The research, conducted by Abhishek Maitry and Gunjan Patil of Guru Ghasidas Vishwavidyalaya in Bilaspur, India, together with Manoj Kumar Jhariya of Sant Gahira Guru Vishwavidyalaya in Ambikapur, focused on limestone mine spoils reclaimed with four dominant tree species: Dalbergia sissoo, Azadirachta indica, Tectona grandis and Albizia procera. Rather than treating reclamation as a binary success or failure, the team sampled plantations at three distinct ages — 5, 15 and 25 years after reclamation — alongside unplanted degraded soil and nearby reference normal soil. This chronosequence design allowed them to trace the trajectory of soil development through time and, crucially, to fit mathematical models that project that trajectory into the future.

The technical heart of the study is the Reclaimed Mine Soil Quality Index, or RMSQI, a composite metric built from measurements spanning the physical, chemical, biological and enzymatic dimensions of the soil. Physical and chemical parameters included the standard suite of indicators that soil scientists rely upon to characterize fertility and structure, while the biological component captured microbial activity and the enzymatic machinery that drives nutrient cycling. Soil enzymes such as those involved in phosphorus and nitrogen transformations are particularly sensitive early-warning signals, responding to changes in organic matter and microbial communities long before bulk properties like texture or pH show measurable shifts. By integrating these indicators into a single normalized score, the index condenses a bewildering array of measurements into one number that can be tracked across sites and years.

The results reveal a clear and encouraging pattern. At 5 years after reclamation, RMSQI values across the four species ranged from just 0.230 to 0.249 — a fraction of the reference soil benchmark of 0.656. By 15 years the index had climbed substantially, and at 25 years the plantations reached values between 0.607 and 0.627, closing most of the gap to the reference condition. In other words, a quarter century of tree growth on mine spoil had restored roughly ninety percent of the soil quality measured in nearby undisturbed land. That trajectory, rising steeply in early years and then flattening as it approaches the reference ceiling, is precisely the shape that an asymptotic growth model is designed to capture.

When the researchers compared candidate models for describing this recovery curve, the asymptotic growth model proved the most accurate, achieving R-squared values above 0.99. That near-perfect fit matters because it transforms scattered field measurements into a predictive tool. Instead of waiting another decade to see whether a young plantation is on track, managers can fit the model to early data and estimate when the soil will reach the reference threshold. The approach echoes a broader shift in restoration ecology, where the field is moving away from static snapshots of vegetation cover and toward trajectory-based assessments that acknowledge ecosystems recover along predictable but slow pathways.

To translate the fitted curves into calendar years, the team turned to Monte Carlo simulation, a computational technique that runs thousands of randomized trials to propagate uncertainty through the model. The simulations indicated a median recovery period of roughly 29 to 34 years for the reclaimed soils to reach the reference soil condition. That figure carries real weight for policy: mine closure plans, financial assurance bonds and post-mining land-use commitments are often built on assumptions about recovery timescales, and this study suggests those timescales are on the order of three decades rather than the five to ten years sometimes implied by successful early revegetation.

Perhaps the most practically useful finding concerns species choice. Dalbergia sissoo, a nitrogen-fixing legume, showed the quickest recovery time of the four species tested, a result consistent with the well-documented capacity of leguminous trees to accelerate soil development by enriching it with organic matter and biologically available nitrogen through their symbiotic root bacteria. Tectona grandis, the teak widely planted across tropical reclamation programs, demonstrated high variability in recovery duration, suggesting that its performance as a soil-restoration agent is less reliable and may depend heavily on site conditions. Azadirachta indica and Albizia procera, the latter another nitrogen fixer, fell between these extremes. For restoration planners, the message is that the tree species selected at the start of a project can meaningfully compress or stretch the timeline to functional soil recovery.

