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Mixed-Species Plantings in Regreening the Bare Hills: Tropical Reforestation in the Asia-Pacific Region

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This chapter reviews the use of mixed plantations for the goal of reforestation. Mixed plantantions are a more efficient use of resources, pest resistance, and economic and ecological resilience. When establishing a new tropical reforestation program, if unaware of site conditions (and what species to choose), mixed plantations can provide greater insurance. Mixed plantations are more expensive to establish but may provide insurance against volatile markets.

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Impacts of Native Trees on Tropical Soils: A Study in the Atlantic Lowlands of Costa Rica

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This article describes the results of a study in Costa Rica that compared the soil fertility in a 2.5 year-old plantation of 6 native tree species, grass pasture, and 20 year-old secondary forest.

Research Goals & Methods

Soil extractable Ca, Mg, K, P, Fe, Mn, Cu and Zn, the pH, exchangeable acidity, organic matter and total N were measured in three plots.

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