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Spatial Distribution and Conservation Prioritization of Medicinal Gymnosperms in China Using an Optimal Set-Cover

Lisi Hai1, Xinyi Wang1, Yuchang Yang2

  • 1Jiangxi University of Chinese Medicine Nanchang China.

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|May 4, 2026
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Summary

This study maps China

Keywords:
conservation gapdistribution patternmedicinal gymnospermsnature reserves

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Area of Science:

  • Botany
  • Conservation Biology
  • Biogeography

Background:

  • Medicinal gymnosperms are vital resources.
  • Understanding their distribution is crucial for conservation.
  • China harbors significant medicinal gymnosperm diversity.

Purpose of the Study:

  • To map geographical distribution patterns and identify hotspots of medicinal gymnosperms in China.
  • To provide a scientific basis for conservation strategies.
  • To assess conservation gaps in existing protected areas.

Main Methods:

  • Compiled 17,999 occurrence records for 148 species.
  • Analyzed distributions across grid cells.
  • Identified priority conservation areas using an optimal algorithm and compared with the Dobson algorithm.
  • Assessed conservation gaps by overlaying priority grids with national reserves and parks.

Main Results:

  • Medicinal gymnosperms exhibit a "more in the south, less in the north" distribution, concentrated in mountains and provincial borders.
  • Hotspots identified in the Hengduan Mountains (all/endemic) and northern Guangxi (threatened/protected).
  • Optimal algorithm identified 41 priority grids, outperforming Dobson algorithm; 8 conservation gap grids found, including Hengduan Mountains.
  • Current reserves inadequately protect these species.

Conclusions:

  • National reserves are insufficient for comprehensive medicinal gymnosperm protection.
  • Targeted conservation measures are essential based on identified gaps.
  • The optimal algorithm is an efficient tool for conservation planning.