We handpick and explain the most important stories at the intersection of climate, land, food and nature over the past fortnight.

This is an online version of Carbon Brief’s fortnightly Cropped email newsletter. Subscribe for free here.

Key developments

Trump’s logging orders

IF A TREE FALLS: US president Donald Trump last week signed a pair of executive orders “to increase lumber production across national forests and other public lands”, Axios reported. The outlet explained that the first order “calls for considering new categorical exclusions” under the existing law that requires environmental reviews, while the second “promotes domestic timber production to replace imports”. The latter order dealt “a devastating blow” to forests on public lands, said Inside Climate News. The outlet added that “increasing timber production would likely target the larger, older trees that are the most critical to protect as climate change accelerates”.

QUESTIONABLE IMPACT: The Trump administration claims that increasing timber production will be “the next frontier in job creation and wildfire prevention”, USA Today reported. Timber groups and lawmakers representing rural districts were in agreement, the outlet said. It added: “But conservation groups and forestry experts say cutting down more trees doesn’t inherently reduce wildfire risk and can actually increase it.” The orders are “expected to face legal pushback”, USA Today said. 

NOT SO CLEAR CUT: Despite the claims of a viral Instagram post, the executive orders do not compel the clearing of 280m acres (1.1m square kilometres) of national forest, noted a Yahoo News factcheck. The outlet added that the total area of land affected by the orders is actually 251m acres (1m km2) and that “even in the most extreme scenario, the US logging industry wouldn’t have the sawmills or workers required” to clear-cut that much forest in the next four years. It said: “But whatever the scale, environmentalists warn that expanding logging while reducing oversight will damage fragile ecosystems, threaten old-growth forests, increase pollution and even worsen wildfires.”

Tit-for-tat tariffs

FOOD FIGHT: On Monday, China began imposing tariffs on US farm products, in what the New York Times called “the latest escalation of a trade fight between the world’s two largest economies”. China’s tariffs include a 15% levy on US-raised chicken, wheat and corn, along with a 10% levy on other food products, the newspaper reported. Describing the food tariffs as “a high impact yet low-cost weapon” in the US-China trade war, Bloomberg noted that “the Asian giant remains a key export market for largely Republican states in the midwest farm belt”. Alongside the new levy, it added that China also halted all American timber purchases and soybean imports from three US firms. The Washington Post mapped where tariffs could “hit” US farmers and jobs “the hardest”.

AG INDEPENDENCE: The latest move is part of China’s “broader strategy” to strengthen its food security since Trump’s first term, reported Business Standard, tracing a timeline of the country’s initiatives “to reduce its reliance on US imports”. US farmers and experts who spoke to Time magazine said they “know from experience” that Trump’s “incipient trade war will make things tougher” for them. The outlet added that “around 80% of the money the US government took in from tariffs on Chinese imports [during Trump’s first term] went back to paying farmers” affected by retaliatory tariffs. The US-China food trade fight will give Brazilian exporters “an opportunity to take an even bigger share of the Chinese market”, Reuters reported, adding that it “could also fuel already-high food inflation in Brazil”.

UH OH, CANADA: At the same time, China “open[ed] a new front in a trade war”, announcing tariffs on over $2.6bn worth of Canadian agricultural and food products on Saturday, according to Reuters. The measures include a 100% tariff on Canadian rapeseed oil and pea imports, the newswire explained. It said that China’s tariffs on Canada are being seen as a “warning shot” and “retaliati[on] against levies Ottawa introduced in October” on China-made electric vehicles and aluminium products. Canada’s 40,000 rapeseed farmers are now “caught in the middle of political tensions far outside [their] control” amid two trade fights, the Globe and Mail reported, with China’s moves combining with the “threat of 25% tariffs on $7.7bn of exports to the US, their largest market”.

Spotlight

Mining drives ‘destruction’ in Peru’s peatlands 

This week, Carbon Brief covers a new study that found that small-scale, artisanal gold mining in the Peruvian Amazon is a small but growing cause of “destruction” for the region’s carbon-rich peatlands.

Peatland loss due to small-scale gold mining in the Peruvian Amazon has released up to 0.7m tonnes of carbon – some 2.6m tonnes of carbon dioxide (CO2) – over the past 35 years, according to new research.

