Mapping the Relationship of Inter-Village Variation in Agroforestry Tree Survival with Social and Ecological Characteristics: The Case of the Vi Agroforestry Project, Mara Region, Tanzania By Karl-Erik Johansson, Robert Axelsson, Ngolia Kimanzu Tagged with: Adaptation, Adoption, Agro-ecological resilience, Dissemination, Livelihood, Poverty alleviation, Sustainable development