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Global forest fragmentation change from 2000 to 2020.

Jun Ma1, Jiawei Li2, Wanben Wu2

  • 1Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering, Coastal Ecosystems Research Station of the Yangtze River Estuary, Institute of Biodiversty Science, School of Life Sciences, Fudan University, #2005 Songhu Road, Shanghai, 200438, China. ma_jun@fudan.edu.cn.

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Global forest fragmentation is worsening in the tropics, despite overall decreases elsewhere. Urgent action is needed to curb deforestation and enhance forest connectivity, especially in vulnerable tropical regions.

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Area of Science:

  • Environmental Science
  • Ecology
  • Remote Sensing

Background:

  • Global forest fragmentation quantification is crucial for conservation policies.
  • Previous studies often overlooked dynamic landscape changes, focusing on static patterns.

Purpose of the Study:

  • To map the global distribution and temporal changes of forest fragments from 2000 to 2020.
  • To identify distinct modes of forest fragmentation indicating recovery or degradation.

Main Methods:

  • Utilized remote sensing data to map forest fragments globally.
  • Analyzed temporal changes in forest fragmentation patterns over two decades (2000-2020).

Main Results:

  • Tropical regions, while relatively intact, experienced the most severe fragmentation.
  • 75.1% of global forests showed decreased fragmentation; temperate and subtropical areas saw declines.
  • Identified eight distinct fragmentation modes reflecting different landscape states.

Conclusions:

  • Tropical forest fragmentation requires immediate attention and targeted conservation efforts.
  • Increasing connectivity among forest fragments is vital, particularly in tropical zones.
  • Findings provide critical data for global forest protection, restoration, and reforestation strategies.