The study, published in Environmental Research Letters, used satellite imagery to determine where “artisanal” mining had driven deforestation in the Madre de Dios river plain. 

The researchers found that while only 5% of the mined area overlapped with known peatlands, 55% of this peatland loss occurred within just the past two years. 

They warned that mining in Peru’s peatlands is “happening at a scale sufficiently large to threaten the future existence of peatland on the Madre de Dios landscape”.

Mining-driven deforestation

Peatlands are carbon-rich, water-logged ecosystems that form slowly over time as plant matter dies and partially decomposes. 

Although they make up only 3% of the Earth’s land surface, peatlands are estimated to contain 600bn tonnes of carbon – more than is stored in all of the world’s forests combined. 

Despite their importance as carbon stores, peatlands are underprotected compared to other “high-value” ecosystems, such as tropical forests. A recent study found that just 17% of peatlands are protected globally. 

Artisanal gold mining – referring to mining done informally and with basic tools – is one of the main drivers of deforestation in the Peruvian Amazon in recent decades. It is highly concentrated around the Madre de Dios river, which cuts through the south-eastern part of the country. 

To understand the impact of this type of mining, the researchers used 35 years of data from NASA’s Landsat satellite to monitor changes in the region around the Madre de Dios river known as its alluvial plain. They then used an algorithm to differentiate deforestation that was caused by artisanal mining from deforestation due to other factors. 

The researchers identified 11,356 hectares of mining in the alluvial plain, two-thirds of which was concentrated in a 50-kilometre stretch of river.

Peatland loss

The researchers then overlaid the identified mining sites with maps of the Madre de Dios peatland complex.  

They identified more than 550 hectares of peatland that had been lost to artisanal mining between 1985 and 2023. They estimated that this “destruction” released between 0.2m and 0.7m tonnes of carbon into the atmosphere, resulting in emissions of up to 2.6MtCO2. 

Moreover, mining in peatland areas has increased twice as quickly as the average rate of increase across the plain as a whole over the past five years. More than 10,000 hectares of peatland, containing between 3.5 and 14.5m tonnes of carbon, are at “imminent risk”, the authors warn.

Dr John Householder, a researcher at Germany’s Karlsruhe Institute of Technology and an author of the study, said in a statement:

“Even within a human generation, it is quite possible that large peat deposits can disappear from the landscape, before science has had a chance to describe them. For those peat deposits that are already known, these research findings are a wakeup call to protect them.”

News and views

IWATE ABLAZE: Japan was faced with its “worst wildfire in half a century” in early March, Agence France-Presse reported. The fire, which broke out in the Iwate prefecture on the country’s Pacific coast, “engulfed around 2,600 hectares” and “left one dead”, the newswire said. The Japan Times noted that “unusually dry weather, strong winds and the city’s terrain have made the situation worse than usual”. Dr Akira Kato, a forestry professor at Japan’s Chiba University, told the outlet: “There is a big misconception that fires don’t occur in humid climates, but this is actually not true, and forest fires can occur anywhere in the world.”

EXTINCTION LITIGATION: Australia’s environment minister, Tanya Pilbersek, is being sued by conservation non-profit the Wilderness Society for failing in “her promise to halt Australia’s ongoing extinction crisis”, the Sydney Morning Herald reported. The case does not mention Pilbersek by name but alleges “successive environment ministers are to blame” for failing to “implement plans to save endangered animals”, the newspaper said. Pilbersek, it added, has responded by saying “she had made double the number of [nature] recovery plans than her predecessor”. Separately, ABC News reported that Tasmania’s salmon industry is being hit by mass die-offs due to bacterial disease, with “chunks” of thousands of dead salmon washing up ashore.

ARMY OF ME: After the “worst drought in decades”, Context News reported that Zimbabwe’s maize farmers are now battling an infestation of the fall armyworm. The pests are “[n]ative to the Americas” but have “spread across almost all of sub-Saharan Africa” in just two years, according to the UN Food and Agriculture Organization (FAO). The outlet quotes Patrice Talla of the FAO saying: “Climate change has contributed to outbreaks of migratory pests beyond their regions of origin, notably the fall armyworm.” According to the story, the armyworm “reduces maize yields by up to 73% and inflicts annual economic losses valued at $9.4bn in Africa alone”, its “crop-munching” impacts also affecting Malawi, Zambia, Togo, Benin and Swaziland.

