Better way to predict the environmental impacts of agricultural production

Consumer goods companies often rely on life-cycle assessments (LCA) to figure out the potential consequences of how they design products and source ingredients. This kind of assessment, while sophisticated, often lacks detail about how the products affect natural resources such as land, waterClimate change is expected to exacerbate current stresses on water resources from population growth and economic and land-use change, including urbanisation. On a regional scale, mountain snow pack, glaciers and small ice caps play a crucial role in freshwater availability. Widespread mass ... and biodiversityThe total diversity of all organisms and ecosystems at various spatial scales (from genes to entire biomes). (IPCC).

A team of researchers from Stanford University and the University of Minnesota, in a partnership called the Natural CapitalNatural capital includes access to land, forests, water, grazing, fishing, wild products and biodiversity. ProjectProject is an intervention designed to achieve specific objectives within specified resources and implementation schedules, often within the framework of a broader program. (Glossary Monitoring and Evaluation Terms; MERG Monitoring & Evaluation Reference Group and UNAIDS), along with researchers from Unilever’s Safety and Environmental Assurance Centre, developed a new kind of assessment to integrate these impacts in a more detailed way. They call it Land Use Change Improved Life Cycle Assessment, or LUCI-LCA. It’s designed to help researchers or companies more accurately predict impacts of new designs and sourcing.

The researchers tested this new LCA by evaluating the potential environmental impacts of two bio-plastic products that could be produced from sugarcane grown in Mato Grosso, Brazil, or from corn grown in Iowa. Their approach — which includes more accurate data about the regional land composition than the traditional LCA — came to different conclusions about which option would be more environmentally responsible. The group published the results in the April 21 issue of Nature Communications.

“The size and reach of multinational companies is stunning, on par with that of many nations,” said Gretchen Daily, professor of biology at Stanford and senior author of the paper. “When we think about how to bring human activities into balance with what Earth can sustain, corporations have a major role to play in decoupling economic growthIdeally, economic growth is decoupled from energy consumption. This can be achieved through different measures, one of them being energy efficiency or a shift towards less energy intensive sectors, such as services. from environmental impact.”

Improving impact assessment

Life-cycle assessment offers a systematic way of determining potential environmental impacts of a product from source materials to disposal. Results from these assessments often inform decisions companies make about product design, material and technology choices and sourcing strategies. An incomplete or inaccurate assessment could lead to well intentioned but environmentally damaging decisions.

One problem with a standard life cycle assessment is that it represents the average land composition of the country from which materials will be sourced. So, in this case, it assumes that Mato Grosso contains the same proportion of rainforest as all of Brazil, and that sourcing sugarcane from that state would lead to deforestation of the Amazon. Daily and her colleagues made improvements that allow for more refined assessment using data relevant to the exact regions from which materials would likely be sourced, taking into account predictions about future impacts to the environment.

“In reality, from the modeling that we did, it looked like most of the expansion of agricultureCultivation of the ground and harvesting of crops and handling of livestock, the primary function is the provision of food and feed. in Mato Grosso would happen in the savannah,” said Rebecca Chaplin-Kramer, research associate at the Stanford Woods Institute for the Environment and lead author of the study. “Whereas in Iowa, if any expansion happens, it will likely mean expanding into forest.”

While the standard LCA showed that the Mato Grosso sugarcane would lead to more CO2Carbon dioxide (CO2) is emitted in several ways. Naturally through the carbon cycle and through human activities like the burning of fossil fuels. These human activities have increased CO2 concentrations in the atmosphere since the beginning of the industrial revolution and these high ... in the atmosphere, this more spatially sensitive LCA found that the carbon footprintGreenhouse gas accounting describes the way to inventory and audit greenhouse gas (GHG) emissions. A corporate or organisational greenhouse gas (GHG) emissions assessment quantifies the total greenhouse gases produced directly and indirectly from a business or organisation’s activities. ... of the Iowan corn was larger. In addition, while the traditional LCA found that the corn would result in more water use than the sugarcane, the new LCA found that the sugarcane would use more — 900 percent more.

“This work has major implications for anybody involved in product innovation, commodity sourcing or policy setting for new land development,” said Ryan Noe, a researcher with the National CapitalWealth in the form of money or other assets owned by a person or organization or available for a purpose such as starting a company or investing. Project at University of Minnesota and co-author of the paper. “Where that sourcing comes from matters and it’s not really being captured with the approachesCore to livelihoods approaches are a set of principles that underpin best practice in any development intervention: *People-centred *Responsive and participatory *Multi-level *Conducted in partnership * Sustainable *Dynamic being used.”

Careful consumption

The researchers hope that the stark and significant differences between the results of the two LCAs will encourage companies and policymakers to adopt the new approach for decision-making.

“Our ultimate mission is to get this kind of information — this spatially explicit value of nature — to people and to have the impact on natural capital included in as many different kinds of decisions as possible,” Chaplin-Kramer said.

It took the team substantial time and effort to pull together the data necessary for this case study. But with increased interest, they believe they could develop a more streamlined tool that would require little manual work.

“There’s more work at some levels — but this is exactly the kind of 21st-century work that responsible corporations are pursuing to promote green growthGreen growth means promoting economic growth while reducing pollution and greenhouse gas emissions, minimising waste and inefficient use of natural resources, and maintaining biodiversity. Green growth means improving health prospects for populations and strengthening energy security through ... and a sustainable human enterprise,” Daily said. “In the short run, this approach will reduce costsCost: The consumption of resources such as labour time, capital, materials, fuels, etc. as the consequence of an action. In economics, all resources are valued at their opportunity cost, which is the value of the most valuable alternative use of the resources. Costs are defi ned in a variety of ... and risks. In the long run, it is utterly key to survival.”

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Materials provided by Stanford University. Original written by Taylor Kubota. Note: Content may be edited for style and length.

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