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Developing interpretive structural modeling based on factor analysis for the water-energy-food nexus conundrum.

Guijun Li1, Daohan Huang2, Chengshuang Sun3

  • 1School of Management Science and Engineering, Central University of Finance and Economics, Beijing 100081, China.

The Science of the Total Environment
|September 22, 2018
PubMed
Summary

This study identifies and analyzes factors within Beijing's urban water-energy-food nexus. The energy system is central, with population and vehicle factors also significantly influencing governance for sustainable development.

Keywords:
Hierarchy structureISMSustainable developmentWater-energy-food nexus

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Area of Science:

  • Environmental Science
  • Urban Planning
  • Systems Analysis

Background:

  • The water-energy-food (WEF) nexus is complex, with factors varying by time, location, and scale.
  • The hierarchical relationships between WEF nexus factors have been largely overlooked.
  • Understanding these interdependencies is crucial for sustainable urban development.

Purpose of the Study:

  • To identify and analyze interwoven factors within an urban WEF nexus.
  • To establish a hierarchical structure of these factors using Interpretive Structural Modeling (ISM).
  • To provide insights for policy-making and decision-making in urban WEF nexus governance.

Main Methods:

  • Interpretive Structural Modeling (ISM) was employed for factor identification and hierarchical analysis.
  • 87 representative factors within the Beijing urban WEF nexus were identified and classified.
  • Factor analysis was conducted to determine the relative importance and influence of identified factors.

Main Results:

  • A hierarchical structure of 87 factors in the Beijing urban WEF nexus was established using ISM.
  • The energy system was identified as the core nexus, critical for promoting the WEF nexus.
  • Peripheral factors, such as population and vehicle volume, significantly influence nexus governance.

Conclusions:

  • Integrated policies addressing core and peripheral nexuses are vital for securing WEF in Beijing.
  • The established nexus structure offers valuable insights for quantification and decision-making.
  • This research highlights the importance of understanding factor hierarchies for effective WEF nexus management.