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dc.contributor.authorDeng, Xiangzheng
dc.contributor.authorHuang, Jikun
dc.contributor.authorUchida, Emi
dc.contributor.authorRozelle, Scott
dc.contributor.authorGibson, John
dc.identifier.citationDeng, X., Huang, J., Uchida, E., Rozelle, S. & Gibson, J. (2010). Pressure cookers or pressure valves: Do roads lead to deforestation in China? Journal of Environmental Economics and Management, 61(1), 79-94.en_NZ
dc.description.abstractThe effect of roads on forests is ambiguous. Many studies conclude that building and upgrading roads increases pressure on forests but some find that new and better roads may reduce the rate of deforestation. In this paper we use satellite remote sensing images of forest cover in Jiangxi Province, China, to test whether the existence and the size of roads (ranging from expressways to tertiary roads) in 1995 affected the level of forest cover in 2000 or the rate of change between 1995 and 2000. To account for road access for each of our 1 km2 (“pixel”) units of forest cover we measure whether or not and what type of roads penetrate the “watershed” in which the pixel lies. These watersheds allow more plausible measures of accessibility than do traditional “crowfly” distance measures that ignore topography. To account for possible confounding we also use 12 additional covariates: geographic and climatic variables (e.g., elevation, slope, rainfall, temperature, soil properties); demographic and economic variables (e.g., local population and GDP per square kilometer); and distance variables (e.g., distance to the nearest provincial capital). Although simple univariate OLS regressions show that forest levels are lower and deforestation rates higher either when there is a road, or when there is a higher quality road, these results are not robust. Controlling for all of the covariates and also using recently developed covariate matching techniques to estimate treatment effects, we find that roads in China’s Jiangxi Province can most safely be described as having no impact on the level of forests and no impact on the rate of deforestation.en_NZ
dc.subjectland useen_NZ
dc.subjectforest coveren_NZ
dc.subjectone kilometer square pixelen_NZ
dc.subjectcovariate matchingen_NZ
dc.titlePressure cookers or pressure valves: Do roads lead to deforestation in China?en_NZ
dc.typeJournal Articleen_NZ
dc.relation.isPartOfJournal of Environmental Economics and Managementen_NZ

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