Biodiversity and Conservation

, Volume 19, Issue 4, pp 1153–1174

Eco-floristic sectors and deforestation threats in Sumatra: identifying new conservation area network priorities for ecosystem-based land use planning

  • Yves Laumonier
  • Yumiko Uryu
  • Michael Stüwe
  • Arif Budiman
  • Budi Setiabudi
  • Oki Hadian
Original Paper

DOI: 10.1007/s10531-010-9784-2

Cite this article as:
Laumonier, Y., Uryu, Y., Stüwe, M. et al. Biodivers Conserv (2010) 19: 1153. doi:10.1007/s10531-010-9784-2

Abstract

Biogeographical studies are a necessary step in establishing conservation area networks. Determining the ecological factors influencing vegetation is also a basic principle for hierarchical ecological classifications and a necessary prerequisite for ecosystem-based land use planning. Eco-floristic sectors (EFS) have already been identified for the Indonesian island of Sumatra, combining both approaches, dividing it into 38 EFSs representing unique ecosystems in terms of tree flora and environment (Laumonier 1997). The impact of deforestation on individual EFSs has been highly varied and in some cases extreme. We assigned one of five ‘extinction risk categories’ to each EFS based on the percentage of forest lost between 1985 and 2007. Eighty-five percent of all forest loss (10.2 million ha) occurred in the eastern peneplain, western lowland regions and swamps. In 2007, only 29% of forests were protected by conservation areas, only nine of the 38 EFS had more than 50% of their remaining forest cover protected. 38% of remaining forest was “critically endangered”, “endangered” or “vulnerable” EFSs (5 million ha) but only 1 million ha (20%) were protected. Sumatra’s existing network of conservation areas does not adequately represent the island’s ecosystems. Priorities for a new conservation area network can be formulated for integration into Sumatra’s new land use plans at provincial and district level. Decision makers can now use EFSs to locate new conservation areas so they represent and maintain the whole range of the island’s diversity.

Keywords

Eco-floristic zoning Conservation assessment Deforestation Threat Sumatra 

Copyright information

© Springer Science+Business Media B.V. 2010

Authors and Affiliations

  • Yves Laumonier
    • 1
    • 5
  • Yumiko Uryu
    • 2
  • Michael Stüwe
    • 2
  • Arif Budiman
    • 3
  • Budi Setiabudi
    • 4
  • Oki Hadian
    • 3
  1. 1.Environment and Societies Department, UR 36Center International for Research on Agronomy and Development (CIRAD)MontpellierFrance
  2. 2.WWF USWashingtonUSA
  3. 3.WWF-IndonesiaKawasan Mega Kuningan JakartaIndonesia
  4. 4.BIOTROP-SEAMEO Center for Tropical BiologyBogorIndonesia
  5. 5.Center International for Forestry Research (CIFOR)BogorIndonesia

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