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forêts déforestation
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‘We are perilously close to the point of no return’: climate scientist on Amazon rainforest’s future
(29/06) - Jonathan Watts,Carlos Nobre,For more than three decades, Brazilian climate scientist Carlos Nobre has warned that deforestation of the Amazon could push this globally important ecosystem past the point of no return. Working first at Brazil’s National Institute for Space Research and more recently at the University of São Paulo, he is a global authority on tropical forests and how they could be restored.
Brazil records 62% jump in area burned by forest fires: monitor
Donald Trump has ordered that swathes of America’s forests be felled for timber, evading rules to protect endangered species while doing so and raising the prospect of chainsaws razing some of the most ecologically important trees in the US. The president, in an executive order, has demanded an expansion in tree cutting across 280m acres (113m hectares) of national forests and other public lands, claiming that “heavy-handed federal policies” have made America reliant on foreign imports of timber.
La destruction de l'Amazonie est un phénomène qui s’étend au-delà de la déforestation mais les neuf pays qui partagent cette ressource naturelle sont engagés à la protéger.
Past governments blamed the growing of coca – the base component of cocaine – for clearcutting, but a recent study shows otherwise
Over the past 60 years, the global forest area has declined by 81.7 million hectares, a loss that contributed to the more than 60% decline in global forest area per capita. This loss threatens the future of biodiversity and impacts the lives of 1.6 billion people worldwide, according to a new study published today by IOP Publishing in the journal Environmental Research Letters.
Climate analysts are astounded by such a high reading during the rainy season, and is the third monthly record this year
in a new study, we discovered that secondary forests across the Amazon are absorbing just 9.7% of the emissions created by the destruction of old-growth forests in the region. That’s despite these regrowing habitats occupying 28.8% of all deforested land.
At the global level, tropical areas are losing forests at a rate of 10 million hectares per year according to the FAO’s latest report on forest resources, and temperate areas, which are gaining forest area at a rate of 5 million hectares per year. Of the 10 million hectares of forest lost each year, just under two-thirds can be unambiguously attributed to agricultural expansion, with the remaining third being a combination of forest fires, logging and other factors.
Humanity injects an almost incomprehensible 42 billion tonnes of carbon dioxide (CO₂) into the atmosphere every year. The majority of this comes from burning fossil fuels, but a substantial portion, about 16%, arises from how we use the land. Most of these land-use emissions are caused by deforestation, particularly in the tropics.
Since the turn of the millennium, the world has been losing around 5 million hectares of forest every year. Nearly all of this occurs in the tropics; almost half of all deforestation takes place in Brazil and Indonesia. Three-quarters is driven by agriculture. Beef production is responsible for 41% of deforestation; palm oil and soybeans account for another 18%; and logging for paper and wood across the tropics, another 13%. These industries are also dominant in a few key countries.