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. 2019 May 2;7:e6869. doi: 10.7717/peerj.6869

Table 2. Index system and transformity of the elements affecting the Dongying-Binzhou urban area.

Type Item Unit Transformity (Sej/unit) Reference
Renewable resources Solar J 1 Odum (1996)
Rainfall (chemical) J 3.05E+04 Odum (2000)
Rainfall (potential) J 4.70E+04 Odum (2000)
Wind energy J 2.45E+03 Odum (2000)
Wave energy J 5.10E+04 Odum (2000)
Tidal energy J 7.39E+04 Odum (1996) and Odum (2000)
River (chemical) J 8.10E+04 Odum (2000)
River (potential) J 4.70E+04 Odum (2000)
Earth cycle J 5.80E+04 Odum (2000)
Livestock products J 3.36E+06 Brown & Herendeen (1996)
NPP J 3.36E+05 Wang et al. (2016)
Aquatic products J 3.36E+06 Brown & Mcclanahan (1992)
Non-renewable resources Topsoil loss J 7.40E+04 Brown & Bardi (2001)
Soil loss J 1.68E+09 Odum (1996)
Raw coal J 6.72E+04 Odum (1996)
Natural gas J 5.88E+04 Romitelli (2000)
Crude oil J 5.04E+04 Odum (1996)
Gasoline J 1.86E+05 Romitelli (2000)
Diesel J 1.86E+05 Odum (1996)
Fuel oil J 6.25E+04 Odum (1996)
Electricity J 1.60E+05 Brandt-Williams (2001)
Waste Water gallon 8.77E+11 Nelson et al. (2001)
Solid J 1.80E+06 Jiang et al. (2009)
Input Foreign investment $ 7.99E+12 Jiang et al. (2009)
Domestic input J 6.72E+04 Jiang et al. (2009)
Imported goods and services $ 7.99E+12 Jiang et al. (2009)
Travel $ 3.81E+12 Odum (1996)
Output Investment output $ 9.71E+12 Odum (2000)
Exported goods and services $ 9.71E+12 Odum (2000)

Notes.

a

NPP: Net Primary Production.

b

J: The unit of joule.

c

$: The unit of dollar.