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Standardized method for material flow data collection at city level.

Han Gao1, Xin Tian1,2, Yan Zhang1,2

  • 1School of Environment, Beijing Normal University, Beijing 100875, China.

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Summary
This summary is machine-generated.

A standardized method for collecting material flow data in Chinese cities was developed to improve circular economy and urban metabolism assessments. This approach consolidates scattered data for accurate analysis of material inputs, recycling, and waste.

Keywords:
Circular economyEcological network analysisIndicatorsPerformance evaluation

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Area of Science:

  • Environmental Science
  • Urban Planning
  • Resource Management

Background:

  • Evaluating circular economy performance and urban material metabolism requires accurate material flow data.
  • Chinese city-level statistical data are fragmented across various sources, leading to inconsistencies and errors.
  • Existing data collection methods lack standardization, hindering reliable analysis.

Purpose of the Study:

  • To establish a standardized data collection and accounting method for material flow analysis in Chinese cities.
  • To provide a consistent framework for assessing urban metabolism and circular economy performance.
  • To enable more accurate intersectoral material flow estimations for ecological network analysis.

Main Methods:

  • Developed a three-part material flow accounting system: direct material input, material recycling, and waste disposal.
  • Included four material categories: fossil fuels, biomass, metal minerals, and non-metallic minerals (155 items).
  • Integrated data from China City Statistical Yearbook, provincial, and municipal yearbooks into a standardized Excel spreadsheet with conversion equations.

Main Results:

  • A standardized method for collecting and accounting material flow data for Chinese cities has been established.
  • The method facilitates the conversion of dispersed statistical data into usable material flow information.
  • The approach allows for the estimation of intersectoral material flows based on material sources and usage.

Conclusions:

  • The standardized method enhances the reliability and comparability of material flow data for urban analysis.
  • This framework supports robust evaluations of circular economy performance and urban metabolism.
  • The methodology provides a foundation for detailed ecological network analysis at the city level.