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Economic parameters of deforestation

Author

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  • von Amsberg, Joachim
  • DEC

Abstract

Recent debate about how timber prices affect deforestation has focused mainly on how log export bans (imposed in many developing countries to protect domestic timber processing) affect deforestation. One side argues that the lower domestic timber prices that result from banning log exports increase deforestation by making forestry less profitable than competing land uses, such as agriculture. The other argues that lower timber prices reduce profits from logging, so they slow down deforestation caused by logging. The author argues that the conflicting views result from simplistic analysis that ignores differences between types of forest. The two positions are reconciled by distinguishing between unmanaged forests (for example, biologically mature, previously unlogged primary forests) and managed forests (such as forest plantations cultivated for periodic harvest). This distinction allows the derivation of unambiguous comparative static results and is useful because many nontimber benefits from forests (such as biodiversity conservation) are associated mainly with unmanaged forests. The distinction between managed and unmanaged forests leads to both unconventional and conventional results. All things being equal, a lower timber price results in larger areas of unmanaged forests and smaller areas of managed forests. That is, measures that reduce the producer price for timber (for example, import restrictions in timber-consuming countries and export restrictions in timber-producing countries) are suitable as a second-best policy to reduce the pressure on unmanaged forest frontiers. Most logging in tropical forests occurs in unmanaged forests, so the claim that trade restrictions (such as log export bans) increase deforestation is inconsistent with profit-maximizing land use. A fee on land used for logging is preferable to a tax on timber output,which is far more common but encourages logging waste. Technological interventions that increase the intensity of forestry or alternative land uses are an ambiguous instrument for the conservation of unmanaged forests. If demand elasticity for outputs is high, an intervention that increases the intensity of agriculture, logging, or other land uses increases incentive for conversion of unmanaged forests. The building of roads is particularly harmful to the conservation of unmanaged forests, as it increases incentives for logging and subsequent alternative land uses. Proper pricing of forest lands would increase land prices and lead to market-driven intensification accompanied by forest protection. Such pricing policies would be preferable to a technological intervention that increases land use intensity with ambiguous outcomes for forest protection. If unmanaged forest is converted to agriculture, the effect of lowering the decisionmaker's discount rate depends on the size of timber rents from logging unmanaged forests. If the standing timber has high commercial value, a lower discount rate would slow conversion of unmanaged forests. If the standing timber has no commercial value, logging is an investment for obtaining future benefits of alternate land use. A lower discount rate would stimulate this investment and increase the conversion of unmanaged forests. Also, if unmanaged forests are converted to managed forests, a lower discount rate can increase conversion since profits from managed forestry are higher with a lower discount rate.

Suggested Citation

  • von Amsberg, Joachim & DEC, 1994. "Economic parameters of deforestation," Policy Research Working Paper Series 1350, The World Bank.
  • Handle: RePEc:wbk:wbrwps:1350
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    File URL: http://www-wds.worldbank.org/external/default/WDSContentServer/WDSP/IB/1994/08/01/000009265_3970716141645/Rendered/PDF/multi_page.pdf
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    References listed on IDEAS

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    1. repec:mes:challe:v:34:y:1991:i:6:p:58-60 is not listed on IDEAS
    2. Lyon, Kenneth S., 1981. "Mining of the forest and the time path of the price of timber," Journal of Environmental Economics and Management, Elsevier, vol. 8(4), pages 330-344, December.
    3. Edward Barbier & Michael Rauscher, 1994. "Trade, tropical deforestation and policy interventions," Environmental & Resource Economics, Springer;European Association of Environmental and Resource Economists, vol. 4(1), pages 75-90, February.
    4. Cropper, Maureen & Griffiths, Charles, 1994. "The Interaction of Population Growth and Environmental Quality," American Economic Review, American Economic Association, vol. 84(2), pages 250-254, May.
    Full references (including those not matched with items on IDEAS)

    Citations

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    Cited by:

    1. Goodland, Robert & Daly, Herman, 1996. "If tropical log export bans are so perverse, why are there so many?," Ecological Economics, Elsevier, vol. 18(3), pages 189-196, September.
    2. Angelsen, Arild, 1999. "Agricultural expansion and deforestation: modelling the impact of population, market forces and property rights," Journal of Development Economics, Elsevier, vol. 58(1), pages 185-218, February.
    3. van Soest, D.P., 1998. "Tropical Deforestation : An Economic Perspective," Other publications TiSEM 726d991c-92e0-413e-a0a5-e, Tilburg University, School of Economics and Management.
    4. De Pinto, Alessandro & Nelson, Gerald C., 2004. "A Dynamic Model Of Land Use Change With Spatially Explicit Data," 2004 Annual meeting, August 1-4, Denver, CO 20314, American Agricultural Economics Association (New Name 2008: Agricultural and Applied Economics Association).

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