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Participatory plant breeding, community-based seed banks and agroecology practices

China Mountain regions in Yunnan and Guangxi Provinces

Mountain farmers are employing community-based seed banks, participatory plant breeding, and agroecology practices informed by traditional knowledge to counter risks of increased food insecurity, climate change impacts, and unsustainable industrial farming practices.

Farmers in the Yunnan and Guangxi Provinces have seen changes to typical rainfall patterns causing more severe and prolonged periods of drought, often followed by more intense flooding. These climate change impacts have compounded the challenges farmers already faced due to increased deforestation and land degradation from unsustainable agricultural practices such as the expansion of industrial monoculture farming. In response, local farmers have partnered with the Farmers’ Seed Network of China and scientists from the Chinese Academy of Sciences to conserve and recover traditional seeds and indigenous crop varieties through participatory plant breeding, seed banks, and the incorporation of indigenous knowledge to improve farmers’ old seed varieties to better withstand drought and pest infestations. These efforts also helped respond to a significant loss of local food crop varieties in years prior to the intervention. More precisely, communities in the area reported having lost 50 local food crop varieties before the project began. In addition, 18 villages managing a total of 337 hectares of land have driven the uptake of agroecology practices that help restore biodiversity on farms, naturally control pests, and better conserve water and soil. More specifically, such practices, based on value systems and traditional diversified farming practices of the regions’ Indigenous Peoples, include shifting farming, reviving intercropping, combining crop production with duck and fish cultivation, and reintroducing trees that promote healthy soils. Beyond agroecology interventions, reforestation and the return to traditional forest management on the mountain landscapes surrounding the farms support more sustainable water and soil management. All efforts employed are reportedly rooted in participatory methods and engagement with indigenous communities, ensuring traditional knowledge centrally informs plant breeding, implemented agroecology practices, and improved management of the surrounding landscapes including forests, mountains, and freshwater sources such as rivers, lakes, and ponds. The initiative also focused on providing farmers with greater access to markets. Collective agreements and actions have been fostered within and between the communities involved to take advantage of this improved market access. These collectives, by nature of the sustainable practices employed, have gained a strong reputation in niche high-value markets that value environmentally friendly products.

Case effectiveness on

Climate change

Mitigation: Positive

Although not quantified, the many efforts employed to plant more trees on farms and the surrounding mountainous landscape combined with adopted agroecology practices have reportedly improved the soil carbon sequestration potential of the landscape.

Adaptation: Positive

Increased diversity, local control of, and access to seeds will likely improve the ability of communities to recover in the case of extreme weather events. The reforestation and re-introduction of traditional land management practices will likely reduce vulnerability to droughts and landslide risks in the case of flooding. Agroecology and improved forest management practices informed by traditional methods have been found to reduce water use and pollution.

Ecosystem health

Ecological effect: Positive

Agrobiodiversity has reportedly increased, evidenced by a greater maintained diversity of local crops and seeds on the agricultural lands. In the Yunnan province alone, the established community seed banks report conserving over 200 varieties of seed. Additionally, the reduced reliance on pesticide and fertilizer use has reportedly improved soil quality and reduced harmful effects to insects and animals critical to the various agroecology practices employed and ecosystem functioning overall.

Socioeconomic outcomes

The interventions employed have been found to increase income for farmers through a measured 15-20% increase in productivity of staple food crops and new or improved seed varieties. Intercropping has led to reported higher yields of fish, ducks, and tree nuts, diversifying income sources for villagers. Compared to other villages in the same province, farmers now relying on indigenous food resources have reported greater food self-sufficiency. Taking into account the fact that mountain communities are often isolated, such self-sufficiency is likely all the more important. Farmers have reportedly also been able to financially benefit from their efforts through greater access to markets.

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Close up of seeds
Targets poor/disadvantaged

Ecosystem type

  • Montane/Alpine
  • Terrestrial production

Climate change impacts addressed

  • Loss of food production
  • Drought
  • Freshwater flooding
  • Mudslides / Landslides
  • Increased pests
  • Reduced soil quality


  • International conservation/environment organization
  • National development organisation
  • Research institutions

Societal challenges

  • Biodiversity conservation
  • Climate change adaptation
  • Climate change mitigation
  • Disaster risk reduction
  • Economic and Social development
  • Rights/empowerment/equality
  • Food security

Literature info

  • Grey literature
Case methodology not reported