Passar para o conteúdo principal

page search

Issuesuso da terraLandLibrary Resource
There are 9, 839 content items of different types and languages related to uso da terra on the Land Portal.

uso da terra

AGROVOC URI:

Displaying 1777 - 1788 of 4573

Land institutions and supply chain configurations as determinants of soybean planted area and yields in Brazil

Journal Articles & Books
Dezembro, 2013
Brasil

Soybean production has become a significant force for economic development in Brazil. It has also received considerable attention from environmental and social non-governmental organizations as a driver of deforestation and land consolidation. While many researchers have examined the impacts of soybean production on human and environmental landscapes, there has been little investigation into the economic and institutional context of Brazilian soybean production or the relationship between soy yields and planted area.

Global albedo change and radiative cooling from anthropogenic land-cover change, 1700 to 2005 based on MODIS, land-use harmonization, radiative kernels and reanalysis

Journal Articles & Books
Dezembro, 2014
Global

Widespread anthropogenic land-cover change over the last five centuries has influenced the global climate system through both biogeochemical and biophysical processes. Models indicate that warming from carbon emissions associated with land cover conversion have been partially offset if not outweighed by cooling from elevated albedo, but considerable uncertainty remains partly because of uncertainty in model treatments of albedo.

Land Use and Management Practices Impact on Plant Biomass Carbon and Soil Carbon Dioxide Emission

Journal Articles & Books
Dezembro, 2010

Land use and management practices may influence plant C inputs and soil CO2 emission. We evaluated the effect of a combination of irrigation, tillage, cropping system, and N fertilization on plant biomass C, soil temperature and water content at the 0- to 15-cm depth, and CO2 emission in a sandy loam soil from April to October, 2006 to 2008, in western North Dakota.

Drought vulnerability drives land-use and land cover changes in the Rift Valley dry lands of Ethiopia

Journal Articles & Books
Dezembro, 2013
Etiópia

The Ethiopian Rift Valley is a dry land zone where for a long time pastoral communities have made their living from acacia-based woodlands. But many pastoralists have changed from a pastoral way of life to mixed farming over time. The aim of this study was to evaluate land-use and land cover (LULC) changes in the Central Rift Valley dry lands of Ethiopia, and determine the role of drought vulnerability as a driver. A combination of GIS/remote sensing techniques, drought vulnerability analyses, field observation and surveying were employed.

Basing Superfund Cleanups on Future Land Uses: Promising Remedy or Dubious Nostrum?

Policy Papers & Briefs
Dezembro, 1997

Supporters of the effort to link cleanups at hazardous waste sites to the sites' expected land uses claim that amending language in the federal Superfund statute to allow this may yield a number of benefits. These include rationalizing the cleanup process and decreasing cleanup costs, promoting economic development in the local communities that host Superfund sites, and helping such communities exercise more control over the cleanups. However, interviews with Superfund stakeholders and a detailed case study call into question these arguments.

Bush encroachment under three contrasting land-use practices in a mesic South African savanna

Journal Articles & Books
Dezembro, 2009
África do Sul
África austral

This study determined the effects of land-use practice had on the rate and extent of bush encroachment in a mesic savanna in KwaZulu-Natal, South Africa. Changes in woody cover were measured for 1 km² sites in areas under communal, commercial and conservation land-use systems for the period between 1937 and 2000. Land users from each area were interviewed to gain the histories of each area and to determine how the changes in woody cover had impacted them and whether anything was being done to counteract the spread of trees and shrubs on their land.

Assessing strategic water availability using remote sensing, GIS and a spatial water budget model: case study of the Upper Ing Basin, Thailand

Journal Articles & Books
Dezembro, 2011
Tailândia

This paper assesses strategic water availability and use under different development pathways on a basin scale using remote sensing (RS), geographical information systems (GIS) and a spatial water budget model (SWBM). The SWBM was applied to the Upper Ing Basin in northern Thailand to investigate the spatial and temporal variations in the location of streams and water yields from different parts of the basin. The base simulation was carried out for the years 1998–2007 using a DEM and actual land-use data at 100-m resolution.

case study of the Czech agriculture since 1918 in a socio-metabolic perspective – From land reform through nationalisation to privatisation

Journal Articles & Books
Dezembro, 2013
Eslováquia
República Checa

This article explores the development of the social metabolism of Czech agriculture over the past 80 years and aims to describe the complex agricultural system from a biophysical perspective. As a Central European country, the Czech Republic's political system has experienced a number of turning points and changes in its history. Using the social metabolism concept and the material and energy flow method of analysis this article looks at the system from a biophysical perspective and explores the interactions between the economic system and nature.

District-scale prioritization for A/R CDM project activities in Indonesia in line with sustainable development objectives

Journal Articles & Books
Dezembro, 2008
Indonésia

The promise of the Clean Development Mechanism (CDM) to deliver its dual objectives is currently under public scrutiny. In land-use, land-use change and forestry (LULUCF) activities through afforestation and reforestation projects, known as A/R CDM, the deliverables that demonstrate sustainable development remain unclear. While the methods to convincingly demonstrate carbon benefits are fine-tuned, there is growing concern on a lack of socio-economic benefits of the projects.

Obstacles and options for the design and implementation of payment schemes for ecosystem services provided through farm trees in Saxony, Germany

Journal Articles & Books
Dezembro, 2011
Alemanha

Agricultural crops and pasturelands cover 24–38% of the global land area, and thus the ecological services that agricultural systems provide are of utmost societal importance. An important determinant of ecosystem services provision from European farmland is the amount and spatial arrangement of trees, shrubs and woodlands that are integrated into the respective land-use systems.

Land Distribution and International Agricultural Productivity

Journal Articles & Books
Dezembro, 2007

The unequal distribution of agricultural land is often cited as a source of inefficiency in agriculture. Previous cross-country studies of agricultural productivity differences, though, have not considered land inequality. This article addresses this issue by using cross-country data on inequality in operational holdings of agricultural land from Deininger and Squire (1998) . In an estimation of an agricultural production function, the Gini coefficient for land holdings is found to have a significant negative relationship with productivity.