Consuming foods grown in urban gardens may offer a variety of health benefits, but a lack of knowledge about the soil used for planting could pose a health threat for both consumers and gardeners. In a new study from the Johns Hopkins Center for a Livable Future (CLF), researchers identified a range of factors and challenges related to the perceived risk of soil contamination among urban community gardeners and found a need for clear and concise information on how best to prevent and manage soil contamination. The results are featured online in PLOS ONE.
“While the benefits are far-reaching, gardening in urban settings can also create opportunities for exposure to contaminants such as heavy metals, petroleum products, and asbestos, which may be present in urban soils,” said Keeve Nachman, PhD, senior author of the study and director of the Food Production and Public Health Program with CLF.
“Our study suggests gardeners generally recognize the importance of knowing a garden site’s prior uses, but they may lack the information and expertise to determine accurately the prior use of their garden site and potential contaminants in the soil. They may also have misperceptions or gaps in knowledge about how best to minimize their risk of exposure to contaminants that may be in urban soil.
According to CLF researchers, urban soils are often close to pollution sources, such as industrial areas and heavily trafficked roads. As a result, many soil contaminants have been found at higher concentrations in urban centers.
To characterize urban community gardeners’ knowledge and perceptions of soil contamination risks and reducing exposure, researchers conducted surveys among urban community gardeners and semi-structured interviews with key informants in the gardening community in Baltimore, Maryland. Informants included individuals whose job function or organizational affiliation makes them knowledgeable about Baltimore City community gardening and soil contamination.
“People may come into contact with these contaminants if they work or play in contaminated soil, or eat food that was grown in it. In some cases, exposure to soil contaminants can increase disease risks, especially for young children,” said Brent Kim, MHS, lead author of the paper and a program officer with CLF. “Given the health, social, environmental and economic benefits associated with participating in and supporting urban green spaces, it is critical to protect the viability of urban community gardens while also ensuring a safe gardening environment.”
For more information, including resources for urban farmers and gardeners, please visit the Center for a Livable Future’s Urban Soil Safety page.
“Urban Community Gardeners’ Knowledge and Perceptions of Soil Contaminant Risks” was written by, Brent Kim, Melissa Poulsen, Jared Margulies, Katie Dix, Anne Palmer and Keeve Nachman.
The research was funded in part by Johns Hopkins Urban Health Institute and the GRACE Communications Foundation. The research was conducted in partnership with the Community Greening Resource Network.
Natalie Wood-Wright | newswise
Trees and climate change: Faster growth, lighter wood
14.08.2018 | Technische Universität München
Animals and fungi enhance the performance of forests
01.08.2018 | Deutsches Zentrum für integrative Biodiversitätsforschung (iDiv) Halle-Jena-Leipzig
There are currently great hopes for solid-state batteries. They contain no liquid parts that could leak or catch fire. For this reason, they do not require cooling and are considered to be much safer, more reliable, and longer lasting than traditional lithium-ion batteries. Jülich scientists have now introduced a new concept that allows currents up to ten times greater during charging and discharging than previously described in the literature. The improvement was achieved by a “clever” choice of materials with a focus on consistently good compatibility. All components were made from phosphate compounds, which are well matched both chemically and mechanically.
The low current is considered one of the biggest hurdles in the development of solid-state batteries. It is the reason why the batteries take a relatively long...
New design tool automatically creates nanostructure 3D-print templates for user-given colors
Scientists present work at prestigious SIGGRAPH conference
Most of the objects we see are colored by pigments, but using pigments has disadvantages: such colors can fade, industrial pigments are often toxic, and...
Scientists at the University of California, Los Angeles present new research on a curious cosmic phenomenon known as "whistlers" -- very low frequency packets...
Scientists develop first tool to use machine learning methods to compute flow around interactively designable 3D objects. Tool will be presented at this year’s prestigious SIGGRAPH conference.
When engineers or designers want to test the aerodynamic properties of the newly designed shape of a car, airplane, or other object, they would normally model...
Researchers from TU Graz and their industry partners have unveiled a world first: the prototype of a robot-controlled, high-speed combined charging system (CCS) for electric vehicles that enables series charging of cars in various parking positions.
Global demand for electric vehicles is forecast to rise sharply: by 2025, the number of new vehicle registrations is expected to reach 25 million per year....
17.08.2018 | Event News
08.08.2018 | Event News
27.07.2018 | Event News
21.08.2018 | Ecology, The Environment and Conservation
21.08.2018 | Life Sciences
21.08.2018 | Power and Electrical Engineering