The study’s setting adds ecological context. Limestone mining leaves behind spoils that are often coarse, nutrient-poor and biologically depauperate, lacking the aggregated structure, organic carbon and microbial communities that make healthy soil function. Recovery in such substrates depends on a slow feedback loop: pioneer trees add litter and root exudates, which feed microbes and soil fauna, which in turn build aggregates and release nutrients, enabling more vigorous plant growth. The enzymatic and microbial indicators in the RMSQI capture the early stages of this loop, which is why the index rises measurably even in the first five years even though visible soil profile development takes far longer.

What distinguishes this work from earlier soil quality indexing efforts is the explicit marriage of the index with predictive modeling and uncertainty analysis. Previous chronosequence studies of reclaimed coal and limestone mines had established that soil quality indices climb with plantation age, and machine-learning approaches have been applied to index formulation. But few studies have pushed through to a probabilistic estimate of recovery time validated against a reference benchmark. By anchoring the endpoint to measured reference normal soil rather than an arbitrary target, the researchers gave the predicted timelines a concrete ecological meaning: the point at which reclaimed spoil functions like the soil it replaced.

The implications ripple outward well beyond a single limestone mining district in Chhattisgarh. Global restoration commitments, including large-scale pledges to rehabilitate degraded land, increasingly demand accountability metrics that can be audited decades after planting. A tool that converts a modest soil-sampling program into a defensible recovery forecast could help regulators verify that reclamation obligations are being met, help mining companies prioritize which sites need intervention, and help ecologists compare the effectiveness of different restoration strategies across landscapes. The authors suggest their framework provides a solid foundation for predicting reclamation timeframes and selecting suitable species for mine rehabilitation projects. If the approach proves transferable to other mine types and climates, the humble soil quality index may become one of restoration ecology’s most consequential forecasting instruments — turning the long, opaque wait for healed landscapes into a measurable, modelable and manageable process.

Subject of Research: Predicting soil recovery timelines in degraded mine lands using soil quality indices and growth modeling

Article Title: Predicting soil recovery timelines in degraded mine lands using tree-based soil quality indices and asymptotic growth model

Article References: Maitry, A., Patil, G., & Jhariya, M. K. (2026). Predicting soil recovery timelines in degraded mine lands using tree-based soil quality indices and asymptotic growth model. Environmental Monitoring and Assessment, 198(11), Article 1164. https://doi.org/10.1007/s10661-026-15972-0

Image Credits: AI Generated

DOI: 10.1007/s10661-026-15972-0

Keywords: soil reclamation, ecorestoration, soil quality index, mine spoil, asymptotic growth model, Monte Carlo simulation, Dalbergia sissoo, Tectona grandis, limestone mining, soil enzymes, restoration ecology, chronosequence

The team’s starting point was a simple horticultural trick that foresters have long appreciated. Instead of coaxing seeds through their slow and unreliable germination, one-year-old teak seedlings can be harvested and cut into stumps: a seven-centimetre segment of root joined to a short shoot portion of about 2.5 centimetres, each trimmed to a girth of roughly one centimetre. These stumps are then planted directly into polythene bags filled with red soil, where they resprout into complete young trees. Because every stump is cut from a seedling that has already proven itself vigorous, the method sidesteps the germination problem entirely and produces uniform planting material at a fraction of the cost of tissue culture. What the stumps still lacked, however, was a fast, reliable way to establish themselves in nutrient-poor nursery soil, and that is where the microbes came in.

The researchers assembled a cast of four bacterial strains and two fungal species, all well-known players in the world of plant growth-promoting rhizobacteria, or PGPR, and arbuscular mycorrhizal fungi, or AM fungi. The bacterial lineup included Azospirillum melinis and Azotobacter chroococcum, two free-living nitrogen fixers that can pull atmospheric nitrogen into forms plants can absorb, and Bacillus licheniformis, a phosphate solubiliser that unlocks insoluble phosphorus locked away in soil minerals. On the fungal side, the team worked with Funneliformis mosseae and Glomus sinuosum, two AM fungi that colonise plant roots and build extensive networks of hyphae that extend far beyond the root’s own reach, effectively enlarging the volume of soil the tree can mine for water and nutrients. One month after the stumps had been transplanted into their poly bags, the researchers inoculated them with each microorganism individually and in various combinations, then irrigated and maintained them for three months.

