# The boreal forest stores more carbon than all tropical forests combined > Stretching unbroken across Russia, Canada, and Scandinavia, the boreal forest, also known as the taiga, is the largest terrestrial biome on the - Author: Maxime Marquette - Publisher: MadMax (https://mad-max.co) - Section: Column - Published: 2026-07-07 - Canonical URL: https://mad-max.co/en/article/la-foret-boreale-stocke-plus-de-carbone-que-toutes-les-forets-tropicales ## Introduction: the northern hemisphere's overlooked green giant ### A biome far bigger than most people imagine Stretching unbroken across **Russia**, **Canada**, and **Scandinavia**, the **boreal forest**, also known as the **taiga**, is the largest **terrestrial biome** on the planet, far ahead of the tropical forests that nonetheless occupy a much bigger place in the public imagination whenever the conversation turns to carbon and global climate. *There is something quite striking about the fact that it is a cold forest, often seen as austere and unremarkable, that holds the record for carbon storage, rather than the lush tropical forests we instinctively associate with biodiversity and global ecological richness.* ### Twice as much carbon per hectare as the tropics According to several specialized studies, the **boreal forest** stores roughly **twice as much carbon per hectare** as tropical forests, a ratio that often surprises members of the public used to thinking of the Amazon or Central African forests as the planet's main carbon reservoirs. This difference is largely explained by the nature of the soil beneath this immense northern forest. Unlike **tropical forests**, where carbon is mainly stored in the **living biomass** of the trees themselves, the taiga stores most of its carbon in its **peaty soils**, often frozen at depth, which have been accumulating organic matter for thousands of years without ever fully decomposing, thanks to cold temperatures that considerably slow down the microbial activity responsible for that decomposition. Scientists sometimes describe this underground reserve as an enormous, slow-motion savings account, one that has been quietly accruing interest since long before recorded human history. ## Why taiga soils are so rich in carbon ### The key role of permafrost and peaty soils **Permafrost**, that permanently frozen ground beneath the surface, plays a central role in the boreal forest's carbon-storage capacity. By keeping temperatures consistently low, it considerably slows the decomposition of organic matter accumulated over millennia, allowing enormous quantities of carbon to stay trapped in the soil instead of being released into the atmosphere as carbon dioxide or methane. These **peaty soils** form slowly, year after year, through the accumulation of partially decomposed **plant matter** under cold and often waterlogged conditions. This process, extremely slow on a human timescale, has allowed considerable carbon reserves to build up over periods measured in thousands of years rather than decades. In some areas, researchers have measured peat layers several meters deep, each centimeter representing years, sometimes decades, of accumulated growth. ### An accumulation that took place over millennia This **enormous carbon reserve** did not form overnight, but is the result of a continuous process spanning **millennia**, dating back to the last ice age in certain regions. Every year, a thin additional layer of organic matter is added to the soil, gradually contributing to the colossal reserve that the taiga represents today on a global scale. This **slow accumulation** contrasts sharply with the **potential speed** of its release should climate conditions change significantly, a timing mismatch that particularly worries scientists specializing in the carbon cycle and high-latitude climatology. Building something over ten thousand years only to see it unravel within a single century is precisely the kind of asymmetry that keeps this field of research so urgent. ## A fragile reserve in the face of climate change ### Thawing permafrost, a very real threat This considerable carbon reserve is now threatened by the **accelerated warming** of high latitudes, a region of the globe where temperatures are rising faster than the global average, a phenomenon scientists call **Arctic amplification**. This warming is causing a gradual thaw of permafrost that has remained stable for millennia until now, risking the release of some of the accumulated carbon. *This potential tipping point strikes me as particularly worrying: we are talking about a carbon reservoir built up over thousands of years, which could be released into the atmosphere in just a few decades if the thaw continues at a sustained pace.