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01 / 05
Trees Stalling Effects of Global Heating in Eastern US

The Guardian | Forests

Trees Stalling Effects of Global Heating in Eastern US

“Scientists have long been puzzled by a so-called ‘warming hole’ over parts of the US south-east where temperatures have flatlined, or even cooled, despite the unmistakable broader warming trend.

A major reason for this anomaly, the new study finds, is the vast reforestation of much of the eastern US.”

From The Guardian.

The Brussels Times | Forests

Forest Growth Surpasses Harvesting Levels in Most of EU

“Forest growth exceeded harvesting levels in 23 EU countries with available data in 2023.

A simple way to gauge whether wood production is sustainable is to compare the amount of wood harvested or otherwise removed in a year with the forest’s natural growth, known as the net annual increment, Eurostat reported on Friday.

In 2023, the largest surplus of growth over removals was recorded in Romania at 39.9 million cubic metres, followed by Sweden at 26.4 million and Poland at 26.3 million.

Estonia was the only country where removals were higher than growth, with 11.6 million cubic metres removed compared with a net annual increment of 9.1 million.”

From The Brussels Times.

Mongabay | Forests

Colombia Poised for Another Drop in Deforestation in 2025

“Deforestation in Colombia appears to have declined in 2025, with notable reductions in several departments that have historically struggled with forest loss.

An estimated 36,280 hectares (89,650 acres) of forest were lost during the first three quarters of the year, a 25% drop from the 48,500 hectares (about 119,850 acres) recorded over the same period in 2024, according to the Institute of Hydrology, Meteorology and Environmental Studies (IDEAM), a government agency.”

From Mongabay.

China Daily | Forests

China’s Nearly 8.5m Hectares of Land Greening in 2025

“China completed about 8.47 million hectares of land greening in 2025, according to a media release from the National Forestry and Grassland Administration.

This included afforestation on nearly 3.6 million hectares, with the rest achieved through the restoration of degraded grasslands, the release said on Thursday as the administration’s annual work conference continues.

To date, the country’s forest coverage rate has increased to 25.09 percent, and its forest stock volume has reached almost 21 billion cubic meters, it revealed.

During the 14th Five-Year Plan period (2021-25), China accomplished a total of 36.6 million hectares of land greening, including 12.3 million hectares of afforestation, according to the administration. During this time, an average of almost 3.1 million hectares of degraded grassland were restored annually. The consistent efforts in restoring degraded grassland have helped maintain the comprehensive vegetation coverage of grasslands above 50 percent.

The release especially highlighted remarkable progress in desertification control. Over the past five years, the country managed to treat roughly 10.1 million hectares of desertified land and also close off almost 1.9 million hectares of such land to prevent deterioration, it stated.”

From China Daily.

bioRxiv | Forests

Trial of Genetically Engineered American Chestnut Reveals Greater Fungal Blight Tolerance

“The American chestnut (Castanea dentata) was a foundational forest canopy species in eastern North America until an imported fungal blight (caused by Cryphonectria parasitica) rendered it functionally extinct across its native range. Biotechnological approaches, such as the Darling 54 (D54) transgenic line, have potential for future restoration of American chestnut, but field-based evaluations of blight tolerance have been limited. Field-based evaluation is slowed by the many years it takes for seedlings to grow to saplings, then to full-fledged trees. Current regulatory restrictions also constrain the testing of transgenic chestnuts to just within permitted orchards. This research reports on a two-year field trial of four- to five-year-old, T3- and T4-generation transgenic D54(+) saplings and their non-transgenic full-siblings in a permitted orchard in southern Maine. The field trial deployed a randomized block design with wild-type American chestnut and Chinese chestnut (Castanea mollissima) controls. In the two years, 261 trees were branch-inoculated in three replicates with EP-155, a highly virulent strain of the fungal blight. D54(+) trees consistently outperformed their negative siblings and outperformed Chinese chestnut in a limited comparison. To our knowledge, this is the first multi-year field trial of fungal blight inoculations comparing advanced generation D54 families. This field-based evaluation of blight tolerance in D54 transgenic chestnuts contributes to the goal of restoring this iconic species to its eastern North American native range.”

From bioRxiv.