There are lots of ecological reasons to buy local food, from reducing the carbon footprint of the meals you eat to preventing agribusiness' destruction of unique ecosystems like the Amazon rainforest.
But research published by Proceedings of the National Academy of Sciences Monday uncovered another surprising benefit to local agriculture: it is also better for the environment of countries that currently import lots of food.
This is because, when local crops are displaced by cheaper imports, farmland is then drafted into service growing less sustainable crops, with environmental consequences for the importing country.
The study pointed out that its findings go against conventional wisdom, which held that importing countries benefited from global food trade at the ecological expense of exporting countries.
"What is obvious is not always the whole truth," study author and Michigan State University (MSU) Center for Systems Integration and Sustainability Director Jianguo "Jack" Liu said in an MSU press release. "Unless a world is examined in a systemic, holistic way, environmental costs will be overlooked," she said.
To undertake that systemic examination, the study's authors looked at the international soybean trade.
As the Yale School of Forestry and Environmental Studies explained, Brazil is the world's second-largest producer of soybeans, and its efforts to clear land for that production is a "major driver of deforestation in the Amazon basin."
But the study found that the trade also hurt countries like China, which is the world's largest soybean importer.
As China imported more and more soybeans, local farmers could no longer compete and converted their fields to crops like corn and rice, which require more nutrients to grow and therefore result in an increase in Nitrogen pollution.
The study looked specifically at the highest-producing agricultural land in China, in the country's northeast, and found that the greatest increases in Nitrogen pollution there came from fields that had flipped from soy to rice, followed by fields that had flipped from soy to corn.
Researchers further examined 160 cases on six continents and found Nitrogen levels went up when fields in importing countries switched from soy to other, more demanding crops like wheat, vegetables, corn or rice.
The study's abstract concluded with a call for more research into the environmental consequences of international trade agreements for importing countries,
According to the MSU press release, another potential area of study would be fields in Mexico and South America that have switched from corn to more nutrient-demanding vegetables due to an influx in cheap corn from the U.S. The release noted that changes in crops can also put increased pressure on local water supplies.
"This study underscores the need to pay attention to both sides of international trade not rely on conventional wisdom," Liu said in the MSU press release.
People across New England witnessed a dramatic celestial event Sunday night.
EcoWatch Daily Newsletter
By David Reichmuth
Over the last month, I've seen a number of opinion articles attacking electric vehicles (EVs). Sadly, this comes as no surprise: now that the Biden administration is introducing federal policies to accelerate the roll out of electric vehicles, we were bound to see a reaction from those that oppose reducing climate changing emissions and petroleum use.
The majority of EVs sold in 2020 were models with a starting price (Manufacturers Suggested Retail Price) under $40,000 and only a fifth of models had a starting price over $60,000.
On Friday, China set out an economic blueprint for the next five years, which was expected to substantiate the goal set out last fall by President Xi Jinping for the country to reach net-zero emissions before 2060 and hit peak emissions by 2030.
The Great Trail in Canada is recognized as the world's longest recreational trail for hiking, biking, and cross-country skiing. Created by the Trans Canada Trail (TCT) and various partners, The Great Trail consists of a series of smaller, interconnected routes that stretch from St. John's to Vancouver and even into the Yukon and Northwest Territories. It took nearly 25 years to connect the 27,000 kilometers of greenway in ways that were safe and accessible to hikers. Now, thanks to a new partnership with the Canadian Paralympic Committee and AccessNow, the TCT is increasing accessibility throughout The Great Trail for people with disabilities.
Trans Canada Trail and AccessNow partnership for AccessOutdoors / Trails for All project. Mapping day at Stanley Park Seawall in Vancouver, British Columbia with Richard Peter. Alexa Fernando<p>This partnership also comes at a time when access to outdoor recreation is more important to Canadian citizens than ever. <a href="https://www150.statcan.gc.ca/n1/daily-quotidien/200527/dq200527b-eng.htm" target="_blank" rel="noopener noreferrer">Studies from the spring of 2020</a> indicate that Canadian's <a href="https://www.bnnbloomberg.ca/moneytalk-mental-health-during-covid-19-1.1567633" target="_blank" rel="noopener noreferrer">mental health has worsened</a> since the onset of social distancing protocols due to COVID-19. </p><p>The <a href="https://www.mayoclinic.org/diseases-conditions/coronavirus/in-depth/safe-activities-during-covid19/art-20489385" target="_blank" rel="noopener noreferrer">Mayo Clinic</a> lists hiking, biking, and skiing as safe activities during COVID-19. Their website explains, "When you're outside, fresh air is constantly moving, dispersing these droplets. So you're less likely to breathe in enough of the respiratory droplets containing the virus that causes COVID-19 to become infected."</p><p>TCT leadership took this into consideration when embarking on the accessibility project. McMahon explains that there has never been a more important time to bring accessibility to the great outdoors: "Canadians have told us that during these difficult times, they value access to natural spaces to stay active, take care of their mental health, and socially connect with others while respecting physical distancing and public health directives. This partnership is incredibly important especially now as trails have become a lifeline for Canadians."</p><p>Together, these organizations are paving the way for better physical and mental health among all Canadians. To learn more about the TCT's mission and initiatives, check out their <a href="https://thegreattrail.ca/stories/" target="_blank">trail stories</a> and <a href="https://thegreattrail.ca/wp-content/uploads/2021/01/TCT_2020-Donor-Impact-Report_EN_8.5x14-web.pdf" target="_blank">2020 Impact Report</a>.</p>