What the science tells us about the benefits of agroecological practices

This research paper synthesises evidence from numerous meta-analyses and reviews to demonstrate that agroecological practices support climate resilience by improving crop yields, enhancing biodiversity, and reducing reliance on synthetic inputs. It highlights significant economic benefits, such as increased profitability through diversification, and substantial environmental gains, including carbon sequestration and reduced greenhouse gas emissions. The paper also links the reduction of pesticide use to lower public health costs and emphasizes that the most effective results come from implementing multiple, context-specific agroecological practices.

• Agroecological practices can increase crop yields while reducing reliance on synthetic fertilisers and pesticides. For instance, a global review found that legume rotation increased yields for rice, wheat, and maize by an average of 20% compared to non-legume systems, and intercropping in China resulted in grain yields 22% higher than monoculture systems.
• Reducing synthetic fertiliser use through agroecology helps lower greenhouse gas emissions, as these fertilisers are fossil-fuel intensive to produce and emit nitrous oxide upon application. Conventional agriculture often applies nitrogen and phosphorus at levels 60% and 48% higher than what major crops can utilize, respectively.
• Diversified farming systems are more profitable for farmers than conventional monocultures in both high- and low-income countries, even when accounting for higher labour costs. In global rice production, diversification is estimated to increase biodiversity by 40%, improve incomes and profits by 26%, and reduce crop damage by 31%.
• Agroecological practices enhance critical ecosystem services and biodiversity, which increases resilience to climate disasters. These include improved pollination, pest control, and soil fertility. A collapse in pollinators, which agroecology helps prevent, could cost 1-2% of global GDP in the short term given that pollination services are valued at approximately USD 1 trillion.
• The adoption of agroecological principles reduces health burdens and costs associated with pesticide exposure, which is linked to cancer, respiratory disorders, and mental illnesses like depression. In 2010, the annual health costs of organophosphate pesticide exposure were estimated at USD 121 billion in Europe and USD 42 billion in the US.
• Agroforestry and soil carbon sequestration practices contribute significantly to climate mitigation and Nationally Determined Contributions (NDCs). Agroforestry can sequester 0.12 to 0.31 Gt C per year. Additionally, increasing soil organic carbon in degraded croplands could offset fossil fuel emissions by 0.4-1.2 Gt C per year, representing up to 3% of current global fossil fuel emissions.
• The effectiveness of agroecological practices is highly context-specific, requiring tailoring to specific farms, ecosystems, or regions. Furthermore, the adoption of multiple concurrent practices typically yields greater benefits than any single practice, and these positive outcomes often increase over time.

APA

Team, Z. (2024). What the science tells us about the benefits of agroecological practices. Zero Carbon Analytics. https://zerocarbon-analytics.org/nature/agroecological-practices-support-climate-change-resilience/

Chicago

Team, ZCA. What the science tells us about the benefits of agroecological practices. Zero Carbon Analytics, 2024. https://zerocarbon-analytics.org/nature/agroecological-practices-support-climate-change-resilience/.

Wikipedia

{{cite report |last1=Team |first1=ZCA |title=What the science tells us about the benefits of agroecological practices |publisher=Zero Carbon Analytics |date=12 July 2024 |url=https://zerocarbon-analytics.org/nature/agroecological-practices-support-climate-change-resilience/ |access-date=17 August 2026 |via=Climate Insights Directory}}

BibTeX

@techreport{team2024what, author = {Team, ZCA}, title = {{What the science tells us about the benefits of agroecological practices}}, institution = {Zero Carbon Analytics}, year = {2024}, month = jul, url = {https://zerocarbon-analytics.org/nature/agroecological-practices-support-climate-change-resilience/}, urldate = {2026-08-17}, note = {Indexed by Climate Insights Directory} }