Why Urban Farming Is Key in the Fight Against Hunger and Climate Change
Author: Lorraine Chow | Published: January 14, 2018
The urban farms sprouting up and across cities around the world aren’t just feeding mouths—they are “critical to survival” and a “necessary adaptation” for developing regions and a changing climate, according to a new study.
Urban farms—which include plain old allotments, indoor vertical farms and rooftop gardens nestled amongst busy streets and skyscrapers—have become increasingly popular and important as the world’s population grows and more and more people move to cities.
The United Nations predicts that by 2030, two-thirds of the world’s population will be living in cities, with the urban population in developing countries doubling. That’s a lot of mouths to feed.
The new paper, published in the journal Earth’s Future and led by the Arizona State University and Google, finds that this expected urban population boom will benefit from urban farming in multiple ways.
Urban Farmer Transforms Community Into Thriving Local Food Haven https://t.co/oj7J048THf @urbangardens @UrbanFarmMag
— EcoWatch (@EcoWatch) April 12, 2017
As the Thomson Reuters Foundation explained from the study, “Urban farms could supply almost the entire recommended consumption of vegetables for city dwellers, while cutting food waste and reducing emissions from the transportation of agricultural products.”
According to the study, urban agriculture can help solve a host of urban environmental problems, from increasing vegetation cover (thus contributing to a decrease in the urban heat island intensity), improving the livability of cities, and providing enhanced food security to more than half of Earth’s population.
After analyzing multiple datasets in Google Earth Engine, the researchers calculated that the existing vegetation on urban farms around the world already provides some $33 billion annually in services from biocontrol, pollination, climate regulation and soil formation.
The future of urban agriculture has even more potential, the researchers found.
“We project potential annual food production of 100–180 million tonnes, energy savings ranging from 14 to 15 billion kilowatt-hours, nitrogen sequestration between 100,000 and 170,000 tonnes, and avoided stormwater runoff between 45 and 57 billion cubic meters annually,” the authors wrote.