Swedes putting carbon emissions on food items瑞典人把碳排放量的食物.ppt

Swedes putting carbon emissions on food items瑞典人把碳排放量的食物
Organic Agriculture
Capture atmospheric carbon dioxide and stores it in the soil, due to the building of soil organic matter
23 year experiment, Rodale Institute Farming Systems Trial, has shown an increase in soil carbon of 15-28%, while the conventional system has shown no statistically significant increase
rodaleinstitute.org/ob_31
GHG by meat
Beef: 78%
Pork: 14%
Chicken: 8%
Roughly half of the GHG emissions due to human diets come from meat even though beef, pork and chicken together account for only about 14 percent of what people eat.
substituting all beef production for chicken would cut meat’s projected carbon footprint by 70 percent
Grassfed Beef
Animals are not finished on grain, but continue to consume grass
Animals do not receive hormones, growth promoting additives, or antibiotics
less total fat, saturated fat, cholesterol, and calories
Better for the Environment?
Recent study states: “We do see significant differences in the GHG intensities [of grass vs grain finishing]. It’s roughly on the order of 50 percent higher in grass-finished systems.”
“It’s related to the much higher volumes of feed throughput and associated methane and nitrous-oxide [GHG] emissions.” He added that most pastures were highly managed, and subject to “periodic renovations and also fertilization.” Finally, with grass-fed cattle “there is also a high [grass] trampling rate. So the actual land area that you need to maintain magnifies that [GHG] difference,” Pelletier said.
Swedes putting carbon emissions on food items
They recommend that Swedes favor carrots over cucumbers and tomatoes, for example. (Unlike carrots, the latter two must be grown in heated greenhouses here, consuming energy.)
They are not counseled to eat more fish, despite the health benefits, because Europe’s stocks are depleted.
Sweden could cut its emissions from food production by 20 to 50 percent.
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