* ### From carbon sink to source of emissions The **most worrying risk** identified by researchers is that the **boreal forest**, which has served for millennia as a long-standing **carbon sink**, could turn into a **net source of emissions** of greenhouse gases if permafrost thaw accelerates enough. Should this shift be confirmed on a large scale, it would have major consequences for global efforts to fight climate change. This phenomenon is being closely watched by **scientists**, since it illustrates an example of **positive climate feedback**: warming causes thawing, which releases carbon, which in turn intensifies warming, potentially creating a self-reinforcing loop if no mitigation measures are put in place in time. Feedback loops of this kind are notoriously difficult to reverse once they gain momentum, which is exactly why researchers are so eager to catch the earliest possible warning signs. ## The boreal forest's importance for global climate balance ### An underestimated role in climate discussions Despite its **considerable importance**, the **boreal forest** tends to feature less in public climate discussions than tropical forests, which receive wider media coverage due to their spectacular biodiversity and their exposure to direct, visible deforestation. Yet when it comes to carbon storage, the taiga plays a role at least as decisive for global climate balance. **Forest ecology researchers** regularly call for greater **scientific and political attention** to this biome, particularly regarding the protection of peaty soils and rigorous monitoring of permafrost evolution in the regions affected by this accelerated thaw. ### International research efforts underway Several **research institutions**, notably linked to the **FAO** and **NASA**, run **monitoring programs** tracking the evolution of the boreal forest and its permafrost, combining satellite observations with field measurements to better understand the speed and scale of this thaw across different regions of the taiga, from Siberia to Canada and Scandinavia. This **international research** is essential for refining **global climate models**, which need to accurately account for this immense carbon reserve's potential contribution to future greenhouse gas emissions, a parameter still surrounded by significant uncertainty depending on the scenarios researchers consider. Getting that number even roughly right matters enormously, since it directly shapes how aggressively governments plan to cut emissions elsewhere in the system. ## What this carbon reserve teaches us about ecosystems ### A lesson in humility about natural balances The boreal forest example shows just how much **ecosystems** can play **essential climate roles** without this being immediately visible or spectacular. Unlike a dense tropical forest, instantly recognizable as a biodiversity reservoir, the taiga hides most of its climate contribution beneath the surface, in soils we don't naturally associate with such a decisive role in the global carbon balance. *This story reminds me that we should sometimes be wary of preconceived notions about what really matters for the climate: it isn't always the most spectacular landscapes that play the most decisive role in the planet's great balances.* ### An invitation to rethink our conservation priorities This discovery invites us to rethink **global priorities** in **forest conservation**, paying greater attention to ecosystems sometimes overlooked in favor of more widely publicized forests. Protecting the boreal forest and its peaty soils could prove just as crucial for global climate balance as preserving tropical forests, a message scientists are trying to get across to international policymakers. This **awareness** is growing, but remains insufficient given the scale of the climate role played by this biome, which is why many researchers continue to push for significantly stronger scientific monitoring and protection of these northern territories. ## Comparing the taiga and the Amazon without pitting them against each other ### Two carbon reservoirs with different logics *I think these two forests are too often compared as though we had to choose which one to protect first, when in fact they serve complementary rather than competing climate functions. Protecting one while ignoring the other would mean neglecting an entire part of the global climate equation, which would be especially damaging for the whole planet in the long run.* The **Amazon rainforest** stores most of its carbon in living biomass, its towering trees and dense vegetation, which makes it particularly vulnerable to direct deforestation, since every felled tree immediately releases part of its stored carbon. The **boreal forest**, on the other hand, stores most of its carbon in the soil, which makes it less vulnerable to conventional logging but far more sensitive to temperature shifts that affect permafrost at depth. This difference in mechanism explains why protection strategies must be tailored to each biome: curbing deforestation for the Amazon, and limiting warming at high latitudes to preserve the stability of the taiga's permafrost, two complementary approaches rather than interchangeable ones. International policymakers would do well to build this distinction more thoroughly into their respective climate strategies, rather than applying a single template to fundamentally different ecosystems, whether the humid tropics or the frozen expanses of the far north. ### Less spectacular biodiversity, but just as essential While the **boreal forest** hosts less spectacular biodiversity than the tropics, it is nonetheless home to species perfectly adapted to its **extreme conditions**, such as certain large mammals, migratory birds, and cold-resistant plant species, which depend directly on the **stability of this ecosystem** for their long-term survival, from one season to the next and one decade to the next. This **taiga-specific biodiversity** remains under-studied compared to that of tropical forests, a **research imbalance** that