SUDANESE BREW: Excelsea coffee – discovered in South Sudan nearly a century ago – is drawing international interest “amid a global coffee crisis caused mainly by climate change”, the Associated Press reported. The coffee variety currently accounts for “less than 1% of the global market” but production trials by agroforestry company Equatoria Teak indicate that it can “thrive in extreme conditions, such as drought and heat, where other coffees cannot”, according to the newswire. While the beans “represent a chance at a better future” for the country, farmer Elia Box – who lost half his coffee crop to fire in early February – told AP that long-term crops, such as coffee, need stability: “Coffee needs peace.”

ESTATE SALE: A “mystery donor” made a record land purchase in the Scottish Highlands on behalf of the Scottish Wildlife Trust – “the largest donation in the trust’s 60-year history”, according to the Times. It quoted the charity saying that by securing the 7,618-hectare Inverbroom Estate, it could “significantly enhance its efforts to protect and restore wildlife at scale across Scotland”. Furthermore, the newspaper noted that “the trust has made a commitment to the donor that none of the work at Inverbroom would be funded through the sale of carbon credits”.

ILLEGALLY FELLED: According to a new report covered by Mongabay, nearly all of the deforestation in the Brazilian Amazon in the past year was illegal. It said Brazilian non-profit Center of Life Institute (ICV) found that 91% of deforestation in the Amazon and 51% in the tropical savanna of the Cerrado lacked authorisation between August 2023 and July 2024. The outlet noted that under Brazilian law, landowners with a government-issued permit can clear up to 20% and 80% of the vegetation on their property in the Amazon rainforest and Cerrado, respectively. However, it added that the ICV researchers found that much of the deforestation captured by Brazil’s national space agency “wasn’t registered in official databases” for deforestation permits. Separately, BBC News reported that a new highway being built for the COP30 UN climate talks in Belém is “cutting through tens of thousands of acres” of protected Amazon rainforest.

Watch, read, listen

FOREST FOR THE TREES: Dialogue Earth explained how extreme heat is affecting China’s trees – and magnifying other threats to the plants.

IN BLOOM: An in-depth piece in the New York Times covered how a warming ocean is “throwing plankton into disarray”, putting the entire marine food web at risk. 

RADICAL INTELLIGENCE: A Noema long read looked at how studying intelligence as a biological property across species can “open up a world of commonalities” across all life.  

EXTRACTIVE INVESTORS: The Guardian examined the investor-state lawsuit levelled against Greenland that is seeking to reverse its uranium mining ban.

New science

• Research published in PLOS Climate found that smallholder farmers in north-eastern Madagascar reported that they perceived increased temperature and decreased rainfall over the past five years. However, despite reporting concerns over their ability to feed their families in the future, only 21% of the 479 farmers surveyed reported changing their farming practices.
• Tropical forests in the Americas are changing certain functional traits, such as wood density, in response to warming temperatures – “but at a rate that is fundamentally insufficient to track climate change”, a new study published in Science found. Researchers used data from 415 forest plots over 1980-2021, along with temperature data, to determine how forest composition was changing in response to warming.
• A new review in Environmental Research Letters scanned nearly 10,000 scientific papers to identify the impacts of trees outside of forests on human well-being in South Asia. While most of the literature reported an increase in economic and material well-being, negative outcomes documented included a loss of agency, political voice and social equity – “in particular with afforestation and monoculture plantation projects”.

In the diary

• 17-18 March: First part of the 30th annual session of the International Seabed Authority | Kingston, Jamaica
• 21 March: International Day of Forests
• 22 March: World Water Day
• 29 March: Global Day of the Landless

Cropped is researched and written by Dr Giuliana Viglione, Aruna Chandrasekhar, Daisy Dunne, Orla Dwyer and Yanine Quiroz. Please send tips and feedback to cropped@carbonbrief.org

The post Cropped 12 March 2025: Trump and timber; Food fights; Peru’s peatlands appeared first on Carbon Brief.