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[Ancientness and maturity: two complementary qualities of forest ecosystems].

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Summary

Forest ancientness and maturity are key naturalness indicators, often confused. This study clarifies terminology and proposes thresholds, finding 29% of French forests are ancient woodlands.

Keywords:
AnciennetéAncientnessDynamicDynamiqueMaturityMaturitéNaturality of forestNaturalité des forêts

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Area of Science:

  • Ecology
  • Forest Science
  • Environmental Science

Background:

  • Forest ecosystems possess qualities of ancientness and maturity, crucial components of naturalness.
  • These qualities are significantly influenced by human impact and are frequently subject to terminological confusion.
  • Clarifying these terms is essential for accurate forest ecosystem assessment.

Purpose of the Study:

  • To synthesize international literature and propose an adapted French terminology for forest ancientness and maturity.
  • To explain the concepts of ancientness and maturity concerning biodiversity and soil characteristics.
  • To establish potential thresholds for defining forest ancientness and maturity.

Main Methods:

  • Literature synthesis and terminology adaptation.
  • Explanation of ancientness and maturity concepts for biodiversity and soil.
  • Analysis of French forest data to assess ancientness and maturity.

Main Results:

  • A proposed French terminology for forest ancientness and maturity based on international literature.
  • Identification of potential thresholds for defining these forest qualities.
  • Analysis revealed approximately 29% of French forests qualify as ancient woodland.
  • Less than 3% of even-aged forests exceed typical harvesting age.

Conclusions:

  • The study provides a clearer understanding and terminology for forest ancientness and maturity.
  • Established thresholds offer a basis for evaluating forest naturalness and human impact.
  • A significant portion of French forests exhibits ancient woodland characteristics, while mature even-aged forests are scarce.