After the three-month nursery phase, the team measured growth, biomass and the concentrations of nitrogen, phosphorus and potassium in the plant tissues. The results were unambiguous. Stumps that had received microbial inoculation grew better and accumulated more biomass than uninoculated control stumps across the board. The effect was strongest when multiple organisms were applied together, a pattern consistent with the idea that the different microbes perform complementary functions: the nitrogen fixers supply one limiting nutrient, the phosphate solubiliser another, and the mycorrhizal fungi knit the whole system together by improving uptake of phosphorus and water through their hyphal networks. Notably, the dual inoculation of the two nitrogen fixers, Azospirillum melinis and Azotobacter chroococcum, performed on par with the full multi-species cocktail, suggesting that a carefully chosen pair of bacteria may deliver most of the benefit without the complexity of managing four or five organisms at once.

Tissue nutrient analysis reinforced the growth story. Levels of nitrogen, phosphorus and potassium were all higher in plants that had received the multiple PGPR inoculations, confirming that the microbes were not merely stimulating growth through hormones or other indirect signals but were genuinely improving the nutritional status of the young trees. This matters for reforestation in a practical sense. Clear-felled forest sites are often depleted in organic matter and available nutrients, and planting stock that arrives with a well-developed internal nutrient reserve and an active microbial partnership is far more likely to survive the shock of transplanting. The mycorrhizal component is particularly significant here, because AM fungi form structures called arbuscules inside root cells, where the plant trades photosynthetic sugars for minerals gathered by the fungus, an ancient symbiosis that underpins nutrient cycling in most terrestrial ecosystems.

The study did not stop at the nursery gate. The improved teak stumps were transplanted into forest lands at Konni in the state of Keralam, India, a region where teak plantations have historically been established on clear-felled forest. Under real field conditions, the inoculated stumps showed good growth and survival, providing the crucial proof of concept that nursery-stage microbial treatment translates into field performance. This last step is where many biofertiliser trials falter, since greenhouse gains often evaporate when plants face drought, competition, herbivory and the heterogeneous soils of an actual plantation. The Konni outplanting, conducted in collaboration with the state forest department, indicates that stump inoculation is not just a laboratory curiosity but a workable component of operational reforestation.

The findings fit into a broader and rapidly growing body of research on microbial symbioses in tropical forestry. Previous work by the same group has shown that AM fungi can improve the establishment of eucalyptus on bauxite mine spoils, that the actinorhizal symbiont Frankia boosts growth in casuarina plantations, and that PGPR inoculation can help trees colonise barren laterite rocks. Studies from other groups have documented similar benefits in acacias in the Sahel, in oil palm under greenhouse conditions, and in sandalwood grown alongside casuarina host plants. Together, these results point toward a paradigm in which the health of a plantation is understood as a property of its soil microbiome as much as of its genetics or its silviculture. The ecological literature has long recognised that above-ground and below-ground biota are tightly linked, and foresters are now learning to exploit those linkages deliberately.

For teak specifically, the implications are considerable. The species commands some of the highest timber prices in the world, and demand from both domestic Indian markets and international buyers has driven extensive plantation programs. India’s timber trade reviews have highlighted the scale of the industry, and teak remains the flagship species for many state forest departments and private growers alike. If stump propagation combined with microbial inoculation can reliably produce vigorous planting stock at low cost, it could reduce dependence on seed orchards and tissue culture labs while shortening the nursery cycle. The economics are attractive: stumps require no specialised equipment, the microbial inoculants can be mass-produced from locally maintained cultures, and the technique is accessible to small-scale nurseries that supply village-level planting programs.

