http://www.fao.org/ag/agp/greenercities/en/GGCLAC/mexico_city.html
Peri-urban agriculture is practised in boroughs at middle and higher elevations of Xochimilco, Tlalpan, Milpa Alta, Magdalena Contreras, Alvaro Obregon and Cuajimalpa de Morelos, which have the lowest population densities. Plots range in size from 1 to 3 ha and are used for the production of maize, amaranth, nopal, oats, legumes, fruit and vegetables. Farms there also raise livestock such as sheep, calves, rabbits, pigs, horses and poultry.
Since 2000, Mexico City’s government has increased its support to agriculture in the Federal District, with the main objective of protecting the ecosystem services that suburban and peri-urban areas provide to the city, and to a lesser extent, to ensure a local food supply. An important step forward was the creation in 2007 of the Secretariat for Rural Development and Equity for Communities (SEDEREC), which spearheads the city’s efforts to promote food production that is free of agrochemicals and, in some cases, completely organic.
SEDEREC’s programme for agriculture and rural development aims at improving production planning, training, technology development, agro-processing and marketing. Through that, and other, programmes for rural areas, the city and Mexico’s Federal Government invested between 2007 and 2012 some US$24.6 million in horticulture, floriculture and crop and livestock production, US$37 million in the conservation and sustainable use of natural resources in primary production, and Us$1.8 million in emergency assistance to farmers affected by extreme weather events, such as drought and flooding.
In the boroughs of Tláhuac and Xochimilco, the only suburban agricultural areas with permanent water for irrigation, the overexploitation of aquifers by domestic and industrial users has led to a serious decline in water supply and quality, and to ground subsidence.
The challenge over the coming decade will be to increase the capacity for rainwater harvesting and for storage and treatment of wastewater for use in irrigation, and to rehabilitate canals and chinampas in the remaining lake area. That will require a new vision among government agencies responsible for the city’s water management. At present, there is little coordination among the agencies, which cannot, therefore, respond in an integrated way to the growing demands on the Federal District’s water resources.
https://foodtank.com/news/2015/05/ten-urban-agriculture-projects-in-mexico-city/
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