845 research outputs found

    Agriculture and climate change: An agenda for negotiation in Copenhagen

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    Table of Contents: •Overview by Gerald C. Nelson •Agricultural Science and Technology Needs for Climate Change Adaptation and Mitigation by Rudy Rabbinge •Reducing Methane Emissions from Irrigated Rice by Reiner Wassmann, Yasukazu Hosen, and Kay Sumfleth •Direct and Indirect Mitigation Through Tree and Soil Management by Brent M. Swallow and Meine van Noordwijk •The Potential for Soil Carbon Sequestration by Rattan Lal •Mitigating Greenhouse Gas Emissions from Livestock Systems by M. Herrero and P. K. Thornton •The Role of Nutrient Management in Mitigation by Helen C. Flynn •Monitoring, Reporting, and Verification Methodologies for Agriculture, Forestry, and Other Land Use by Sean Smukler and Cheryl Palm •Synergies Among Mitigation, Adaptation, and Sustainable Development by Pete Smith •The Importance of Property Rights in Climate Change Mitigation by Helen Markelova and Ruth Meinzen-Dick •The Important Role of Extension Systems by Kristin E. Davis •Adaptation to Climate Change: Household Impacts and Institutional Responses by Futoshi Yamauchi and Agnes Quisumbing •The Constructive Role of International Trade by Franz FischlerClimate change, Copenhagen, Science and technology, rice, Soil fertility management, Greenhouse gas, Nutrients, Forestry resources, Land use, Sustainable development, International trade, extension activities, Household behavior, Institutional Impacts,

    The Impact of Government Policies on Philippine Sugar

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    This paper examines the impact of trade policies, such as export taxes, marketing controls, low interest rate on production and equipment loans and special minimum wages, on sugar production and trade. It also investigates the effect of government polices on domestic prices and therefore the distribution of income from sugar production and processing.economic reform, sugar products

    CORRECTING FOR SPATIAL EFFECTS IN LIMITED DEPENDENT VARIABLE REGRESSION: ASSESSING THE VALUE OF "AD-HOC" TECHNIQUES

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    A common test for spatial dependence in regression analysis with continuous dependent variables is the Moran's I. For limited dependent variable models, the standard definition of a residual breaks down because yi is qualitative. Efforts to correct for potential spatial effects in limited dependent variable models have relied on ad-hoc methods such as including a spatial lag variable or using a regular sample that omits neighboring observations. Kelejian and Prucha have recently developed a version of Moran's I for limited dependent variable models. We present the statistic in a more accessible way and use it to test the value of previously-used ad-hoc techniques with a specific data set. Keywords: Morans I, Spatial Autocorrelation, Limited Dependent Variable Models, Land-Use Change, Geographical Information Systems (GIS),Moran's I, Spatial Autocorrelation, Limited Dependent Variable Models, Land-Use Change, Geographical Information Systems (GIS), Research Methods/ Statistical Methods,

    IS A BEEF DEFICIENCY PAYMENT PARETO-SUPERIOR IN SOUTH KOREA?

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    South Korea uses a quota and a tariff on beef imports to keep farm prices high. Part of the quota rents are used to support indirect benefits to producers. The welfare costs of these policies are analyzed. Following a suggestion of Hayami, a deficiency payment financed by tariff revenues from increased imports is considered as an alternative to the quota. As Anderson (1983) found for Japan, a deficiency payment is Pareto-superior only if indirect benefits from the quota revenue are ignored.International Relations/Trade,

    Assessing the Robustness of Predictions in Spatially Explicit Models of Land Use

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    We propose an information-theoretic approach to assess the performance of a discrete choice model used to analyze land use and land use change. We show that our disaggregated measure can be used to compare robustness of predictions across land use categories and across models. Furthermore, a proper reformulation of the problem shows that a disaggregated (observation by observation) log-likelihood lends itself to an information theoretic interpretation, which allows comparisons performance across models.Land Economics/Use,

    AN ASSESSMENT OF WORKAROUNDS FOR SPATIAL EFFECTS IN THE CASE OF BINARY PROBIT

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    The consequences of spatial effects on discrete choice models have not been well established. Various ad hoc workarounds have been proposed to mitigate potential estimation problems. This paper employs Monte Carlo simulation to investigate the severity of the problems introduced by spatial effects and the effectiveness of the workarounds.Research Methods/ Statistical Methods,

    Modeling Deforestation and Land Use Change: Sparse Data Environments

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    Land use change in developing countries is of great interest to policymakers and researchers from many backgrounds. Concerns about consequences of deforestation for global climate change and biodiversity have received the most publicity, but loss of wetlands, declining land productivity, and watershed management are also problems facing developing countries. In developing countries, analysis is especially constrained by lack of data. This paper reviews modeling approaches for data-constrained environments that involve methods such as neural nets and dynamic programming and research results that link individual household survey data with satellite images using geographic positioning systems.Land Economics/Use, Q15, Q23, R14,

    The impact of government policies on forest resource utilization

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    The Impact of Government Policies on Forest Resources Utilization

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    The impact of government policies on forest resource utilization is analyzed using two conceptual frameworks. The first focuses on determinants of resource depletion and the rate at which the resource is extracted by economic activity while the second focuses on the impact of government policies on land utilization. There is less than adequate understanding of the linkage between macro policy changes and prices. This paper realizes the importance of evaluating the trade-off between national financing programs that reduce resource depletion directly or indirectly by increasing labor productivity in other areas.natural resources and environment, forestry sector, environmental issues, utilization, environmental management

    Strategies for adapting to climate change in rural Sub-Saharan Africa

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    Given limited resources, adaptation strategies must target those populations most vulnerable to global change and equip those unable to adapt—generally the poorest—with the tools and incentives that will enable them to do so. ASARECA has recently carried out a study to enhance the understanding of climate change in the 10 ASARECA member countries. This report profiles the available climate change–related datasets and their accessibility and procurement details in the 10 ASARECA member countries. The report additionally assesses the incorporation of climate change adaptation strategies in national development plans and discusses each country’s position in the current UNFCCC negotiations. The study was conducted using a combination of extensive literature reviews and field visits to all 10 ASARECA member countries: Burundi, Democratic Republic of Congo, Eritrea, Ethiopia, Kenya, Madagascar, Rwanda, Sudan, Tanzania, and Uganda. The report is organized in four sections. The first provides a description of the available climate change–related databases, along with details about their sources and accessibility in each of the 10 ASARECA member countries. Section 3 is a review of the status of the incorporation of climate change adaptation strategies in national development plans, while section 4 discusses the countries’ positions in the current UNFCCC negotiations. Finally, section 5 offers concluding remarks and suggestions for a way forward. In addition to the study report, separate files of existing climate change–related datasets are provided in EXCEL format
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