Résultats de la recherche | Land Portal

Résultats de la recherche

Showing items 1 through 9 of 14.
  1. Library Resource
    Documents et rapports de conférence
    mars, 2003
    Australie

    Recent environmental assessments have highlighted the extent of land degradation inAustralia and the significant costs involved in addressing it. With projected investment costsrunning into tens of billions of dollars, it is not surprising that greater attention is now beingfocussed on who should pay. One idea gathering significant momentum has been theimposition of an environmental levy.

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

    An appropriate economic framework for valuing the benefits of weed management technologies is to treatweeds as a renewable resource stock problem. Consequently, the weed seed bank is defined as a renewableresource that changes through time due to management and seasonal conditions. The goal of decision-makers isto manage this (negative) resource so as to maximise returns over some pre-specified period of time. Amodelling framework is presented for evaluating the biological and economic effects of weed management.

  3. 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.

  4. 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?

  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
    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.

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

    In this paper we present results of a statistical analysis of 380 landholders in the North Central and North East regions in Victoria that were interviewed after the first bidding round of the BushTender scheme. This survey asked questions about the economic, attitudinal and demographic factors that influenced their awareness and participation in BushTender. We use logit regression techniques to investigate awareness and participation behaviour of these landholders in BushTender.

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

    Benefits ascribed to the revegetation of farming landscapes include enhancement ofbiodiversity, reduction in the advance of dryland salinity, sequestration of greenhousegases, control of soil erosion, greater protection of agricultural activities from adverseweather conditions and an improved aesthetic value of rural lands. In this paper,economic analyses were performed to determine the net benefits to landholders ofcarrying out revegetation.

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

    This paper explores the economics of land degradation in the rice-shrimp system inthe Mekong Delta of Vietnam. A bioeconomic NPV model was developed toevaluate and compare the long-term benefits of alternative production choices andfarm technologies. There is an alternative rice-shrimp technology emerging inVietnam that does not have the same land degrading impacts as the 'traditional'system, however the high capital outlay and risk associated with such technologypresents its own problems.

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

    The management of nonpoint source water pollution presents an immense challenge toeconomists and policy makers alike. A complex array of physical, economic, political andinstitutional barriers lie between theoretically appealing textbook prescriptions and theirtransition into successful real-world solutions. Underlying beliefs about property rights, interestgroup politics and the transaction costs associated with designing and implementing successfulmeasures have all played a particularly critical role.

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