Mathematical Optimisation of Drainage and Economic Land Use for Target Water and Salt Yields

22 Pages Posted: 7 Sep 2006

See all articles by Thomas L. Nordblom

Thomas L. Nordblom

Graham Centre for Agricultural Innovation (Charles Sturt University & NSW DPI)

Iain Hume

Australian National University

Andrew Bathgate

Government of New South Wales - Department of Primary Industries

Michael Reynolds

Government of New South Wales - Department of Primary Industries

Abstract

Land managers in upper catchments are being asked to make expensive changes in land use, such as by planting trees, to attain environmental service targets, including reduced salt loads in rivers, to meet needs of downstream towns, farms and natural habitats. End-of-valley targets for salt loads have sometimes been set without a quantitative model of cause and effect regarding impacts on water yields, economic efficiency or distribution of costs and benefits among stakeholders. This paper presents a method for calculating a menu of technically feasible options for changes from current to future mean water yields and salt loads from upstream catchments having local groundwater flow systems, and the land-use changes to attain each of these options at minimum cost. It sets the economic stage for upstream landholders to negotiate with downstream parties future water-yield and salt-load targets, on the basis of what it will cost to supply these ecosystem services.

Suggested Citation

Nordblom, Thomas L. and Hume, Iain and Bathgate, Andrew and Reynolds, Michael, Mathematical Optimisation of Drainage and Economic Land Use for Target Water and Salt Yields. Australian Journal of Agricultural and Resource Economics, Vol. 50, No. 3, pp. 381-402, September 2006. Available at SSRN: https://ssrn.com/abstract=928723 or http://dx.doi.org/10.1111/j.1467-8489.2006.00356.x

Thomas L. Nordblom (Contact Author)

Graham Centre for Agricultural Innovation (Charles Sturt University & NSW DPI) ( email )

Albert Pugsley Place
Wagga Wagga, NSW 2650
Australia
+61419290428 (Phone)

HOME PAGE: http://www.csu.edu.au/research/grahamcentre/our-people/members2/tom-nordblom

Iain Hume

Australian National University ( email )

Canberra, Australian Capital Territory
Australia
+(02) 6125 4020 (Phone)

Andrew Bathgate

Government of New South Wales - Department of Primary Industries

Locked Bag 21
Orange NSW 2800
Australia

Michael Reynolds

Government of New South Wales - Department of Primary Industries

Locked Bag 21
Orange NSW 2800
Australia

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