Max increase forest+tree (3): Chhattisgarh → UP → Odisha (CUO)
- Max increase forest only (3): Mizoram → Gujarat → Odisha (MGO)
- 8 states above 75% forest: All NE states + Lakshadweep + A&N Islands
- 19 states above 33% forest cover
- Mangrove decrease: Gujarat (worst) | Mangrove increase: Andhra Pradesh (best)
- Fire top 3: Uttarakhand → Odisha → Chhattisgarh
Special Regions — Northeast India & Western Ghats
Northeast India — India’s Forest Powerhouse
- Total forest and tree cover in Northeast: 1,74,394.70 sq km = 67% of geographical area — India’s most densely forested region
- Alarming trend: Forest cover DECREASED by 327.30 sq km in the current assessment — the region is losing forests despite its high coverage
- Causes: Shifting cultivation (jhum), infrastructure development, urbanisation, settlement expansion
- 8 states with >75% forest cover are all from NE or island regions
- Exception: Mizoram shows an increase of 242 sq km in forest cover — bucking the regional declining trend
- North Eastern states also showed decline in ISFR 2021 — this is a persistent long-term concern
- NE region is part of the Indo-Burma Biodiversity Hotspot — forest loss here has disproportionate biodiversity consequences
Western Ghats — UNESCO WHS + Biodiversity Hotspot
- Forest cover in Western Ghats Eco-Sensitive Areas (WGESA): 44,043.99 sq km = 73% of WGESA
- Loss over 10 years: –58.22 sq km of forest cover lost in eco-sensitive zones over a decade
- The Western Ghats is both a UNESCO World Heritage Site (2012) and one of the world’s 8 biodiversity hotspots
- Major states: Kerala (highest % WG forest), Karnataka, Tamil Nadu, Maharashtra, Goa
- Threats: Plantation agriculture (tea, coffee, eucalyptus), road construction, quarrying, tourism pressure
- The Gadgil Committee report (2011) had recommended strong protections — still a contested policy area
Hill Districts — India’s Highlands
- Total forest cover in hill districts: 2,83,713.20 sq km = 40% of geographical area of hill districts
- India’s hill districts are ecologically critical: watershed protection, landslide prevention, river sources
- National Forest Policy 1988 target for hills/mountains: maintain 2/3rd (67%) under forest cover to prevent erosion — current 40% is well short
- Infrastructure development (roads, tunnels, hydro projects) in hill districts is a major pressure point
Mangrove Cover — ISFR 2023
- Total mangrove cover: 4,991.68 sq km = 0.15% of India’s geographical area
- Change vs ISFR 2021: Net decrease of 7.43 sq km — mangrove cover declined
- Present in: 12 States/UTs (9 States + 3 UTs)
- States with significant decrease:
- Gujarat: –36.39 sq km (largest decrease)
- Andaman & Nicobar Islands: –4.65 sq km
- States with increase:
- Andhra Pradesh: +13.01 sq km (largest increase — natural regeneration and plantation)
- Maharashtra: +12.39 sq km
- Exception to Gujarat rule: All other states/UTs showed mangrove increase — the problem is concentrated in Gujarat and Andamans
- India has the world’s largest mangrove forest in the Sundarbans (West Bengal)
- Global: India ranks 3rd in the world in mangrove cover — after Indonesia and Brazil
ISFR uses a separate, more detailed methodology for mangrove mapping (scale: 1:12,500) — higher resolution than general forest mapping. Mangroves are critical for: coastal protection, carbon storage (“blue carbon”), fishery nurseries, cyclone buffers. India’s mangrove initiative: MISHTI (Mangrove Initiative for Shoreline Habitats and Tangible Incomes) — launched in Union Budget 2023-24 to protect and restore mangroves along India’s coastline. World Mangrove Day: 26 July.
Carbon Stock & NDC Target — Climate Connection
Carbon Stock in India’s Forests — ISFR 2023
- Total carbon stock in India’s forests: 7,285.5 million tonnes (MT)
- Increase since ISFR 2021: +81.5 million tonnes
- Breakdown: Soil organic carbon accounts for 55.06% of total stock (largest component)
- India’s carbon stock = 30.43 billion tonnes of CO₂ equivalent
- NDC Progress: India committed under the Paris Agreement to create an additional carbon sink of 2.5–3.0 billion tonnes of CO₂ equivalent by 2030 through forest and tree cover expansion
- Status: India has already achieved 2.29 billion tonnes of additional carbon sink compared to 2005 baseline — well on track towards the 2030 target
- Annual carbon sequestration rate equivalent to reducing CO₂ emissions by 149 million tonnes annually
- Growing stock (total timber volume in forests + TOF): 6,430 million cubic metres — increase of 262 million cubic metres vs 2021
Forest Fire — Threat and Monitoring
Forest Fire in India — ISFR 2023 Data
- Top 3 states with most fire incidents (2023-24 season): Uttarakhand → Odisha → Chhattisgarh
- Fire prone category: 32.06% of India’s forests are classified as “Highly Fire Prone”
- FSI monitors fires using MODIS and VIIRS satellite sensors + GIS technology in near real-time (since 2004)
- FSI’s Forest Fire Alerts System provides real-time fire alerts to forest departments
- Fire Proneness Categories: Highly Fire Prone · Moderately Fire Prone · Less Fire Prone · Not Fire Prone
- Causes: Dry leaf litter in deciduous forests, human-caused fires (agricultural burning spreading), climate change extending dry seasons
