Download or read book A Spatiotemporal Model of Forest Cover Dynamics and Household Land Use Decisions by Subsistence Farmers in Southern Cameroon written by Douglas R. Brown and published by . This book was released on 2013 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Shifting cultivation is one of many phenomena involving the interaction of humans with their natural environment, for which the spatial and temporal dimensions are essential to understanding the system. As a spatiotemporal phenomenon, shifting cultivation uses forest resources to provide the means for human sustenance, both from the temporary use of patches of forest for agricultural production and from the harvest of non-timber forest products from that same mosaic of forest and agricultural land. There are many factors that affect household decisions to clear forested land for cultivation as well as the permanence of land clearing (deforestation or temporary clearing). Even though subsistence households act independently, their individual decisions have a significant collective impact. Key to addressing the sustainable use of forest resources is a correct understanding of household decision-making and spatiotemporal dynamics. The principal objective of this research is to investigate the spatial and temporal dynamics of forest use by subsistence agricultural households by developing a mathematical model that is able to mimic the spatial patterns (mosaic) of land use typical of subsistence agriculture in southern Cameroon. More specifically, I develop a conceptual framework for the dynamic choice of spatial location for agricultural production. I investigate household preferences for particular characteristics of forest and fallow land for cultivation and predict them based on household socioeconomic characteristics. The resulting parameter estimates drive a structural simulation model that simultaneously models decisions in space and over time by a heterogeneous set of households representative of the study communities. The model is specified so that it can be adapted to different locations and their specific social and economic contexts. While the ultimate goal is to link the model developed herein to a larger model of livelihood choice at the household level, at its present level of development it provides significant insights into the spatiotemporal dynamics of forest use and shifting agricultural production. It is able to differentiate between the standard Boserup hypothesis of population-induced intensification and model other factors that have a significant impact at the village and household scale. Personal preferences over particular forest or fallow characteristics impact land use intensity. The model demonstrates the importance of path-dependency as a factor in the evolution of the forest-fallow-agriculture mosaic. Finally, I demonstrate its use for comparative dynamic analysis of the impact of exogenous economic shocks and alternate policy scenarios on households and the agriculture-fallow-forest mosaic.
Download or read book A Spatiotemporal Model of Forest Cover Dynamics and Household Land Use Decisions by Subsistence Farmers in Southern Cameroon written by Douglas Ronald Brown and published by Ann Arbor, Mich. : University Microfilms International. This book was released on 2004 with total page 796 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Spatiotemporal Model of Shifting Cultivation and Forest Cover Dynamics written by Douglas R. Brown and published by . This book was released on 2007 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Shifting cultivation is the primary means of livelihood for subsistence farmers throughout the humid forests of the tropics. They rely on the forest landscape as a source of fertile land to sustain their livelihood. Sustainable use of the resource base requires long periods of fallow and the ability to move the zone of active cultivation from one location to another over time. At the individual patch or field level, shifting cultivation is essentially a resource extraction problem somewhat akin to a pulse fishery - intensive use of the stock of soil fertility for a short period followed by a long idle period to allow regeneration of the stock. This paper describes a spatiotemporal model of resource extraction adapted to the use of forest resources by shifting cultivators. In contrast to other models of spatial resource exploitation, decision criteria depend on a nonseparable agricultural household model extended to accommodate both the temporal and spatial dimensions. The paper focuses on the theoretical issues related to modelling shifting cultivation. It concludes with a brief discussion of the development and implementation of a simulation model based on the theoretical approach described herein.
Download or read book Slash and Burn Agriculture in the Humid Forest Zone of Southern Cameroon written by Jacques Kanmegne and published by . This book was released on 2004 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt: .
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2005 with total page 644 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Beyond Boserup written by Douglas R. Brown and published by . This book was released on 2004 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Shifting cultivation is the primary means of livelihood for subsistence farmers in the Congo Basin of central Africa. This agroforestry system, which depends on long periods of forest-fallow to maintain soil fertility as well as for the provision of non-wood forest products, is under pressure as populations increase. Where long fallows are no longer possible, productivity declines in the absence of input substitution or the forest frontier is pushed further back as new land is brought into the rotation. Conversely, where the system is in equilibrium the landscape is characterized by a dynamically stable mosaic of land use that provides an adequate rural livelihood. The landscape and household level impacts of shifting cultivation and ex ante assessment of alternative agroforestry systems are best captured by a model that accounts for spatial and temporal factors. To do so requires an approach that explicitly accounts for the differing relative importance of various economic (e.g., fallow type and soil fertility) and non-economic (e.g., proximity to other fields and protection of land use rights) decision criteria in the household's choice of location to cultivate in any one year. This paper outlines an approach to soliciting this information, discusses the implications of the decision criteria for land use intensification and uses them to model household decision-making in a way that effectively simulates the spatial and dynamic mosaic of land use characteristic of shifting cultivation. Not only are non-economic decision criteria important in land use decisions in general, they also have a significant impact on land use intensification. In fact, the research described here demonstrates that both household-specific preferences and household-specific initial conditions can lead to intensification of land use apart from intensification that arises due to increasing population density a la Boserup (1965).
Download or read book Forest Tenure and Access to Forest Resources in Cameroon written by and published by IIED. This book was released on 1997 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Soil Macrofauna Community Structure Along a Gradient of Land Use Intensification in the Humid Forest Zone of Southern Cameroon written by Madong à Birang and published by . This book was released on 2004 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt: 80 Ant species were found.
