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There are 6, 260 content items of different types and languages related to ambiente on the Land Portal.

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Rethinking the Causes of Deforestation: Lessons from Economic Models

Dezembro, 1998

Synthesizes the results of more than 140 economic models analyzing the causes of tropical deforestation. Raises significant doubts about many conventional hypotheses in the debate about deforestation. More roads, higher agricultural prices, lower wages, and a shortage of off-farm employment generally lead to more deforestation. How technical change, agricultural input prices, household income levels, and tenure security affect deforestation—if at all—is unknown.

What Role for Tropical Forests in Climate Change Mitigation? The Case of Costa Rica

Dezembro, 1998
América Latina e Caribe

Land and forestry-based activities could in principle play important roles as climate change mitigation strategies. In practice, however, several questions have been raised about their feasibility. Therefore, understanding the processes and determinants of land use changes is critical. This paper aims to contribute to such understanding in the larger part of a larger project on sustainable development and economic growth. It begins with a dynamic model of land use.

Can REDD+ save the forest? The role of payments and tenure

Dezembro, 2011

The success of REDD+ depends on whether it can be economically viable and if any resulting payments are sufficient to cover the opportunity cost plus any transaction cost. Where tenure security over forested areas is weak, REDD+ can pose a risk for forest communities, who could be dispossessed, excluded and marginalised. This review explores how payment for avoided deforestation and forest tenure impact the success of REDD+ projects in terms of effectiveness, efficiency and equity.

Deforestation and Land Use on the Evolving Frontier: An Empirical Assessment [in Nicaragua]

Dezembro, 1998
Nicarágua
América Latina e Caribe

The advance of the agricultural frontier constitutes the biggest source of deforestation in Central America today. This conversion of tropical forests into agricultural land and pasture is the direct result of individual land use decisions. This paper presents a simple analytical model of household land use, followed by an econometric analysis of household survey data from the Río San Juan region of Nicaragua in order to test for consistency with the model.

Environmental and socioeconomic impacts of Mexico's payments for ecosystem services program

Dezembro, 2013
México

This document summarizes current findings from an evaluation of Mexico’s National Payments for Hydrological Services from 2003-2010.  Th evaluation seeks to understand the environmental and socioeconomic impacts of the program, with the goal of extracting lessons learned and identifying room for possible future improvement.

Findings: an analysis of program selection criteria and the characteristics of lands enrolled suggests the program has met the dual goals of targeting funds to areas of ecological and social priority. Specifically:

Malawi: Services and policies needed to support sustainable smallholder agriculture

Dezembro, 1996
Malawi
Europa
África subsariana

Malawi’ s smallholder agriculture is facing a crisis, particularly in the more populated south. There is an insidious combination of land shortage, continuous cultivation of maize, declining soil fertility, low yields, deforestation, poverty and high population growth rate. Smallholder farmers are doing what they can to maintain household livelihoods under these difficult circumstances, however many of their actions, which are necessary for short term survival, such as the cultivation of hillsides, are not sustainable in the long term.

Poverty environment linkages: a study of use and management of forest resources in Mahabharat tract, west Nepal

Dezembro, 2003

The author explores the socio-economic dimension of forest resource use and management in the Mahabharat hill track of Arghakhanchi district in west Nepal.Analysis focuses on:various attributes of forest resources use and variation between regions, socio-economic and demographic groupslocal forest management systems and practices forest resource use and its related managementeconomic status of households focusing on the poverty-environment nexus.Major findings and conclusions from the overall study include:the extent, depth and severity of poverty is high - the incidence of poverty is foun

Debating shifting cultivation in the Eastern Himalayas: farmers’ innovations as lessons for policy

Dezembro, 2005
Nepal
Bangladesh
Índia
Butão
China
Myanmar
Ásia Meridional
Ásia Oriental
Oceânia

Hundreds of millions of people in Asia are dependent on shifting cultivation, yet the practice has tended to be seen in a negative light and discouraged by policy makers. This document challenges prevailing assumptions, arguing that shifting cultivation – if properly practised – is actually a ‘good practice’ system for productively using hill and mountain land, while ensuring conservation of forest, soil, and water resources. Focusing on Eastern Himalayan farmers, it looks at whether there is a need for new, more effective and more socially acceptable policy options that help to improve shi