Innovative Agroecology: Community Seed Banks in China's Mountains

This case study documents a high-signal, expert-driven initiative in the mountain regions of Yunnan and Guangxi Provinces, China, where local farmers have successfully integrated participatory plant breeding (PPB), community-based seed banks, and agroecology practices to address food insecurity and climate change. Partnering with the Farmers’ Seed Network of China and scientists from the Chinese Academy of Sciences, the project focuses on conserving and recovering traditional seeds and indigenous crop varieties. The core methodology involves a collaborative breeding process where farmers and researchers work together to select crop varieties that are scientifically robust and practically suited to local conditions. Specifically, the project aims to improve old seed varieties to better withstand drought and pest infestations, directly addressing the user's need for methods to select for resilience in open-pollinated varieties. The initiative spans 18 villages managing 337 hectares of land, driving the uptake of specific agroecology practices such as shifting farming, reviving intercropping, combining crop production with duck and fish cultivation, and reintroducing trees to promote healthy soils. These practices are informed by the traditional diversified farming practices of the region's Indigenous Peoples. Beyond field interventions, the project includes reforestation and the return to traditional forest management to support sustainable water and soil management. The results are documented with measurable outcomes: a 15-20% increase in productivity of staple food crops and the development of new or improved seed varieties. This case study provides a concrete example of heritage variety adaptation to local climate shifts within a regenerative context, offering specific protocols for intercropping, integrated animal cultivation, and soil restoration that align with permaculture principles.