There are also ecological dividends. Reforestation of clear-felled land is one of the most widely deployed strategies for climate mitigation and biodiversity recovery, and its success hinges on early seedling survival. Young trees that establish a mycorrhizal network quickly can access water and nutrients that uncolonised neighbours cannot, giving them a competitive edge during the vulnerable establishment phase. Faster early growth also shortens the period during which plantations are exposed to weed competition and fire risk. By demonstrating that a simple inoculation at the nursery stage can carry through to improved field performance, the Coimbatore team has added a practical tool to the restoration toolkit, one that works with the tree’s own evolutionary history rather than against it.

The study, published in Plant Biosystems as volume 160, article 235, is careful to frame its contributions within the constraints of a single species and a single field site, and the authors declare no competing interests. Further work will be needed to test how the inoculant combinations perform across different soil types, climates and provenances of teak, and to determine whether the dual bacterial treatment identified in the nursery trials remains the optimal choice under field conditions. But the core message is already clear and likely to resonate far beyond Indian forestry: sometimes the cheapest way to grow a better tree is to hand it, at the very start of its life, the microbial partners it would eventually find in a healthy forest soil anyway. In an era when restoration targets are measured in millions of hectares, such elegantly simple interventions may prove to be among the most valuable.

Subject of Research: Use of arbuscular mycorrhizal fungi and plant growth-promoting rhizobacteria to improve growth of Tectona grandis stump cuttings for reforestation in India

Article Title: Arbuscular mycorrhizal fungi and plant growth promoting rhizobacteria promote Tectona grandis root shoot cuttings used in reforestation of clear-felled forest in India

Article References: Arumugam, K., Chacko, J. V. P., Lingam, M., & Nair, S. P. (2026). Arbuscular mycorrhizal fungi and plant growth promoting rhizobacteria promote Tectona grandis root shoot cuttings used in reforestation of clear-felled forest in India. Plant Biosystems, 160(4), Article 235. https://doi.org/10.1007/s44473-026-00243-0

Image Credits: AI Generated

DOI: 10.1007/s44473-026-00243-0

Keywords: teak, Tectona grandis, arbuscular mycorrhizal fungi, PGPR, reforestation, stump cuttings, nitrogen fixation, phosphate solubilisation, biofertilisers, forest restoration, India, plant nutrition

Teak is not an ordinary tree. Often called the king of timbers, it commands some of the highest prices in the global wood market thanks to its durability, water resistance, and dimensional stability. India hosts a large share of the world’s natural teak forests, and the species underpins enormous plantation economies across South and Southeast Asia. Because teak is so valuable, foresters have long sought to improve it through selective breeding, and clonal seed orchards, plantations established from grafted or rooted copies of elite trees, are the workhorse of that effort. The logic is simple: if you plant copies of the best trees together, they will cross-pollinate and produce seed that carries superior genes into the next generation of plantations. But the logic only works if the clones in the orchard really are the best, and that is precisely what the Jabalpur team set out to verify.

The trial they examined is remarkable for its age and provenance diversity. It contains ramets, the individual vegetative copies of each clone, sourced from different teak-growing regions of India, and the trees have now passed the thirty-year mark. That maturity matters enormously. Early evaluations of clonal trials, conducted when trees are five or ten years old, can be misleading because growth trajectories diverge over time, competition reshapes stands, and traits like bole straightness or forking only express their full economic significance in mature stems. A thirty-year-old trial captures the traits that actually determine timber value at harvest, making it a far more reliable guide to which clones should father the next generation of commercial plantations.

The researchers evaluated both quantitative growth traits and qualitative characteristics. The growth traits included clear bole height, the length of trunk free of branches and therefore the most valuable sawn timber; girth at breast height, a standard forestry measurement taken at 1.37 meters; total tree height; and computed wood volume. The qualitative traits covered straightness of the bole, compactness of the crown, the presence or absence of forking, overall tree health, and flowering intensity. Each of these matters in its own way: forked stems reduce usable timber, sprawling crowns signal poor growing-space efficiency, and flowering behavior in a seed orchard directly influences how much genetic contribution each clone makes to the seed crop.

