General
Rehabilitación de areas degradadas en la Amazonia peruana: Revisión de experiencias y lecciones aprendidas (Rehabilitation of degraded areas in the Peruvian Amazon: Revision of experiences and lessons learned)EspañolAntecedentesOpen access copy available |
Sesbania sesban improved fallows in eastern Zambia: Their inception, development and farmer enthusiasmBackgroundIn eastern Zambia, nitrogen deficiency is a major limiting factor for increased food production. Soil fertility has been declining because of nearly continuous maize (Zea mays) cultivation with little or no nutrient inputs. The use of short-duration tree fallows was one of several agroforestry options hypothesized to restore soil fertility. This study reports on long-term trials with Sesbania sesban in field station and farm trials. Open access copy available |
Mixed-Species Plantings in Regreening the Bare Hills: Tropical Reforestation in the Asia-Pacific RegionbackgroundThis 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. Available with subscription or purchase |
Paying for Biodiversity Conservation Services in Agricultural LandscapesbackgroundThis document describes the genesis for the World Bank GEF project from 2002-2007 to implement payments for ecosystem services for silvo-pastoral systems in Colombia, Nicaragua, and Costa Rica. The payments were designed to compensate for biodiversity services: international donor money would be exchanged for the international environmental service of biodiversity. Open access copy available |
Management of sedimentation in tropical watershedsBackgroundThe sedimentation of reservoirs is a serious problem throughout the tropics, yet most attempts to control sedimentation in large river basins have not been very successful. Reliable information on erosion rates and sources of sediments has been lacking. This paper discusses some of the limitations in estimating erosion and sedimentation and encourages development of specific sediment budgets in order to extrapolate equations and generate management procedures. Available with subscription or purchase |
Hydrological Functions of Tropical Forests: Not Seeing the Soil for the trees?backgroundThis literature review provides a summary of hydrological functions in tropical forests and includes differences in the hydrology of disturbed areas, secondary forests, and mature forests. Available with subscription or purchase |
Taungya in the PhilippinesbackgroundThis book chapter provides a description of the ecological effects of deforestation in the Philippines and a history of the failed social forestry programs that began in the 1970s. Open access copy available |
One Century of Forest Rehabilitation in the Philippines: Approaches, Outcomes, and LessonsbackgroundThis chapter provides a review of reforestation efforts in the Philippines, beginning with small-scale forest rehabilitation efforts since 1910. Reforestation was traditionally implemented by government and private companies. Since the mid-1970s, international funders have driven these efforts. Open access copy available |
Effect of Vegetation Restoration on Soil and Water Erosion and Nutrient Losses of a Severely Eroded Clayey Plinthudult in Southeastern ChinaBackgroundIn this study, researchers compare erosion from reforested and degraded sites in subtropical southeastern China. Goals & MethodsThe objective of the study was to estimate the long-term influences of reforestation on soil and water erosion and nutrient losses in regions of southeast China that are characterized by severely eroded bare land derived from Quaternary red clay. The study examined surface runoff, soil erosion, and soil nutrient content. Available with subscription or purchase |
Deforestation and Reforestation of Latin America and the Caribbean (2001–2010)backgroundThis study examines contrasting forest cover change dynamics in Latin America and the Caribbean using MODIS satellite imagery. Many studies have documented deforestation, while others report forest recovery. This study seeks to analyze these trends on a large scale and connect them to environmental and population variables. Available with subscription or purchase |
