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Valuing Biodiversity Enhancement in New Zealand

Richard T. Yao, Pamela Kaval


In this study, we determined the value of biodiversity enhancement programmes in New Zealand using the contingent valuation method. Programmes were to provide native trees for individuals or community groups to plant on private and public lands. These native plants would attract native animals to the area and increase the amount of native vegetation, therefore increasing native biodiversity. Data were collected from 729 people throughout the country through a phone-mail survey. Data were analyzed with linear and exponential logistic regressions. Result test comparisons were made and revealed the exponential form to be superior for this dataset. Results also revealed that biodiversity enhancement programmes were valuable to respondents for both private and public lands. On average, respondents were willing-to-pay $42 (2007 NZD) annually in their rates (taxes) to support a government-initiated private-land biodiversity programme and $82 (2007 NZD) to support a government initiated public-land biodiversity programme. This study also determined several factors that influenced a respondent’s decision to financially support biodiversity enhancement programmes on private and public lands, they included age, property location, employment status, and property ownership.


biodiversity, contingent valuation, New Zealand, willingness-to-pay, native species

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