What sets this study apart methodologically is its use of a linear mixed model, or LMM, a statistical framework that has become the gold standard in genetics and plant breeding but is still underused in some forestry contexts. In an LMM, some effects are treated as fixed, meaning the researcher wants to estimate and compare them directly, while others are treated as random, meaning they represent a sample from a larger population and account for background variability. Here, the clones were modeled as fixed effects, since the team wanted to rank and compare each one, while replication within the trial was modeled as a random effect, absorbing the environmental noise of position in the field. Variance components were estimated using restricted maximum likelihood, or REML, a technique that produces unbiased estimates even in unbalanced designs where some trees have died or grown unevenly over three decades, an almost inevitable feature of any long-term field trial.

From the fitted model, the researchers calculated estimated marginal means, or EMMs, for each clone, which are model-adjusted averages that level the playing field across the trial’s spatial variability. Pairwise comparisons between clones were then carried out with Sidak’s post hoc test, a correction that controls the risk of false positives when many comparisons are made simultaneously. The analysis revealed statistically significant variation among clones in every growth trait measured: clear bole height, girth at breast height, total height, and wood volume all differed meaningfully from clone to clone. Just as importantly, all the growth traits were significantly correlated with one another, meaning that clones that grew tall also tended to be thick and voluminous. That correlation is good news for breeders, because it suggests that selecting for one growth trait will tend to pull the others along with it, simplifying the selection process.

To visualize the overall genetic landscape, the team applied hierarchical clustering, a technique that groups clones based on the similarity of their measured traits. The clustering sorted the collection into five distinct clusters, and the pattern that emerged was striking. Cluster V contained the stars of the trial: clones APNPL-4, KLK-1, ST-16, and MHALP-1, which posted the strongest values across the growth traits. At the other end of the spectrum, cluster IV contained clones ORPDP-29 and MYSA-2, which showed low values not only for growth but also for one or more of the qualitative traits. The practical recommendation that follows is one of the most actionable findings in the study: the underperforming clones in cluster IV should be rogued out of the orchard, meaning physically removed, so that their inferior genes no longer contaminate the orchard’s seed crop. Roguing is a standard but powerful tool in seed orchard management, and every inferior clone removed translates directly into increased genetic gain in the progeny raised from the remaining trees.

Among the top performers, one clone stood out as nearly ideal. KLK-1 recorded high estimated marginal means for all the growth traits and showed desirable values for every qualitative trait except flowering. That single caveat is worth pausing on, because in a seed orchard, flowering is not a cosmetic trait; it is the mechanism by which a clone transmits its genes to the next generation. A clone that grows superbly but flowers sparsely will contribute less pollen or fewer flowers to the seed crop than its genetic merit would justify, diluting its impact on the progeny. The finding illustrates a recurring tension in seed orchard genetics: growth performance and reproductive output must both be considered when deciding which clones to retain, and a clone that excels in one dimension may need supplemental management, such as crown exposure or flowering stimulation, to pull its full weight in the orchard.

Perhaps the most conceptually interesting result concerns geography. A long-standing assumption in provenance research is that material collected from sites environmentally similar to the planting site should perform better, an idea rooted in the logic of local adaptation. Yet in this trial, the nearness of the test site in Jabalpur to the place of origin of each clone turned out to be inconsequential for growth traits. Clones from distant regions performed just as well, or as poorly, as clones from nearby ones, once the statistical model accounted for the trial’s structure. For orchard managers, this is liberating news: it suggests that the search for elite teak germplasm need not be constrained geographically, and that provenance trials across India can be mined for superior clones regardless of where the planting site sits on the map.

Beyond its immediate practical recommendations, the study is a quiet argument for patience in forest genetics. Trees operate on decadal timescales, and the traits that matter most, mature wood volume, stem form, long-term health, cannot be reliably judged in saplings. By revisiting a thirty-year-old clonal trial with contemporary statistical tools, the Jabalpur team has shown that old plantations are not merely aging assets but data goldmines, capable of answering questions their planters could scarcely have framed when the first ramets went into the ground. As India and other teak-growing nations face rising timber demand, shrinking natural forests, and a changing climate, the ability to squeeze maximum genetic information from long-term field trials, and to act on it by roguing the weak and multiplying the strong, may prove one of the most cost-effective tools in the entire forestry toolkit. The next generation of teak plantations, and the markets that depend on them, will be quietly shaped by decisions like these made among thirty-year-old trees in central India.

