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Basin ecological function zoning based on gross ecosystem product.

Xiaoyang Li1,2, Xiangfang Meng2, Zhaohua Lu2,3

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Gross ecosystem product (GEP) in the Yellow River and Yangtze River basins significantly increased from 2005 to 2020. This study highlights GEP

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Area of Science:

  • Ecological economics
  • Environmental science
  • Ecosystem assessment

Background:

  • Coordinating economic development and ecological protection requires scientific zoning.
  • Gross Ecosystem Product (GEP) accounting provides a framework for assessing ecosystem service value.
  • Previous studies have not comprehensively integrated GEP accounting with ecological function zoning.

Purpose of the Study:

  • To establish a comprehensive GEP accounting index system for terrestrial ecosystems.
  • To conduct ecological function zoning using principal component analysis based on GEP.
  • To analyze the spatiotemporal trends of GEP and its components in the Yellow River Basin (YRB) and Yangtze River Basin (YZRB).

Main Methods:

  • Development of a comprehensive GEP accounting index system for terrestrial ecosystems.
  • Application of principal component analysis for ecological function zoning.
  • Spatiotemporal analysis of GEP, Ecosystem Product Value (EPV), Ecosystem Regulation Value (ERV), and Ecosystem Conservation Value (ECV) from 2005 to 2020.

Main Results:

  • GEP in the YRB increased from 14,201.29 to 28,702.22 billion yuan; in the YZRB, it rose from 23,731.23 to 48,866.62 billion yuan (2005-2020).
  • EPV, ERV, and ECV generally showed an upward trend across both basins.
  • ECV exhibited a rapid increase in the YRB's upstream and the YZRB's midstream regions.

Conclusions:

  • GEP accounting scientifically reflects the value of ecosystem service functions.
  • The findings provide a basis for improving ecological compensation mechanisms.
  • This approach guides the integration of natural capital into ecological industrialization.