A hybrid material flow analysis for quantifying multilevel anthropogenic resources

Kuang Ly Cheng, Shu Chien Hsu, Cathy C.W. Hung, Pi Cheng Chen, Hwong wen Ma

Research output: Journal article publicationJournal articleAcademic researchpeer-review

5 Citations (Scopus)


This study develops a hybrid material flow analysis (HMFA) method to evaluate the annual additional quantity of material stock, known as net additions to stock (NAS) at both micro- and macro-levels through analyzing the fixed capital formation (FCF) and total supply in input-output tables (IOTs). HMFA turns NAS from a balance indicator in the top-down approach to an indicator with meaningful value in terms of urban ore evaluation. To verify the validity of HMFA, this study compares the developed HMFA with a top-down approach and a bottom-up approach through assessing the NAS of Taiwan and Germany. The quantity of NAS estimated by HMFA is considered as a more conservative upper bound than that by the top-down approach, while underestimation often occurs with a bottom-up approach. HMFA has been proven as an efficient and rational evaluation method which overcomes a key limitation in assessing micro-level material stock by a top-down approach, and solves the data demanding problem of the bottom-up approach for quantifying material stock.

Original languageEnglish
Pages (from-to)1456-1469
Number of pages14
JournalJournal of Industrial Ecology
Issue number6
Publication statusPublished - 1 Dec 2019


  • anthropogenic resources
  • circular economy
  • hybrid material flow analysis
  • multilevel
  • net additions to stock
  • urban mining

ASJC Scopus subject areas

  • Environmental Science(all)
  • Social Sciences(all)


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