Subject of Research: Genetic evaluation of growth and qualitative traits in a mature teak clonal seed orchard using linear mixed models

Article Title: Genetic Evaluation of Teak Clonal Seed Orchard for Key Traits Using Linear Mixed Model

Article References: Prakash, D., Mohammad, N., Verma, N., Tripathi, K., & Kumar, P. (2026). Genetic Evaluation of Teak Clonal Seed Orchard for Key Traits Using Linear Mixed Model. Indian Journal of Genetics and Plant Breeding, 86(2), 241-251. https://doi.org/10.1007/s44489-026-00016-1

Image Credits: AI Generated

DOI: 10.1007/s44489-026-00016-1

Keywords: teak, Tectona grandis, clonal seed orchard, linear mixed model, REML, genetic gain, hierarchical clustering, growth traits, roguing, forest genetics, tree breeding, India

The study, published in Discover Forests, represents one of the few genuine long-term reassessments of biomass and carbon storage ever conducted in the tropical dry forests of Central India. A team led by Pranab Kumar Pati of Dr. Harisingh Gour Vishwavidyalaya in Sagar returned in 2025 to the same six forest communities first surveyed in 2001, using the same quadrat-based field protocols to make the two datasets directly comparable. The baseline came from earlier vegetation work in the Pathariya Hills, a rugged outcrop of the lower Vindhyan range built on Deccan Trap basalt, where steep slopes, gullies, ravines and plateaus create a mosaic of soils and habitats that support strikingly different forest assemblages within a small area.

The headline structural finding is stark. Tree density fell from 2,727 individuals per hectare in 2001-02 to 1,347 per hectare in 2025, a statistically significant decline with a large effect size. Yet basal area, the cross-sectional area of all tree stems measured at breast height, barely changed, slipping only marginally from 20.41 to 19.83 square metres per hectare. The explanation lies in the size distribution of the survivors. Mean basal area per tree nearly doubled across the landscape, from 0.0075 to 0.0147 square metres, indicating that the trees that disappeared were overwhelmingly small and young, while the remaining large individuals kept growing and now carry a disproportionate share of the stand’s wood.

That demographic shift is the quiet alarm buried in the data. Dense stands of many small stems have given way to forests dominated by fewer, larger trees, a pattern the authors attribute to selective removal of small and medium individuals and chronic suppression of regeneration under sustained disturbance and grazing. If younger cohorts continue to be depleted, the large residual trees that currently prop up the forest’s basal area, biomass and carbon stocks will eventually age out without replacement, opening canopy gaps, reducing productivity and undermining the ecosystem’s resilience. The structural stability visible today may simply be a lag effect, a demographic imbalance waiting to surface.

The biomass numbers themselves reveal the study’s central paradox. Total biomass across the complex rose from 116.25 to 120.18 megagrams per hectare, a net landscape-level gain of only 3.2 percent that was not statistically significant. But that modest average is the arithmetic of two diverging worlds. At relatively protected Site 1, biomass surged 81 percent, from 28.71 to 151.63 megagrams per hectare, and Site 2 gained 42 percent. At heavily disturbed Site 3, biomass collapsed by half, from 100.87 to 49.57 megagrams per hectare, and Site 6 lost 52 percent, falling from 169.22 to 80.71 megagrams per hectare. Site 4 remained essentially flat. The forest complex is not one carbon store but a patchwork of sinks and sources, and the average erases the difference.

