Abstract
Agroforestry systems (AFS) derived from the cactus forest “chichipera” and cultivated with “milpa”, the traditional multi-crop system of maize-beans-squash were studied in the Tehuacan Valley, Mexico. Plant management types practiced by people, role of agricultural and forest resources in households’ subsistence, and consequences of changes in AFS were investigated through ethnobotanical, ecological, and economic approaches. People maintain in this AFS 122 plant species that provide useful products for 14 different purposes. Nearly 90% of useful plants are native to the region, representing 54% of all plant species recorded in the chichipera forest. Management strategies were identified occurring on 63 species at landscape, parcel, and individual plant levels. About 67% of managed plant species are left standing during clearance of vegetation; 35% are transplanted to the parcels’ surrounding area, 32% receive particular protection, and 10 species from other areas are cultivated inside the fields. During years of higher rainfall (~745 mm) AFS supply nearly 75% of the maize grain and 50% of the maize straw used as fodder by households. AFS with intermediate vegetation cover have higher economic value than monocultures and forest. However, plots with low forest cover and monocultures are progressively more common as consequence of socio-cultural processes. Local traditional ecological knowledge and management techniques are crucial for managing resilience of these AFS.
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