Passar para o conteúdo principal

page search

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

ambiente

AGROVOC URI:

Displaying 2125 - 2136 of 3187

Africa: atlas of our changing environment

Dezembro, 2007
África subsariana

This African atlas is the first publication to use satellite photos to depict environmental change in each and every African country during the last thirty years. Through an array of satellite images, graphs, maps, and photographs, this Atlas presents a powerful testament to the adverse changes taking place on the African landscape as a result of intensified  natural and human impacts. The atlas is composed of three parts:

Roads, population pressures and deforestation in Thailand, 1976 - 1989

Dezembro, 1996
Tailândia
Ásia Oriental
Oceânia

Population pressures play less of a role in deforestation than earlier studies of Thailand found. Between 1976 and 1989, Thailand lost 28 percent ofits forest cover. To analyze how road building, population pressure,and geophysical factors affected deforestation in Thailand during that period, Cropper, Griffiths, and Mani develop a model in whichthe amount of land cleared, the number of agricultural households,and the size of the road network are jointly determined.The model assumes that the amount of land cleared reflects an equilibrium in the land market.

Best practices of Environmental Information Systems (EIS): the case of Zimbabwe

Dezembro, 1996
África subsariana

report considers the potential, constraints, successes and weaknesses of EIS (environment and land information systems, geographical information systems (GIS)), based on practical approaches in Zimbabwe were assessed and lessons-learnt were developed.The process of developing a national EIS in Zimbabwe is also in the evolutionary phase. The country does not yet have a comprehensive nationally co-ordinated EIS. At the time of this study, several information systems co-exist which can be considered EIS sub-systems.

Tragedy of the Commons for Community-based Forest Management in Latin America?

Dezembro, 1996
América Latina e Caribe

This paper considers the evidence surrounding the popular view that common property management regimes (CPMRs) of forest management in Latin America must inevitably break down in the face of economic and demographic pressures. The evidence shows that there have been both positive and negative experiences, with a number of policy implications. The over-riding need is to correct for institutional and policy failures which have catalysed the erosion of CPMRs.

Grey Literature Library - Social Forestry Collection

Dezembro, 1999

Grey literature collection includes documents from India over the last twenty years, the collection traces the process of social forestry, which aimed to satisfy local needs through fuelwood plantations and to divert pressure from natural forest through the participation of private framers and communities.The papers included are as follows:Village-level management of common property resources, especially fuelwood and fodder resources in Karnataka, IndiaBrokensha, D. 1988Women and wasteland development - policy issues.

New Institutional Economics: A Survey of Property Rights and Natural Resource Management [case study from Rajasthan]

Dezembro, 1997

In this paper, the results of a recent case study of forest conservation and management in Sariska Tiger Reserve, Rajasthan, India are reported. Changes in land use, grazing, household fuelwood collection and inadequate management institutions are identified as key factors causing forest degradation. The paper demonstrates that quantitative analysis, employing data from fairly large samples of households and villages, is a useful supplement to the qualitative methods dominating in studies of conservation and natural resource management institutions.

Fuelwood Consumption and Forest Degradation: A Household Model for Domestic Energy Substitution in Rural India [Rajasthan]

Dezembro, 1997

Paper examines domestic energy supply and demand in Northwest India. A household model is set up to analyse the links between forest scarcity and household energy consumption, focusing on the substitution of fuels from the forests and commons and the private domain. The model is estimated using recently collected data from villages bordering Sariska Tiger Reserve in Rajasthan, India. A novel maximum entropy approach is used for estimation.

Roads, lands, markets, and deforestation: a spatial model of land use in Belize

Dezembro, 1994
Belize
América Latina e Caribe

Will intensifying the road network around market areas produce greater economic returns and less environmental damage than extending the road network into new areas?Rural roads promote economic development but also facilitate deforestation. To explore the trade-offs between development and environmental damage posed by road building, Chomitz and Gray develop and estimate a spatially explicit model of land use.

Logs or Local Livelihood?: The Case for Legalizing Community Control of Forest Lands in Ratanakiri, Cambodia

Dezembro, 1996
Cambodja
Oceânia
Ásia Oriental

A recent eighteen-month economic study of the benefits of alternative uses of forest and in Ratanakiri province recommends the exclusion of customary forest land from current and future commercial concessions. The study compares the economic benefits of using forest land in Ratanakiri for the traditional collection of non-timber forest products by ethnic communities, with the benefits of commercial timber harvesting. The main conclusions of the study are that non-timber forest products (NTFP) are worth a lot, much more than previously thought.

Environmental Problems in Southeast Asia: Property Regimes as Cause and Solution

Dezembro, 1996

Brief paper on the role of property rights in the economic analysis of environmental problems in Southeast Asia. First talks about the causal role of property rights in the existence of environmental problems, then how property rights must be incorporated into the economic analyses of these problems. Finally, addresses the extent to which changes in property regimes may offer scope for solving persistent environmental problems.