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)

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Abstract

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
Place of PublicationOxfordshire, UK
PublisherIAHS Press
Chapter4
Pages217-232
Number of pages16
Edition1
ISBN (Print)9781907161315
Publication statusPublished - 2012

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    Nordblom, T., Hume, I., & Finlayson, J. (2012). Demand for water use by new tree plantations and downstream economic, social and environmental interests. In A. Webb (Ed.), Revisiting Experimental Catchment Studies in Forest Hydrology (1 ed., pp. 217-232). IAHS Press.