著 者
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Associate Professor,Faculty of Economics, Tohoku Gakuin University Visiting associate Professor, Graduate School of Economics and Management, Tohoku University
Associate Professor,Graduate School of Agricultural Science, Tohoku University
Professor, Graduate School of Information Sciences, Tohoku University
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要 旨
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Human–wildlife conflicts occur in many residential areas around the world, causing
human injuries and outbreaks of zoonotic diseases. Governments have implemented policies,
such as extermination, and construction of animal deterrent fences. When wildlife has a high
biological value, we face a trade-off between the benefits of wildlife conservation and human
safety. This study proposes a new policy of growing crops preferred by wildlife, rather than
crops for human consumption, in part of the farmland, thereby attracting wildlife to the
converted field and preventing them from entering residential areas. Using an ecosystemurban
economics model, we compare multiple policies including the conversion policy in
terms of social welfare, and show that, regardless of the wildlife value, the crop conversion
policy can be the most efficient, and fences with land use regulation is the second most
efficient policy. On the other hand, the commonly-used policy of extermination is not so
effective because exterminating wildlife with a high biological value significantly reduces
social welfare.
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