Pinus tecunumanii
Amelioration of degraded rain forest soils by plantations of native treesbackgroundWhile much has been studied about the ability of tree growth to improve degraded soils in temperate zones, less is known about the impacts of tree growth on degraded soils in tropical zones. research goals & methodsThis study looks at the effects of trees planted in abandoned pasture land in northeastern Costa Rica, 25 years after that land had been cleared of rainforest. The soil was sampled before tree planting and 4 years after the trees became established. Available with subscription or purchase |
Early Growth of Native and Exotic Trees Planted on Degraded Tropical PasturebackgroundThis study describes the potential of two exotic and five native tree species to restore degraded land in Costa Rica. Research Goals & MethodsThirty blocks were established over 25 hectares of abandoned cattle pasture and tree height was measured at 3 and 7 years and tree survival was measured after 7 years. Available with subscription or purchase |
Forestry Project for the Basin of the Chinchiná River, an Environmental and Productive Alternative for the City and the RegionBackgroundOver the last century, Andean watershed within Colombia has faced threats of uncontrolled deforestation, which have been driven by a rapid expansion of agriculture and cattle grazing. It is imperative that these trends be halted and reversed, thus the FAO proposes the reforestation of watersheds, which will improve the regulation of hydaulic flows to populations living in and downstream from river basins. This project planning document describes one of these programs, PROCUENCA-FAO, which began in 2001 and focuses on the Chinchiná River watershed. Open access copy available |
Native Species: A Resource for the Diversification of Forestry Production in the Lowland Humid TropicsbackgroundThis research evaluates the success of native species for reforestation plantings in Costa Rica in comparison with exotic species. Research Goals & MethodsAt La Selva Biological Station, 80 species were planted in mixed stands of 8-12 species between 1987 and 1990. Growth characteristics and form for timber quality were collected for each species at 3 and 6 years after planting. Available with subscription or purchase |
Growth of native forest species planted on abandoned pasture land in Costa RicaBackgroundReforestation programs in Costa Rica have largely utilized only four tree species. This study tests growth rates and form of eleven additional tree species native to the humid tropics, including five N-fixing species and six non-N-fixing species. Available with subscription or purchase |
Early Species Selection for Tropical Reforestation: A Consideration of StabilitybackgroundThis study describes a screening of timber species planted in abandoned pasture sites to understand the effect of different site conditions on tree growth and to determine the species that grew with the highest variation. Research Goals & MethodsThe author looks at genotype environment to evaluate stability of genotypes and genotypes with the ability to perform consistently in multiple site conditions. Available with subscription or purchase |
