Decomposition of the rubber tree Hevea brasiliensis litter at two depths

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Modelagem em escala regional da erosão relacionada com a evolução da cobertura do solo: Um estudo de caso no sudeste do Brasil

Accelerated soil erosion is, at present, one of the most widespread environmental problems in the world. Geographic Information Systems (GIS) have become an essential tool in soil erosion studies and consequently in the development of appropriate soil conservation strategies. The objective of this paper was to assess the degree of soil erosion associated with land cover dynamics through GIS analysis and to validate the modeling with indicators of soil erosion. Universal Soil Loss Equation (USLE) model, GIS technology and ground-truth dataset (erosion indicators) were employed to elaborate the soil loss maps for four dates at Sorocaba Municipality (SP, Brazil). It was verified that, although the predicted soil loss rate is normally small along the study area, such rate is significantly greater than the soil formation rate. This shows a non-sustainable situation of soil and land cover management. Unplanned urban expansion seems be the main driving force that acts in increasing the erosion risk/occurrence along the study area.

Políticas y economías campesinas en ecosistemas de altura: el caso Pilahuín, zona interandina, Ecuador

Incluye Bibliografía

Laboratorio de gestión urbana: plan parcial de expansión macroproyecto Ciudadela Gonzalo Vallejo Restrepo Pereira

Incluye Bibliografía

El mercado de tierras rurales en Paraguay

Incluye Bibliografía

Comportamento do mercado de terras no Brasil

Incluye Bibliografía

El mercado de tierras en México

Incluye Bibliografía

El sistema municipal y la superación de la pobreza en Colombia

Incluye Bibliografía

Gasto, inversión y financiamiento para el desarrollo sostenible en Chile

Incluye Bibliografía

Las campañas mundiales de seguridad en la tenencia de la vivienda y por una mejor gobernabilidad urbana en América Latina y el Caribe, Santiago, 25-27 octubre 2000: actas de los paneles

Incluye Bibliografía

Industria y territorio: un análisis para la provincia de Buenos Aires

Incluye Bibliografía

produção de mudas de maracujazeiro amarelo submetidas à salinidade em solo com biofertilizante bovino

The experiment was conducted in a greenhouse from May 1 to July 31, 2008, in Areia county, Paraiba State, PB, Brazil, in order to evaluate the effects of irrigation water salinity on initial growth of the passionfruit seedlings in non-saline substrate with and without bovine biofertilizer. The treatments were distributed in a completely randomized design, with three replications and twelve plants per plots, in a factorial arrangement 5 × 2 × 2, corresponding the former to the levels of salinity in the irrigation water: 0.5; 1.0; 2.0; 3.0 and 4.0 dS m-1, in soils with and without bovine biofertilizer applied at two moments (25 and 65 days after seedling emergence). The growth of the seedlings and the soil electrical conductivity were evaluated at the end of the experiment. The biofertilizer was diluted in a low saline water at a 1:1 ratio and was applied once two days before sowing, corresponding to 10% of the substrates volume. The increase in water salinity inhibited the growth in height of plants, leaf area and root length, but always to a lesser extent in the treatments with bovine biofertilizer. The increase in electrical conductivity of the irrigation water elevated the soil salinity, independently of the addition of biofertilizer.

Desarrollo rural y programación urbana de alimentos

Incluye Bibliografía

Crece y cambia la clase media en América Latina: una puesta al día

Incluye Bibliografía

Rural development and urban food programming

Includes bibliography