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Nick Hanley is based in the Economics Department, University of Stirling, UK. Sergio Colombo is based in the Agricultural Economics Department, IFAPA, Granada, Spain. E-mail: scolombo@ugr.es for correspondence. Bengt Kriström is based in the Department of Forest Economics, SLU, Umea, Sweden. Fiona Watson is based at Past Experience, Perthshire, Scotland. We thank the Arts and Humanities Research Board for funding this work through their funding of the AHRB Centre for Environmental History at the University of Stirling. Fiona Watson was the Director of this Centre during the empirical parts of this research. We also thank two anonymous referees and the editors for comments on an earlier version of the paper.
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Accounting for Negative, Zero and Positive Willingness to Pay for Landscape Change in a National Park
Article first published online: 26 SEP 2008
DOI: 10.1111/j.1477-9552.2008.00180.x
© 2008 The Authors. Journal compilation © 2008 The Agricultural Economics Society
Additional Information
How to Cite
Hanley, N., Colombo, S., Kriström, B. and Watson, F. (2009), Accounting for Negative, Zero and Positive Willingness to Pay for Landscape Change in a National Park. Journal of Agricultural Economics, 60: 1–16. doi: 10.1111/j.1477-9552.2008.00180.x
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Nick Hanley is based in the Economics Department, University of Stirling, UK. Sergio Colombo is based in the Agricultural Economics Department, IFAPA, Granada, Spain. E-mail: scolombo@ugr.es for correspondence. Bengt Kriström is based in the Department of Forest Economics, SLU, Umea, Sweden. Fiona Watson is based at Past Experience, Perthshire, Scotland. We thank the Arts and Humanities Research Board for funding this work through their funding of the AHRB Centre for Environmental History at the University of Stirling. Fiona Watson was the Director of this Centre during the empirical parts of this research. We also thank two anonymous referees and the editors for comments on an earlier version of the paper.
Publication History
- Issue published online: 5 JAN 2009
- Article first published online: 26 SEP 2008
- (Original submitted October 2007, revision received June 2008, accepted June 2008.)
- Abstract
- Article
- References
- Cited By
Keywords:
- Contingent valuation;
- national parks;
- negative WTP;
- spike models
- D6;
- Q2
Abstract
In contingent valuation, despite the fact that many externalities manifest themselves as costs to some and benefits to others, most studies restrict willingness to pay to being non-negative. In this paper, we investigate the impact of allowing for negative, zero and positive preferences for prospective changes in woodland cover in two UK national parks, the Lake District and the Trossachs. An extended spike model is used to accomplish this. The policy implications of not allowing for negative values in terms of aggregate benefits are also investigated, by comparing the extended spike model with a simple spike making use of only zero and positive bids, and a model which considers positive bids only. We find that ignoring negative values over-states the aggregate benefits of a woodland planting project by up to 44%.