Multiple equilibria, soil conservation investments and the resilience of agricultural systems

J.M. Antle, J.J. Stoorvogel, R.O. Valdivia

Research output: Contribution to journalArticleAcademicpeer-review

35 Citations (Scopus)

Abstract

This paper provides a new explanation for the persistent land degradation in some parts of the world, despite the availability of seemingly effective soil conservation technologies.We demonstrate that soil conservation technologies may induce agricultural systems to exhibit equilibria characterized by both low and high levels of soil degradation. These two equilibria are separated by a threshold level of soil degradation beyond which a conservation investment will not yield a positive return. Once a parcel of land crosses this productivity threshold, soil degradation becomes economically irreversible (it is not profitable to invest in soil conservation) even though the degradation may be technically reversible. A case study of terracing investments in Peru is used to demonstrate the existence of multiple equilibria under conditions typical of many marginal agricultural areas. These findings help explainwhy attempts to encourage permanent adoption of soil conservation practices often fail, and how more successful policies could be designed.
Original languageEnglish
Pages (from-to)477-492
JournalEnvironment and Development Economics
Volume11
Issue number4
DOIs
Publication statusPublished - 2006

Fingerprint

soil degradation
soil conservation
farming system
resilience
conservation
terracing
land degradation
Peru
productivity
Resilience
Multiple equilibria
Agricultural systems
Soil conservation
Soil degradation
soil

Keywords

  • fertility management
  • irreversibility
  • productivity
  • africa
  • kenya

Cite this

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Multiple equilibria, soil conservation investments and the resilience of agricultural systems. / Antle, J.M.; Stoorvogel, J.J.; Valdivia, R.O.

In: Environment and Development Economics, Vol. 11, No. 4, 2006, p. 477-492.

Research output: Contribution to journalArticleAcademicpeer-review

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AB - This paper provides a new explanation for the persistent land degradation in some parts of the world, despite the availability of seemingly effective soil conservation technologies.We demonstrate that soil conservation technologies may induce agricultural systems to exhibit equilibria characterized by both low and high levels of soil degradation. These two equilibria are separated by a threshold level of soil degradation beyond which a conservation investment will not yield a positive return. Once a parcel of land crosses this productivity threshold, soil degradation becomes economically irreversible (it is not profitable to invest in soil conservation) even though the degradation may be technically reversible. A case study of terracing investments in Peru is used to demonstrate the existence of multiple equilibria under conditions typical of many marginal agricultural areas. These findings help explainwhy attempts to encourage permanent adoption of soil conservation practices often fail, and how more successful policies could be designed.

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KW - productivity

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