The Global Crisis: Record Forest Loss in 2024
The numbers from 2024 are difficult to absorb. According to the Forest Declaration Assessment 2025, 8.1 million hectares of forest were lost that year — a level of destruction 63 percent higher than the trajectory needed to halt deforestation by 2030. Loss of humid tropical primary forest, the irreplaceable carbon reserves and biodiversity repositories that took centuries to form, spiked dramatically, with wildfire emerging for the first time as the dominant driver, responsible for nearly half of all tropical primary forest loss. The World Resources Institute confirmed 2024 as a record-breaking year for tropical forest destruction over the past two decades.
The scale of this crisis is inseparable from how wealthy nations consume. A landmark 2025 study published in Nature by Princeton University researchers found that consumption-driven deforestation by 24 high-income nations — importing timber and agricultural commodities from tropical countries — was responsible for 13.3 percent of global range loss experienced by forest-dependent vertebrate species. On average, these rich countries caused international biodiversity losses 15 times greater than their domestic impacts. The United States, Germany, France, Japan, and China were among the top contributors. As the study's co-author David Wilcove stated directly: by importing food and timber, developed nations are effectively outsourcing extinction to the tropics.
The mechanism is straightforward but the scale is staggering. Global demand for soy, beef, palm oil, and timber creates market incentives that drive forest clearing in Brazil, Indonesia, the Democratic Republic of Congo, and across tropical Asia and Africa. Between 2001 and 2024, fires were responsible for approximately 150 million hectares of tree cover loss globally — roughly the size of Mongolia — with annual fire-induced forest disturbance in 2023-2024 running 2.2 times higher than the 2002-2022 average and three times higher within tropical regions. The Glasgow Leaders' Declaration of 2021, signed by over 140 countries pledging to halt and reverse forest loss by 2030, is not being honoured: 17 of the 20 countries with the largest area of primary forest show higher primary forest loss today than when the agreement was signed.
The Sundarbans: What Bangladesh Stands to Lose
Bangladesh's relationship with tropical deforestation is not that of a distant observer. The country hosts the largest share of the Sundarbans — the world's largest contiguous mangrove forest, spanning approximately 10,200 square kilometres across Bangladesh (62 percent) and India (38 percent). Declared a UNESCO World Heritage Site in 1997 for the Bangladesh portion and in 1987 for India's, the Sundarbans is not simply a forest. It is the primary coastal defence for tens of millions of people in southwestern Bangladesh, a carbon sink of global significance, and one of the most biodiverse ecosystems on Earth — home to 334 plant species, 49 mammalian species, approximately 260 bird species, and the only mangrove habitat in the world that contains tigers.
The Sundarbans is shrinking and weakening. Remote sensing research published in 2025 tracking vegetation change from 1975 to 2025 found that dense vegetation in the Sundarbans declined by over 34 percent across five decades, with the maximum deforestation occurring between 2015 and 2025 in the southern and southeastern zones. A separate study published in Nature Communications Earth and Environment found that approximately 610 to 990 square kilometres of Sundarbans mangrove — between 10 and 15 percent of the total area — showed declining ecological resilience as of 2024, with the central and southeastern zones most vulnerable to disturbance.
The total area of the Sundarbans had already shrunk by 210 square kilometres between 1967 and 2015-16, and by 451 square kilometres since 1904. The surrounding sea level is rising more than twice as fast as the global average. Soil salinity in Bangladesh's Sundarbans region increased sixfold between 1984 and 2014, and up to fifteen times in certain areas, with projections that many parts will reach near ocean-level salinity by 2050. Research estimates that a one-metre rise in sea level would cause agricultural losses from salinity-induced land degradation as high as $597 million. The implications for 2.7 million Bangladeshis living in the Sundarbans region — where around half the population lives below the poverty line and most livelihoods depend on the forest and its waters — are existential.
Cyclones, Salinity, and Compound Threats
The Sundarbans' function as Bangladesh's coastal shield has been tested repeatedly and with escalating intensity. Cyclone Remal in May 2024 struck the Sundarbans with catastrophic effect, causing tidal surges that uprooted trees, drowned large numbers of spotted deer and other animals, and partially submerged the forest for nearly 24 hours. Four major cyclones have hit the Sundarbans in recent years, killing nearly 250 people and causing losses estimated at nearly $20 billion. Cyclone Amphan alone in 2020 destroyed 28 percent of the Indian Sundarbans region and caused $12 billion in damage, displacing 2.4 million people in India and 2.5 million in Bangladesh.
The threat matrix facing the Sundarbans is not simply climate change acting on a healthy forest. It is climate change compounding pre-existing anthropogenic pressures: illegal timber extraction facilitated by corruption within the forest administration, shrimp farming that encroaches on and degrades mangrove cover, overfishing and unsustainable collection of non-timber forest products, pollution from industrial and agricultural runoff, and reduced freshwater inflow following construction of the Farakka Barrage upstream on the Ganges, which has altered the salinity and hydrology of the Sundarbans over decades. A 2025 ScienceDirect systematic review drawing on twenty years of research identified this compounding of pressures as the defining challenge: no single intervention addresses all drivers simultaneously, and governance frameworks have remained fragmented across institutional mandates and the India-Bangladesh border.
The dominant Sundri tree (Heritiera fomes), for which the Sundarbans takes its name, is emblematic of this compound stress. "Top-dying" disease, which progresses with increasing salinity, has reduced pure Sundri stands in Bangladesh's portion of the Sundarbans by 21 percent since 1926. As salinity continues to rise, Sundri is increasingly replaced by less ecologically significant species, changing the forest's composition and reducing its capacity to provide the structural complexity that supports biodiversity and resilience.
