A national riparian restoration programme in New Zealand: Is it value for money?
Autor: | William G. Lee, Adam Daigneault, Florian V. Eppink |
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Rok vydání: | 2017 |
Předmět: |
Greenhouse Effect
Conservation of Natural Resources Environmental Engineering Opportunity cost 010504 meteorology & atmospheric sciences Natural resource economics Climate Fresh Water 010501 environmental sciences Management Monitoring Policy and Law 01 natural sciences Fencing Rivers Water Supply Waste Management and Disposal Restoration ecology Ecosystem Environmental Restoration and Remediation 0105 earth and related environmental sciences Riparian zone geography Ecosystem health geography.geographical_feature_category Cost–benefit analysis Land use business.industry Environmental resource management Agriculture Biodiversity General Medicine Plants Models Economic Primary sector of the economy Environmental science business New Zealand |
Zdroj: | Journal of Environmental Management. 187:166-177 |
ISSN: | 0301-4797 |
DOI: | 10.1016/j.jenvman.2016.11.013 |
Popis: | National scale initiatives are being attempted in New Zealand (NZ) to meet important environmental goals following land-use intensification over recent decades. Riparian restoration to filter agricultural spillover effects is currently the most widely practised mitigation measure but few studies have investigated the cumulative value of these practices at a national level. We use an applied economic land use model the benefits (GHG emissions, N leaching, P loss, sedimentation and biodiversity gain) and relevant costs (fencing, alternative stock water supplies, restoration planting and opportunity costs) of restoring riparian margins (5–50 m) on all streams in NZ flowing through current primary sector land. Extensive sensitivity analysis reveals that depending on margin width and cost assumptions, riparian margin restoration generates net benefits of between NZ$1.7 billion – $5.2 billion/yr and benefit-cost ratios ranging between 1.4 and 22.4. This suggests that even when not monetising the increase in biodiversity or components of stream ecosystem health and other benefits from planting riparian strips, the benefits to climate and freshwater are significantly greater than the implementation costs of riparian restoration. |
Databáze: | OpenAIRE |
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