Back in 2020, Shiyang Li at Rare visited restaurants across China to interview over 30 different owners and staff about the attitudes, beliefs, and everyday behaviors that contribute to food waste.  Similar to global trends, food waste in China remains a significant challenge. A 2020 survey found restaurants in Chinese cities wasted at least 34 million tons of food every year, which can feed as many as 49 million people.

This blog is modified from the Wilson Center-OSU “Cultivating US and Chinese Climate Leadership on Food and Agriculture Roadmap” publication. 

“Waste is something that most of us just don’t see,” stressed Pete Pearson, Senior Director, Food Loss and Waste, WWF, at a recent Wilson Center event. Though people are “conditioned” to be blind to food waste, continued Pearson, this not-so-invisible problem wastes a third of food grown around the world. When this wasted food decomposes, it emits methane, accounting for 8 to 10% of global greenhouse gas (GHG) emissions.

For centuries, farmers around the globe have tilled the soil to prepare for planting. Traditional tilling, however, exposes the bare earth to wind and water, causing erosion and the loss of soil organic carbon, as well as lowering soil quality and crop yields. In the US Corn Belt tilling has degraded  approximately 35% of the land– about the size of Montana. In China, erosion from traditional tilling has degraded over 50% of agricultural soils. In the two countries soil erosion and loss of soil fertility is creating annual economic losses of $1.9 billion and $3.7 billion, respectively. Nevertheless, farmers are often hesitant to switch to no-till practices.

A quiet agricultural community in east, central Iowa is a surprising place to learn about the evolution of communes in the United States. While a graduate student at Iowa State University, I first visited the Amana Colonies in 1979. The brick homes, the woolen mill, and the community kitchens were first built in 1855 by a group of German immigrants, forming the now oldest commune in the country.

Days before Brazilian President da Silva Feb visited China in late March 2023, China resumed its beef imports from Brazil after a temporary ban due to an earlier discovery of Mad Cow Disease. Brazil quickly bounced back as the top exporter of beef to China, a country hungry for it. With the continuous growth of China’s economy, population, urbanization, and increasing income levels, there has been an increased demand for high-protein foods. Among these, beef has become a highly sought-after delicacy. Since 2012, China has transitioned from a net exporter to a net importer of beef, primarily relying on countries like Brazil.

China is the world’s largest emitter of methane, a short-lived climate pollutant that traps 80 times more heat than carbon. Coal mining, agriculture, and food waste are China’s three biggest methane emitters. Among them, food waste holds the most promise for near-term climate action. 

A quiet agricultural revolution is on the horizon in parts of China. Innovative anaerobic digestion techniques are revolutionizing agriculture by transforming livestock manure into organic fertilizer and clean biogas energy. As these technologies significantly lower carbon emissions, they can set a precedent for sustainable farming practices across China and the world.

China’s power sector makes up the lion’s share of the country’s greenhouse gas emissions, but rising methane emissions from rice farming and livestock, nitrous oxide emissions from fertilizers, and CO2 from food transport could all hinder China’s progress toward its 2060 carbon neutrality goal. Chinese policymakers could rein in agri-food emissions by modifying existing climate plans and policies. Climate-smart agriculture is not only a mitigation strategy, but also an adaptation strategy to intensifying extreme weather events like heatwaves and typhoons.