- Impact: Forest fires degrade forest quality, kill wildlife, release stored carbon, reduce regeneration capacity — reversing conservation gains
Bamboo, Trees Outside Forests (TOF) & Agroforestry
- Total bamboo bearing area: 1,54,670 sq km
- Increase since ISFR 2021: +5,227 sq km — significant growth
- Maximum bamboo area: Madhya Pradesh → Arunachal Pradesh → Maharashtra → Odisha
- India is the world’s 2nd largest bamboo producer after China
- Bamboo importance: Construction, handicrafts, paper, food (bamboo shoots), bioenergy. India amended the Indian Forest Act 1927 in 2017 — bamboo grown outside forests is now NOT classified as “tree” (removed from Indian Forest Act purview) — making it easier for farmers to harvest bamboo on their land
- TOF = all trees growing outside forest areas (fields, roadsides, homesteads, urban areas)
- Potential annual timber production from TOF: 91.51 million cubic metres
- Growing stock in TOF: 1,950.75 million cubic metres (30% of total growing stock)
- TOF increased by 171.40 million cubic metres (9.63%) since 2021 — faster growth than forests
- TOF is a critical source of rural livelihoods and a major contributor to carbon sequestration
- Agroforestry green cover: 1,27,590 sq km — a 21% increase since 2013
- Increase since 2013: +21,286.57 sq km
- Growing stock under agroforestry: 1,291.68 million cubic metres — 28.56% increase vs 2013
- Key states with agroforestry-driven tree cover increase: Chhattisgarh, Rajasthan, Uttar Pradesh
- Government scheme: Sub-Mission on Agroforestry (SMAF) — promotes integration of trees on agricultural land
- Much of the increase in “Open Forest” and “Tree Cover” in ISFR 2023 is attributed to agroforestry expansion — not natural forest regeneration
Policy Context — National Forest Policy & International Commitments
National Forest Policy 1988
- Primary objective: Maintain environmental stability and ecological balance — not timber production (unlike earlier policies)
- Forest cover target: 33% of India’s total land area under forest and tree cover (current: 25.17% — shortfall of ~7.83%)
- Hills and mountains: 2/3rd (67%) of hill areas should remain under forest cover — to prevent erosion and landslides
- Priority order: Environmental protection > Community rights > Tribal rights > Industrial timber (reversed from earlier policy)
- Promotes Joint Forest Management (JFM) — community participation in forest protection
- India is working on a New National Forest Policy to replace the 1988 policy — draft has been under discussion
Bonn Challenge — India’s Restoration Commitment
- The Bonn Challenge is a global effort to bring 350 million hectares of degraded land under restoration by 2030
- India’s commitment: 26 million hectares of degraded land restoration by 2030
- Part of India’s INDC/NDC under the Paris Agreement
- India also committed to creating 2.5–3.0 billion tonnes of CO₂ equivalent additional carbon sink through forest/tree cover — already achieved 2.29 billion tonnes
- ISFR 2023 data is used to track progress on Bonn Challenge commitments
National Forest Inventory (NFI) & REDD+
- National Forest Inventory (NFI): Field-based assessment where FSI teams visit thousands of sample plots across India to physically measure tree height, diameter, species composition, and health — combined with satellite data for comprehensive estimates
- REDD+ (Reducing Emissions from Deforestation and Forest Degradation) — international mechanism under UNFCCC that pays developing countries for reducing forest-based emissions and maintaining carbon stocks
- FSI develops India’s Forest Reference Emission Levels (FREL) for REDD+ reporting
- ISFR data feeds directly into India’s reporting under UNFCCC, Paris Agreement, CBD, and FAO’s Global Forest Resources Assessment
⭐ ISFR 2023 — Complete UPSC Master Cheat Sheet
- FSI: Est. 1 June 1981 | HQ: Dehradun, Uttarakhand | Under: MoEFCC
- ISFR: Published biennially since 1987 | ISFR 2023 = 18th edition | Satellite: ISRO LISS-III
- Total Forest + Tree Cover: 8,27,357 sq km (25.17%) of India’s land area
- Forest Cover: 7,15,343 sq km (21.76%) | Tree Cover: 1,12,014 sq km (3.41%)
- Increase vs 2021: +1,445 sq km (forest +156; tree +1,289)
- Target (National Forest Policy 1988): 33% — India is at 25.17% (shortfall of ~8%)
- Canopy density: VDF ≥70% · MDF 40–70% · OF 10–40% · Scrub <10%
- Largest forest area: MP → Arunachal → Chhattisgarh
- Highest % forest cover: Lakshadweep (91.33%) → Mizoram (85.34%) → A&N Islands (81.62%)
- Max forest increase: Mizoram (242) → Gujarat (180) → Odisha (152) (forest only)
- NE Region: 67% forest cover but –327.30 sq km decrease
- Carbon stock: 7,285.5 million tonnes (+81.5 MT) | NDC progress: 2.29 billion tonnes additional CO₂ sink achieved
- Mangrove: 4,992 sq km (–7.43 sq km) | Gujarat worst (–36.39) | AP best (+13.01)
- Bamboo: 1,54,670 sq km (+5,227) | Max: MP → AP → Maharashtra
- TOF timber potential: 91.51 million cubic metres/year
- Forest Fire top 3: Uttarakhand → Odisha → Chhattisgarh | 32.06% forests highly fire-prone
- Bonn Challenge: India commits to 26 million hectares restoration by 2030
- Dense forest loss: 3,656 sq km of VDF+MDF degraded — the hidden bad news in ISFR 2023
- 19 states above 33% | 8 states above 75% forest cover


