Regeneration felling in a burnt, over-grazed sal coupe
Compartment 12 of a sal-dominated reserve forest in the Raipur–Dhamtari belt covers 250 ha. The sanctioned working plan prescribes selection-cum-improvement felling with an annual coupe of 25 ha. Your inspection shows: crop density 0.4 with poles and small sawlogs; vigorous coppice of 15–20 years origin over most of the compartment; bamboo understorey on 70 ha; 60 ha burnt in the last fire season with about 30 per cent cambium damage on the pole crop; roughly 3,000 cattle from four villages grazing inside; and 18 ha of old encroachment under kodo–kutki. The divisional nursery holds 40,000 sal stumps, 15,000 miscellaneous seedlings including aonla, harra and bamboo, and 2 kg of sal seed. The Van Suraksha Samiti has demanded 200 headloads of fuelwood and its bamboo rights this year, while the local MLA has written asking that no felling be done at all. The DFO wants the coupe completed before the financial year closes in March.
1. Which regeneration method would you adopt for this coupe, and what marking rules would you issue to the marking party? Justify each choice against the stocking, fire-damage and grazing data given.
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Diagnosis first. A density of 0.4 with a vigorous coppice crop means the site is under-stocked but not biologically poor; sal coppice is reliable, so the constraint is protection, not seed. The fire data change the marking logic: poles with more than about 30 per cent cambium damage will die back or become stag-headed, so they are a salvage liability, not a growing stock asset. Grazing at roughly 12 cattle per hectare means any new plantation will be browsed unless the coupe is closed.
Method. Prescribe improvement felling in the better-stocked patches and coppice-with-standards treatment in the under-stocked patches, not clear felling. Retain healthy, straight, fire-scar-free stems as standards, roughly 40–60 per hectare with 8–10 of them as mother trees, and keep all stems on slopes above 30 per cent and in a 15–30 m strip along nalas. Mark for removal only dead, diseased, deformed and fire-damaged poles, plus genuinely congested coppice stools; cut at 15–20 cm stump height with a slant facing away from the slope, and retain the two best coppice shoots per stool. No green sal poles below about 20 cm diameter should be marked, and no felling within 10 m of the encroachment boundary.
Caveat. The retention figures are silvicultural judgement and must be reconciled with the working plan prescription and local site quality before the marking is signed; record the rationale in the marking register so the coupe can be audited later.
2. Sequence the operations over the next three years given limited nursery stock, the burnt area and the encroachment, and state how you would deal with the MLA's letter and the Samiti's demand.
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Year 1 - protection and salvage, not planting. Complete enumeration and marking, extract only the fire-killed and damaged material, and dispose of it as departmental fuelwood and salvage timber rather than as commercial felling. Take up fire-line clearing and a 60 ha closure to grazing with the four villages, with a written grazing calendar for the remainder. The Samiti's 200 headloads can be met from dry and fallen wood and from the bamboo area under a recorded nistar permit, tied to written protection duties; bamboo working should be rotational, not whole-clump.
Year 2 - planting only in blanks. With coppice expected over most of the coupe, stumps are needed only where blank patches exceed about 20 per cent, which may be 3–5 ha of the 25 ha coupe, i.e. roughly 3,000–5,500 stumps at 1,100 per hectare. That conserves the nursery stock for the next coupe instead of planting over healthy coppice, and the miscellaneous seedlings go into the nala buffer and community land with the Samiti.
Year 3 - review and extend. Assess coppice survival per stool before expanding the coupe; continue soil-moisture works on the burnt slope.
On the pressures. Reply to the MLA in writing that no clear felling is proposed, only salvage and improvement marking inside an already sanctioned coupe; keep the letter on file, brief the Conservator, and invite a representative to witness marking. On the 18 ha encroachment, do not evict; route it through the gram sabha and the Forest Rights Act process with the district administration and record the reference.
3. What monitoring indicators would you record to judge whether the treatment worked, and what values would make you change course?
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Record a small set of indicators that can actually be measured by the beat staff every year, and fix the decision thresholds in advance so the assessment is not retrofitted.
- Stocking: per cent of quadrats with at least one established sal stem after treatment; a fall below about 0.4 after three years means the retention was too heavy or browsing is uncontrolled.
- Coppice success: surviving shoots per stool on cut stumps. If fewer than about 60 per cent of stools carry two healthy shoots at the end of the second growing season, shift the next coupe from coppice reliance to stump planting in larger patches.
- Fire: number and area of fire incidences. A repeat fire in the burnt 60 ha would force a fire-protection-first sequence and postpone all felling.
- Grazing pressure: dung-pellet counts on fixed transects plus cattle counts at entry points. Persisting high counts mean the closure failed and fencing or a paid watcher is justified before more money goes into planting.
- Weed and bamboo competition: weed cover in planted blanks; climber cutting needs.
- Growth: mean annual height increment of retained standards and of new regeneration.
Changing course is justified when the data contradict the assumption - here the central assumption is that coppice will do the regeneration job. If it does not, the intervention shifts to planting and protection, and the working plan prescription should be formally revised rather than the coupe being worked as scheduled.