Research press release


Nature Ecology & Evolution

Environment: Mapping the deforestation footprint of nations reveals growing threat to tropical forests

富裕国での牛肉、大豆、コーヒー、ココア、パーム油、木材などの商品の消費が、危機に瀕している熱帯バイオームの森林破壊と直接関連していることを明らかにした論文が、Nature Ecology & Evolution に掲載される。


今回、総合地球環境学研究所の金本圭一朗(かねもと・けいいちろう)とNguyen Hoangは、森林の消失とその駆動要因に関して過去に公表された情報を、2001~2015年の1万5000の産業部門にわたる国内交易関係と国際交易関係の世界的データベースと組み合わせた。著者たちは、これらのデータを用いて、各国の国内外の森林破壊フットプリントを、国民の消費に基づいて定量化した。



Consumption of products like beef, soy, coffee, cocoa, palm oil and timber by wealthy nations is directly linked to deforestation in threatened tropical biomes, finds a study published in Nature Ecology & Evolution.

Increased global demand for agricultural and forestry commodities has led to deforestation worldwide. Prior research examined links between global supply chains and deforestation, but most studies were conducted at a regional level or only focused on specific commodities.

Keiichiro Kanemoto and Nguyen Hoang combined previously published information on forest loss and its drivers, with a global database of domestic and international trade relationships between 15,000 industry sectors from 2001 to 2015. Using these data, they quantified each country’s deforestation footprint domestically and internationally based on the population’s consumption.

The authors found that a number of countries have increased net forest gains domestically, but their deforestation footprint — primarily in tropical forests — has increased due to importing goods. They show that consumption in G7 countries — USA, UK, France, Germany, Italy, Canada and Japan — accounts for an average loss of 3.9 trees per person per year. Examining deforestation patterns for specific commodities, the authors found that cocoa consumption in Germany poses a very high risk to forests in Côte d’Ivoire and Ghana, and deforestation in coastal Tanzania is linked to Japanese demand for agricultural products. The authors also demonstrate how deforestation drivers may differ within countries: deforestation in the Central Highlands of Vietnam is mainly driven by coffee consumption in USA, Germany and Italy, whereas North Vietnam’s deforestation is largely linked to timber exports to China, South Korea and Japan.

The authors conclude that understanding the specific links between global trade and deforestation is necessary to create better regulations and science-based interventions to protect forests from disappearing.

doi: 10.1038/s41559-021-01417-z

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