The driver of that divergence is disturbance intensity. Sites 3 and 6 face severe ongoing pressure from logging, lopping, fuelwood extraction, recurrent fire and livestock grazing, with commercially valuable species such as Anogeissus latifolia, Tectona grandis and Santalum album regularly felled illegally. The remaining sites, shielded by stricter Forest Department protection, show no comparable stress. The study’s correlation analysis reinforces the mechanism: basal area was strongly and positively related to total biomass, while stem density showed no significant relationship, confirming that large trees, not tree counts, govern carbon storage in these forests. Where mature individuals are selectively removed, the carbon goes with them.

Species-level analysis adds another layer of concern. Tectona grandis, the teak that characterizes Central Indian dry deciduous forests, contributed the largest biomass gain at 23.09 megagrams per hectare, a recovery the authors link to the gradual strengthening of protection after the extensive teak felling of the 1950s. Butea monosperma, a disturbance-tolerant, fire-resistant, light-demanding species with low palatability to livestock, added 8.23 megagrams per hectare and now dominates the most degraded sites. That dominance is not good news. It signals ecological filtering under chronic disturbance, canopy opening and the progressive loss of shade-tolerant, late-successional taxa, a trajectory toward biotic homogenization in which a handful of resilient species replace a diverse community.

Meanwhile, several ecologically important native species lost ground. Albizia lebbeck, Bridelia retusa, Diospyros melanoxylon, Elaeodendron glaucum, Lannea coromandelica and Madhuca indica all declined in biomass contribution, with losses ranging from roughly 3.8 to 7.6 megagrams per hectare. The authors caution that high biomass in stands increasingly dominated by Butea monosperma should not be mistaken for ecosystem health. Carbon stocks can be partially maintained even as species diversity, functional trait breadth and adaptive capacity erode, leaving the forest less productive, less stable and less able to sequester carbon reliably under future climatic variability.

Methodologically, the study is a model of careful, non-destructive estimation. Aboveground biomass was calculated with the Chave allometric model for tropical dry forests, incorporating field-measured diameters and species-specific wood specific gravity values drawn from an Indian inventory, while belowground biomass followed the Cairns equation for adults and IPCC conversion factors for juveniles. Carbon stocks were derived by applying the standard IPCC carbon fraction of 0.5 to combined above- and belowground biomass. Because the temporal data did not consistently meet assumptions of normality and sample sizes were constrained by the original survey design, the team used the Mann-Whitney U test for temporal comparisons and quantified effect sizes with Hedges’ g, an appropriately conservative approach they acknowledge should be corroborated by larger future samples.

The findings carry clear implications for climate policy and forest management in a country where tropical dry forests cover nearly 42 percent of the total forest area and almost 89 percent of Madhya Pradesh’s forest cover. The authors call for stricter disturbance regulation at the most degraded sites, enrichment planting and assisted regeneration of declining native species, community participation in protection, and the establishment of permanently marked monitoring plots with high-precision georeferencing, which would remove the relocation uncertainties inherent in resampling historical, unmarked quadrats. Quantitative disturbance indices combining field measurements with remote sensing would further sharpen the link between specific pressures and carbon outcomes. The broader lesson is one that resonates far beyond the Pathariya Hills: headline carbon numbers can mask ecological degradation, and protecting the large trees of today means little without safeguarding the recruits that must become tomorrow’s canopy. In the accounting of forest carbon, what survives matters even more than what is stored.

Subject of Research: Long-term changes in forest biomass and carbon stocks in a tropical dry deciduous forest in Central India

Article Title: Temporal dynamics of biomass and carbon stocks over twenty five years in the Pathariya forest complex of Central India

Article References: Pati, P. K., Rajput, N. S., Kaushik, P., Khan, M. L., & Khare, P. K. (2026). Temporal dynamics of biomass and carbon stocks over twenty five years in the Pathariya forest complex of Central India. Discover Forests, 2(1), Article 70. https://doi.org/10.1007/s44415-026-00133-5

Image Credits: AI Generated

DOI: 10.1007/s44415-026-00133-5

Keywords: forest biomass, carbon stocks, tropical dry deciduous forest, Central India, anthropogenic disturbance, tree density, basal area, forest degradation, Butea monosperma, Tectona grandis, carbon sequestration, long-term monitoring