Material flow analysis and characteristics of multiple-source organic solid wastes from a perspective of ecological network analysis: A case study in Hefei, China.

The direct material output generally showed a decreasing trend and fell to 9.95 × 10 6 Mt in 2020.

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The total direct material input (Imp and DE in three sectors) in Hefei showed a trend of first increasing and then decreasing, reaching 1.456 × 10 7 Mt in 2020 (note: 1 Mt = 10 3 kg, international system of units (SI), and the agricultural sector accounted for the largest amount of direct material input.

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The total material input of manufacturing industry in Hefei presented two stages: there was an increasing trend from 2013 to 2017 and the total inputs increased by 14.7% compared to 2013, then there was a decrease in 2018 and followed by an increasing trend.

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