|
|
-
Recursos bibliográficos en papel y digitales -
- libros, artículos de revistas,
ponencias de eventos, etc. -
» Resultado:
10 registros
| Registro 1 de 10 |
| Autor: |
Haile, Beliyou - Signorelli, Sara - Azzarri, Carlo - Guo, Zhe |
| Título: |
A spatial analysis of land use and cover change and agricultural performance: evidence from northern Ghana |
| Fuente: |
Environment and Development Economics. v.24, n.1. Beijer Institute of Ecological Economics; Royal Swedish Academy of Sciences |
| Páginas: |
pp. 67-86 |
| Año: |
feb. 2019 |
| Resumen: |
Using remotely sensed land-cover data in 1994 and 2014, and cross-sectional survey data in 2014, this study examines the association between land use and cover change and agricultural productivity in northern Ghana. We document a significant expansion of crop land and settlements (productive use) at the expense of natural vegetation cover. Land areas converted from natural cover to productive use have higher maize yield (0.17 tons per hectare) and harvest value (1,021 Ghanaian Cedi) compared with those converted from bare soil to productive cover. Moreover, areas that were covered by shrubs or savannah in 1994 were more productive in 2014 relative to bare soils in 1994. Although our data do not allow us to establish causality, the evidence suggests the importance of past land-cover conditions in affecting current agricultural performance, especially in resource-stricken settings where conservation and restoration practices are not as common. |
| Palabras clave: |
AGRICULTURA |
USO DEL SUELO |
|
| Solicitar por: |
HEMEROTECA E + datos de Fuente |
| Registro 2 de 10 |
| Autor: |
Bragança, Arthur |
| Título: |
The effects of crop-to-beef relative prices on deforestation: evidence from the Tapajós Basin |
| Fuente: |
Environment and Development Economics. v.23, n.4. Beijer Institute of Ecological Economics; Royal Swedish Academy of Sciences |
| Páginas: |
pp. 391-412 |
| Año: |
aug. 2018 |
| Resumen: |
This paper examines the impact of changes in agricultural land use on deforestation at the local level in the Tapajós Basin in the Brazilian Amazon. It uses exogenous variation in crop-to-beef relative prices to investigate the effects of pasture-to-cropland conversion on deforestation. The findings indicate that increases in crop-to-beef relative prices increase the rate of pasture-to-cropland conversion and reduce the rate of deforestation. The magnitude of the effects implies that land conversion reduced deforestation at the local level by 5,300 square kilometers from 2002 to 2012. This reduction is the equivalent of almost 15 per cent of the total deforestation observed in the region during this period. These results are consistent with a land use model in which cattle ranching and crop cultivation have different input-intensities and there is imperfect mobility of productive factors between municipalities. This model highlights the fact that changes in relative prices affect deforestation through its effect on input prices. |
| Palabras clave: |
DEFORESTACION |
CARNE |
PRECIOS |
PRECIOS RELATIVOS |
USO DEL SUELO |
|
| Solicitar por: |
HEMEROTECA E + datos de Fuente |
| Registro 3 de 10 |
| Autor: |
Studdert, Guillermo A. - |
| Título: |
Suelo: legado social de edición limitada |
| Fuente: |
Visión Rural. año 25, n.123. INTA. Grupo Operativo de Trabajo Sudeste. Estación Experimental Agropecuaria Balcarce |
| Páginas: |
pp. 5-6 |
| Año: |
jul.-ago. 2018 |
| Resumen: |
Considerando en el título el Lema del XXVI Congreso Argentino de Ciencia del Suelo nos hacemos eco, reflexionando acerca de su importancia en el marco del que se decretara su día. Usar el suelo para producir alimentos es ineludible. Mantenerlo saludable, es imprescindible. Los que tienen la función de manejarlo y utilizarlo debemos velar por ello. Está en nuestras manos garantizar la buena salud del suelo. No obstante, también es imperioso que la sociedad que se beneficia con lo que el suelo le brinda, tome conciencia de su importancia y fragilidad y demande las acciones para su mejora, protección y conservación. |
| Palabras clave: |
AGRICULTURA |
USO DEL SUELO |
|
| Solicitar por: |
HEMEROTECA P + datos de Fuente |
| Registro 4 de 10 |
| Autor: |
Ligier, Daniel - |
| Título: |
Proyecto "Manejo Sustentable de Tierras". Recalculando alertas entre productores y técnicos |
| Fuente: |
Visión Rural. año 25, n.123. INTA. Grupo Operativo de Trabajo Sudeste. Estación Experimental Agropecuaria Balcarce |
| Páginas: |
pp. 7-10 |
| Año: |
jul.-ago. 2018 |
| Resumen: |
Durante tres jornadas de trabajo realizadas en Lobería y Balcarce, 130 participantes intercambiaron y se actualizaron en temáticas orientadas al manejo sustentable de tierras, junto a investigadores/extensionistas de la Unidad Integrada Balcarce (INTA FCA/UNMDP). Se efectuaron además visitas a 4 establecimientos de la región para observar prácticas de manejo exitosas: terrazas, canales de desagüe, canales de guardia, manejo de excedentes hídricos, cultivos de servicios, manejo del pastizal, fertilización balanceada, entre otras. Las charlas técnicas se focalizaron en aspectos de manejo de suelos, calidad de aguas, tecnologías de insumos y procesos, cambio climático, planificación de cuencas y caracterización socio-económica del área de monitores Cuenca Alta del Arroyo Malacara, correspondiente al Sitio Piloto "Sudeste Bonaerense" del Observatorio de Degradación de Tierras y Desertificación (ONDTyD). |
| Palabras clave: |
AGRICULTURA |
USO DEL SUELO |
|
| Solicitar por: |
HEMEROTECA P + datos de Fuente |
| Registro 5 de 10 |
| Autor: |
Albuquerque Sant’anna, André |
| Título: |
Land inequality and deforestation in the Brazilian Amazon |
| Fuente: |
Environment and Development Economics. v.22, n.1. Beijer Institute of Ecological Economics; Royal Swedish Academy of Sciences |
| Páginas: |
pp. 1-25 |
| Año: |
feb. 2017 |
| Resumen: |
This paper investigates the relationship between land concentration and deforestation in the Brazilian Amazon. It develops a conceptual framework in which an individual may have three alternatives: to be a farmer in an already established place, to be a rural worker, or to migrate to the agricultural frontier in order to deforest. This model implies that land inequality affects deforestation positively. Based on data from municipalities with positive deforestation from 2002 to 2011, a model has been estimated to test this theoretical prediction. By making use of an instrumental variable, results show that there is statistical evidence to support the existence of a direct relationship between land inequality and deforestation. Results are stronger for the period 2002-2005. This might be due to command and control policies which have significantly increased the cost of clearing land since the mid-2000s. |
| Palabras clave: |
DEFORESTACION |
ZONAS RURALES |
USO DEL SUELO |
|
| Solicitar por: |
HEMEROTECA E + datos de Fuente |
>> Nueva
búsqueda
<<
Inicio
|
