Résultats de la recherche | Land Portal

Résultats de la recherche

Showing items 1 through 9 of 18.
  1. Library Resource
    Documents et rapports de conférence
    décembre, 2002
    États-Unis d'Amérique

    The purpose of this paper has been to present quality-adjusted values for land in the United States and nine European countries using price and quantity data for 1990. Disregarding such differences in the quality-adjusted land input would generate biased estimates of the land input and thus of total factor productivity. Land quality adjustments could potentially be enhanced further with additional data on soil characteristics, climate, and other productivity-related characteristics.

  2. Library Resource
    Documents de politique et mémoires
    décembre, 2002
    Brésil, États-Unis d'Amérique, Argentine

    We develop a new partial equilibrium, four-region world trade model for the soybean complex comprising soybeans, soybean oil, and soybean meal. In the model, some consumers view genetically modified Roundup Ready (RR) soybeans and products as weakly inferior to conventional ones; the RR seed is patented and sold worldwide by a U.S. firm; and producers employ a costly segregation technology to separate conventional and biotech products in the supply chain.

  3. Library Resource
    Documents de politique et mémoires
    décembre, 1998
    États-Unis d'Amérique

    Today, there are only about 15,000 black farmers in the United States. Declining by 98 percent since 1920, black farmers have suffered losses attributable to public policy, economic pressures, and racial oppression. All of these factors must be addressed if African-American farmers are to survive. In this paper, we use Census of Agriculture data and a follow-on survey in one Mississippi Delta county to review the current situation of black farmers.

  4. Library Resource
    Documents et rapports de conférence
    décembre, 2006
    États-Unis d'Amérique

    Genetically modified (GM) cotton varieties have changed many aspects of cotton production in the United States. The advent of GM varieties has fueled the ongoing trend of increasing farm size and fewer farmers. Mississippi is no exception to this trend. The rapid adoption of GM cotton varieties in Mississippi has allowed some producers to increase the acreage of their farming operation. This study analyses the impact of GM varieties on relative profitability over certain types of land tenure arrangements.

  5. Library Resource
    Documents de politique et mémoires
    décembre, 2002
    États-Unis d'Amérique

    Leafy spurge is an exotic, noxious, perennial weed which is widely established in the north central United States and is an especially serious problem in the northern Great Plains (Bangsund et al. 1999). In 1997, the Agriculture Research Service and Animal Plant Health Inspection Service, U.S. Department of Agriculture, initiated a major Integrated Pest Management (IPM) research and demonstration project to develop and demonstrate ecologically based IPM strategies that can produce effective, affordable leafy spurge control.

  6. Library Resource
    Documents de politique et mémoires
    décembre, 1996
    États-Unis d'Amérique

    This paper presents estimates of the benefits and costs of alternative soil conservation policies in a spatially and temporally consistent framework. The policies considered are implementation of soil conservation practices with an objective of reducing erosion to a site's tolerance level and a policy with an objective of a voluntary 50% reduction in conventional tillage. Costs and erosion benefits of these two policies are compared with that obtained from CRP. The changes in erosion and cost are estimated relative to 1992 levels.

  7. Library Resource
    Documents de politique et mémoires
    décembre, 2001
    États-Unis d'Amérique

    Few economic analyses examine land trusts, their decisions, and the land-trust "industry," despite their growing importance. For example, statistics on the wide variation in the number of trusts in different regions of the United States raise questions about whether such variation makes economic sense. This paper builds a model to identify the optimal number of private conservation agents.

  8. Library Resource
    Documents de politique et mémoires
    décembre, 2005
    États-Unis d'Amérique

    Federal and state governments are searching for programs and/or policies to deal with the risks linked with uncertainty in water supplies and demands. Within the United States, competition among agricultural, urban, and environmental concerns for water is increasing. Drought conditions and water use restrictions have, at times, limited water supplies for these varied uses. The federal government stands in a unique position as both a major supplier and demander of water. As such, the federal government has put forward several programs for water conservation, information, and usage.

  9. Library Resource
    Documents de politique et mémoires
    décembre, 2001
    Australie, Canada, Nouvelle-Zélande

    This paper argues that the capacity of indigenous groups to engage effectively in environmental planning activities, at different levels, is crucial to securing land justice and community security. This argument is made against the backdrop of tensions between indigenous peoples residing in post-settler societies and nation states such as Australia, Canada, and New Zealand over questions of resource sovereignty.

  10. Library Resource
    Documents de politique et mémoires
    décembre, 2003
    États-Unis d'Amérique

    Changes in the use of land in the United States produce significant economic and environmental effects with important implications for a wide variety of policy issues, including protection of wildlife habitat, management of urban growth, and mitigation of global climate change. In contrast to previous descriptive and qualitative analyses of the trends in national land use, this paper uses an econometric approach to isolate the importance of historical changes in land-use profits and key government policies in determining national land-use changes from 1982 to 1997.

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