Demand for water use by new tree plantations and downstream economic, social and environmental interests

Thomas Nordblom, Iain Hume, John Finlayson

    Research output: Book chapter/Published conference paperChapter (peer-reviewed)peer-review

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    New tree plantations in upland watersheds may directly displace other land uses such asperennial or annual pastures or cropping on arable land, affecting both water yields (W) and river saltloads (S). Our 'factorial vector analysis' describes the envelope of possible changes in long run W,Scombinations. Economic analyses find least-cost changes in land uses to attain particular W,S targetsfrom a watershed. Changes alter watershed net present value as direct and opportunity costs aresubtracted from earning prospects of new tree plantations given stumpage values ($40, $50, $60 and$70/m3) to determine their marginal values of water. Water use distributions are projected under tworegulatory settings: (1) where no downstream water entitlements need be purchased, and (2) where thelatter are required for new plantations. Economic balances are projected with initial supply of waterentitlements held by downstream irrigators, stock and domestic interests and wetland environmental areas.
    Original languageEnglish
    Title of host publicationRevisiting experimental catchment studies in forest hydrology
    EditorsAshley Webb, M Bonell, L Bren, P.N.J. Lane, D McGuire, D.G. Neary, J Nettles, D.F. Scott, J.D. Stednick, Y Wang
    Place of PublicationOxfordshire, UK
    PublisherIAHS Press
    Number of pages16
    ISBN (Print)9781907161315
    Publication statusPublished - 2012


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