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Landscape restauration in the Amazon: land suitability and jurisdictional governance to achieve ecologic and economics goals. [ID843]

Poccard-Chapuis R., Plassin S., Peçanha J., Laurent F., Piketty M.G., Pimentel G., Bourgoin C., Pinillos Cifuentes D.A., Osis R., Blanc L., Gomes M.O., Gond V., Betbeder J., Dessard H., Pacheco P.. 2019. Bern : Global Land Programme, 1 p.. Open Science Meeting of the Global Land Programme OSM2019. 4, 2019-04-21/2019-04-24, Bern (Suisse).

In the Amazonian “arc of deforestation”, landscapes are a result of 50 years of systematic deforestations, driven by a "race to the land", where land appropriation was the main objective of the migrants. In this context, land accumulation was a priority over land production, and even more over sustainable management of natural resources. In consequence, current landscapes include huge areas of systematic deforestation, and disconnected forest remaining patches. Both are degraded. Agronomic productivities are decreasing, due to extractive management systems. Ecosystemic services also are low, due to forest fragmentation, soil degradation and deforestation of vulnerable areas. Since 2005 - 2008, federal policies against deforestation and forest act have fixed the usable agricultural areas, and economic growth must now take place in a limited land extension. Natural resources management becomes essential, which induces changes in farming practices. In this transition, land suitability becomes a key to organize a new farming design, zoning areas dedicated to economic production, and areas for ecosystemic services. In the first ones, improved and intensified agricultural practices are developed, valorizing best soils and or topographic units. The other areas, less productive but with a high connectivity and potentiality for water cycle and soil protection, are abounded and could go back to forest regeneration. A new forest matrix is being built, as well as a new map of agricultural production. Landscape efficiency is also defined by the optimized combination of these two maps. Land suitability defines the tradeoff between economic production and ecosystemic services. This presentation explains the Paragominas experience, in Brazilian eastern amazon, to develop a landscape restoration plan, in a jurisdictional approach. In a first step, land suitability is mapped at municipal level, using topographic data, and derived information's about soils, declivity and hydrographic

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