Résultats de la recherche | Land Portal

Résultats de la recherche

Showing items 1 through 9 of 84.
  1. Library Resource
    Documents et rapports de conférence
    mars, 2003

    Conventional national accounting practice emphasises depreciation as both a physical loss inproductive capital and an economic loss due to obsolescence. This emphasis is only partiallyparalleled in prescriptions for natural resource accounting, where resource depletion is typicallytreated as “physical capital depreciation”. Depreciation resulting from obsolescence—and thusrelative price changes rather than physical wastage—does not feature in resource accounting.The question is, what (if anything) does a consideration of obsolescence imply for work inresource accounting?

  2. Library Resource
    Documents et rapports de conférence
    mars, 2003
    Australie

    This paper reviews pastoral lease arrangements across Australia and considers theextent to which these affect the emergence of non-pastoral land uses. Some 44 per centof Australia is made up of pastoral leases. The predominant use of these leases is forgrazing livestock (primarily sheep and cattle). However, there is increasing demandfor this land to be used for non-pastoral uses, such as tourism, farming of nonconventionallivestock (such as goats, kangaroos and camels) and conservation ofnative wildlife.

  3. Library Resource
    Documents et rapports de conférence
    décembre, 2003
    Afrique du Sud, Afrique, Afrique australe

    The world-wide trend of a growing organic sector is also detectable in South Africa. From 2000 to 2002 the number of farmers who had converted to organic farming in South Africa increased sixfold, and although organic farming still accounts only for a minute percentage of the total number agricultural producers, the increasing importance of this sector is apparent. Based on survey results, information was gathered about organic farmers in South Africa concerning socio-demographic aspects, farming operations, motivations and problems of the conversion process.

  4. Library Resource
    Documents et rapports de conférence
    décembre, 2003

    This paper examines the impact of having a preservation program on the rate of farmland loss for a 50 year period (1949-1997) in six Mid-Atlantic States: Delaware, Maryland, New York, New Jersey, Pennsylvania, and Virginia. Because farmland loss is affected by changing agricultural profitability, demand for land for non-agricultural purposes, and farmers' alternative employment opportunities, we include variables to control for these factors as well.

  5. Library Resource
    Documents et rapports de conférence
    mars, 2003

    Auctions are increasingly being considered as a mechanism for allocating conservationcontracts to private landowners. This interest is based on the widely held belief thatcompetitive bidding helps minimize information rents. This study constructs an agent-basedmodel to evaluate the long term performance of conservation auctions undersettings where bidders are allowed to learn from previous outcomes. The results clearlyindicate that the efficiency benefits of one-shot auctions are quickly eroded underdynamic settings.

  6. Library Resource
    Documents et rapports de conférence
    décembre, 2003

    Based on a spatiotemporal hedonic farmland price model and county-level data in Illinois from 1979 to 1999, we examined the impact of swine production on farmland values. Our results show that, in addition to the conventional determinants of farmland values, an increase in swine production intensity has a negative relationship with farmland values while an increase in swine operation scale had a positive association with farmland values at the county level in Illinois.

  7. Library Resource
    Documents et rapports de conférence
    décembre, 2003

    This paper advances an empirical model assessing how, over both time and space, changes in land-use respond to changing economic and ecological conditions. Focusing on Central North Carolina, a region that has undergone extensive changes in forest cover and agricultural lands over the past two decades, landscape dynamics are modeled by exploiting a spatial database that links several satellite images spanning the years 1975-1999 to a suite of socioeconomic, institutional and GIS-created explanatory variables.

  8. Library Resource
    Documents et rapports de conférence
    décembre, 2003
    Afrique

    Although soil fertility is recognized as a primary constraint to agricultural production in developing countries, use of fertilizer in Sub-Saharan Africa is declining. Smallholder farmers still rely heavily on livestock manure for soil fertility management. To explore the determinants of soil fertility management practices, including both the use of cattle manure and inorganic fertilizer, data are used from a sample of 3,330 geo-referenced farm households across Central and Western Kenya. A bivariate probit model is applied to jointly examine the use of the two technologies.

  9. Library Resource
    Documents et rapports de conférence
    mars, 2003
    Indonésie

    Growing trees with crops has environmental and economic implications. Trees can help prevent landdegradation and increase biodiversity while at the same time allow for the continued use of the land toproduce agricultural crops. In fact, growing trees alongside crops is known to improve both the productivityand sustainability of the land. However, due to high labour-input requirements, high costs of establishment,and delayed revenue returns, trees are often not economically attractive to landholders.

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