Download or read book Public Policies and the Misuse of Forest Resources written by World Resources Institute and published by Cambridge University Press. This book was released on 1988-09-30 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt: Six contributors explore the role of governments in accelerating the rate of forest destruction by providing direct and indirect subsidies to support what would otherwise be non-commercial logging operations. Without these financial incentives, most timber operations in the tropics would cease. In a series of country-by-country investigations, including examples from the developed and developing worlds, this book documents the government policies that are leading to the misuse of forest resources. Each is written by an authority on the county, and each contains descriptive, analytical and empirical material on key policies and their effects. The final country analysis focuses on the United States, where the consequences of the subsidized timber sales by the US Forest Service from most of the national forests are discussed. The book concludes with an overview of the impact of forest policies and the role of bilateral and multilateral agencies in their formulation. By directing attention toward the political dimension involved in forest clearance, this book will provide a clearer insight into the basic reasons why forests continue to be destroyed despite the outcry raised by conservationists.
Download or read book Deforestation Trends in the Congo Basin written by Carole Megevand and published by World Bank Publications. This book was released on 2013-01-25 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This volume is a product of the staff of the International Bank for Reconstruction and Development / The World Bank."
Download or read book The impact of disasters and crises on agriculture and food security 2021 written by Food and Agriculture Organization of the United Nations and published by Food & Agriculture Org.. This book was released on 2021-03-17 with total page 245 pages. Available in PDF, EPUB and Kindle. Book excerpt: On top of a decade of exacerbated disaster loss, exceptional global heat, retreating ice and rising sea levels, humanity and our food security face a range of new and unprecedented hazards, such as megafires, extreme weather events, desert locust swarms of magnitudes previously unseen, and the COVID-19 pandemic. Agriculture underpins the livelihoods of over 2.5 billion people – most of them in low-income developing countries – and remains a key driver of development. At no other point in history has agriculture been faced with such an array of familiar and unfamiliar risks, interacting in a hyperconnected world and a precipitously changing landscape. And agriculture continues to absorb a disproportionate share of the damage and loss wrought by disasters. Their growing frequency and intensity, along with the systemic nature of risk, are upending people’s lives, devastating livelihoods, and jeopardizing our entire food system. This report makes a powerful case for investing in resilience and disaster risk reduction – especially data gathering and analysis for evidence informed action – to ensure agriculture’s crucial role in achieving the future we want.
Download or read book A Review and Assessment of Land use Change Models written by Chetan Agarwal and published by . This book was released on 2002 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Sustainable Development Goals written by Pia Katila and published by Cambridge University Press. This book was released on 2019-12-12 with total page 653 pages. Available in PDF, EPUB and Kindle. Book excerpt: A global assessment of potential and anticipated impacts of efforts to achieve the SDGs on forests and related socio-economic systems. This title is available as Open Access via Cambridge Core.
Download or read book State of the World s Forests 2007 written by Food and Agriculture Organization of the United Nations and published by Food & Agriculture Org.. This book was released on 2007 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the 7th edition of the FAO's biennial report on the state of global forest resources, recent developments and emerging issues in the forest sector. This edition focuses on progress towards sustainable forest management at the regional and global levels, with each regional report structured according to seven thematic elements: the extent of forest resources; biological diversity; forest health and vitality; productive functions of forest resources; protective functions of forest resources; socio-economic functions; and legal, policy and institutional frameworks. These summaries are based on the most current information available, including new data from the Global Forest Resources Assessment 2005 (FRA 2005). The report goes on to consider 18 key issues in the forest sector, including: climate change, forest landscape restoration, forest tenure, invasive species, wildlife management and wood energy. The overall conclusion is that whilst progress is being made, it is very uneven with those regions with developing economies and tropical ecosystems continuing to lose forest area whilst lacking adequate institutions to reverse this trend. The biggest limitation for evaluating progress is weak data, with many countries lacking the financial resources to undertake national forest assessments.
Download or read book State of the World s Forests 2005 written by Food and Agriculture Organization of the United Nations and published by Food & Agriculture Org.. This book was released on 2005 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the sixth edition of the biennial report on the current state of global forest resources and recent developments and emerging issues in the forest sector. It includes contributions from key non-governmental organisations and from individuals, as well as articles written by FAO staff. This edition focuses on options for sustainable forestry management to maximise the sector's economic viability, and issues discussed include forest resources, conservation aspects, institutional issues and legal frameworks, international policy developments, the economic benefits of agroforestry, wood energy production, import tariffs and non-tariff measures, and the impact of violent conflicts on forest resources.
Download or read book The United Nations world water development report 2015 water for a sustainable world written by Connor, Richard and published by UNESCO Publishing. This book was released on 2015-03-23 with total page 139 pages. Available in PDF, EPUB and Kindle. Book excerpt: The United Nations World Water Assessment Programme (WWAP) is hosted and led by UNESCO. WWAP brings together the work of 31 UN-Water Members as well as 37 Partners to publish the United Nations World Water Development Report (WWDR) series. Under the theme Water for Sustainable Development, the WWDR 2015 has been prepared as a contribution from UN-Water to the discussions surrounding the post-2015 framework for global sustainable development. Highlighting water's unique and often complex role in achieving various sustainable development objectives, the WWDR 2015 is addressed to policy- and decision-makers inside and outside the water community, as well as to anyone with an interest in freshwater and its many life-giving benefits. The report sets an aspirational yet achievable vision for the future of water towards 2050 by describing how water supports healthy and prosperous human communities, maintains well functioning ecosystems and ecological services, and provides a cornerstone for short and long-term economic development. It provides an overview of the challenges, issues and trends in terms of water resources, their use and water-related services like water supply and sanitation. The report also offers, in a rigorous yet accessible manner, guidance about how to address these challenges and to seize the opportunities that sound water management provides in order to achieve and maintain economic, social and environmental sustainability.