Government Response: Frameworks and Their Limits
Bangladesh has developed an extensive set of policy frameworks acknowledging the Sundarbans' vulnerability. The National Adaptation Programme of Action, the Bangladesh Climate Change Strategy and Action Plan, the Bangladesh Delta Plan 2100, and the Mujib Climate Prosperity Plan all address coastal ecosystem protection in various forms. The Forest Department has developed 12 raised land platforms with freshwater ponds to provide wildlife shelter during extreme weather events — a targeted response to the Remal catastrophe. Bangladesh is party to the Convention on Biological Diversity, the Ramsar Convention on Wetlands, and maintains the UNESCO World Heritage designation, all of which create international conservation obligations.
The gap between policy aspiration and on-the-ground reality is, however, substantial. Illegal timber logging remains what researchers have described as "an open secret" in the Sundarbans — facilitated by the collaboration between corrupt forest officials and logging networks. The rapidly expanding shrimp farming industry continues to exert pressure on mangrove boundaries. Despite Bangladesh having more than 200 domestic environmental laws, a systematic review of wildlife conservation legislation found that wildlife populations in the Sundarbans have continued declining sharply. The legal frameworks exist; what enforcement mechanisms, resources, and institutional accountability structures can deliver on them remains the central unsolved problem.
Meaningful conservation also requires cross-border coordination with India, since the Sundarbans ecosystem does not respect national boundaries. While India and Bangladesh have begun collaborative projects, a gap remains between policy intentions and operational action due to financial constraints and logistical complexity. The most recent census data estimates approximately 125 tigers on Bangladesh's side of the Sundarbans — a figure that conservation organisations consider positive relative to previous decades, but fragile given continuing habitat pressures.
NGO Efforts and Community-Based Conservation
Civil society and international organisations have been working in the Sundarbans for decades, with approaches that have evolved toward community-based conservation as the most sustainable model. The core insight driving these programmes is that conservation cannot succeed against local communities whose livelihoods depend on the same resources — it must work with them, building alternative income sources that reduce dependence on forest extraction.
Sustainable livelihood projects targeting Sundarbans-dependent communities have focused on alternative income generation through beekeeping, crab farming, ecotourism, and improved fishing practices that reduce destructive bycatch. Co-management approaches — in which local communities participate meaningfully in forest governance and resource management — have shown positive outcomes in reducing illegal extraction in areas where they have been implemented with genuine resource transfer and accountability mechanisms. Mangrove replanting programmes have restored some areas, though researchers consistently note that these efforts remain insufficient in scale and often struggle with competing land-use pressures from shrimp farming interests and agricultural encroachment.
Satellite monitoring and GIS mapping technologies are increasingly central to conservation efforts, providing real-time data on vegetation change, deforestation hotspots, and ecosystem health that allow more targeted interventions. Mobile-based early warning systems for cyclones have materially improved community preparedness. The 2025 Nature communications study on mangrove resilience — identifying that maximum canopy height is the strongest driver of Sundarbans forest resilience — has practical implications for which areas prioritise protection versus restoration in conservation planning.
The Rich Nations Question: Who Bears Responsibility
The connection between global deforestation and rich nations' consumption patterns has a dimension that is directly relevant to Bangladesh's position on the issue. Bangladesh is not a significant driver of tropical deforestation — it is one of its most acute victims. The Sundarbans is degraded by climate change whose primary historical causes lie in the emissions of industrialised economies. Bangladesh contributes less than 0.35 percent of global greenhouse gas emissions yet faces climate impacts — sea level rise, cyclone intensification, salinity intrusion — that are among the most severe experienced anywhere in the world.
This asymmetry has shaped Bangladesh's posture in international climate and forest negotiations. Bangladesh has been a consistent and vocal advocate for loss and damage mechanisms — frameworks through which countries disproportionately affected by climate change can receive compensation from those most responsible for it. The Forest Declaration Assessment 2025 found that financial flows remain "grossly misaligned" with forest goals, with harmful subsidies outweighing green subsidies by over 200:1, and funds flowing to forest countries and local actors still far below what is needed to deliver on 2030 targets. For Bangladesh, this is not an abstract complaint — it is the difference between having resources to implement Sundarbans conservation at adequate scale and being unable to do so.
Future Outlook: A Forest Under Compound Pressure
The trajectory for the Sundarbans without transformative intervention is bleak. Scientists warn that large parts of the forest may be submerged by the end of this century as sea levels rise. The compound pressures — climate intensification, salinity intrusion, illegal extraction, insufficient freshwater inflow, declining ecological resilience across 10-15 percent of the forest — are operating faster than conservation interventions can currently counteract them.
What genuine protection of the Sundarbans requires is a convergence of actions at multiple scales: sustained international climate finance directed toward Bangladesh's adaptation and conservation needs, cross-border governance improvements with India that address the ecosystem as a unified whole, domestic enforcement of existing environmental laws that closes the gap between Bangladesh's extensive legal frameworks and their implementation, community-based conservation programmes funded at scale rather than project by project, and engagement with the global deforestation framework that places responsibility on importing nations whose consumption drives tropical forest loss worldwide.
The Sundarbans survived colonial extraction, cyclones, and decades of development pressure. Whether it survives the compound pressures of the twenty-first century depends on whether the international community — and particularly the rich nations whose consumption habits accelerate global warming and whose financing decisions determine what is possible for vulnerable countries — treat the Sundarbans not as Bangladesh's problem but as a shared obligation.
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