several scientific institutions are now trying to correct by strengthening **study programs** devoted specifically to high-latitude ecosystems, from northern Canada to eastern Siberia. Funding for this kind of long-term, cold-climate fieldwork has historically lagged behind tropical research budgets, even though the stakes are arguably just as high. ## What to take away about the boreal forest ### A colossal and fragile carbon reservoir In short, the **boreal forest**, which spans **Russia**, **Canada**, and **Scandinavia**, is the largest **terrestrial biome** on the planet and stores roughly twice as much carbon per hectare as tropical forests, mainly within its deeply frozen **peaty soils**. This considerable reserve, built up over millennia, is now threatened by accelerated warming at high latitudes. The gradual thaw of **permafrost** could turn this centuries-old carbon sink into a net source of greenhouse gas emissions, a scenario scientists are closely monitoring through international research programs that combine satellite observations with field measurements. ### A reserve that urgently needs protecting This story is a reminder that the world's major climate balances do not play out solely in the most widely publicized tropical forests, but also in colder, less spectacular territories, whose role nonetheless remains absolutely decisive for the climate future of the entire planet. Giving greater **scientific and political attention** to the boreal forest and its **peaty soils** now looks like an issue just as urgent as fighting tropical deforestation, two priorities that should ideally move forward together in global climate strategies over the coming decades. This point, still too rarely highlighted at major international climate conferences, deserves a far more central place in future global negotiations on ecosystem protection. Until that shift in attention happens, one of the planet's largest carbon reserves will keep operating largely out of the public eye, several degrees below freezing and several steps removed from the evening news. **By Maxime Marquette, columnist** ## Columnist's transparency note ### Editorial stance I am not a journalist but a **columnist and analyst**. My expertise lies in observing and analysing the geopolitical, economic and strategic dynamics that shape our world. My work is to take political strategies apart, to understand global economic movements, to put the decisions of international actors in context and to offer analytical perspectives on the changes that are redefining our societies. I do not claim the cold objectivity of traditional journalism, which stops at reporting facts. **I claim analytical clarity**, rigorous interpretation and a deep understanding of the complex issues that concern us all. My role is to give meaning to the facts, to place them in their historical and strategic context, and to offer a critical reading of events. ### Method and sources This text keeps the basic distinction between **verified facts and interpretive analysis**. The rule never changes: a factual claim is published only when a verifiable source supports it, and the sources this article actually used are listed under **Sources**, never here. **Primary source families** used by the publication, when the story has them: official statements from governments and international institutions, public statements by political leaders, reports from intergovernmental organisations, dispatches from recognised international news agencies. **Secondary source families**: specialised publications, internationally recognised news media, analyses from established research institutions, reports from industry organisations. When an article cites statistical, economic or geopolitical data, it comes from the institutions that produce it (intergovernmental organisations, central banks, national statistics offices), and the exact institution is named under **Sources**. ### Nature of the analysis The analyses, interpretations and perspectives in the analytical sections of this article are a **critical, contextual synthesis** based on the information available, the trends observed and the expert comments cited in the sources consulted. My role is to interpret these facts, to set them in the context of today's geopolitical and economic dynamics, and to give them a coherent meaning within the larger story of the changes shaping our time. These analyses reflect expertise built through continuous observation of international affairs and an understanding of the strategic mechanisms that drive global actors. This article describes a documented state of affairs on its publication date, not a prediction: later developments may shift its outlook. No update is promised in advance; when an article is corrected or completed, the change is dated in the text. ## Sources ### Primary sources - FAO — Foresterie, ressources sur les forêts mondiales — 2026 - Nature — Carbon cycle, ressources de recherche — 2026 - NASA — Observations satellitaires des écosystèmes terrestres — 2026 ### Secondary sources - National Geographic France — Rubrique Environnement — 2026 - Futura-Sciences — Rubrique Planète — 2026 - Sciences et Avenir — Actualités scientifiques — 2026 --- Source: Maxime Marquette, MadMax. When citing, name the author and link https://mad-max.co/en/article/la-foret-boreale-stocke-plus-de-carbone-que-toutes-les-forets-tropicales