Research Article
The Evaluation of Groundwater Resources Value of Beijing Based on Emergy Theory
Table 1
The Summary of the main emergy indexes about the water system of Beijing (unit: 1020 sej).
| | Emergy indexes | 2008 | 2009 | 2010 | 2011 | 2012 |
| | 459 | 324.2 | 378.12 | 397.98 | 508.66 | | 1202.36 | 1287 | 1318.71 | 1107.09 | 976.8 | | Renewable environmental resources products | 712.77 | 727.47 | 711.05 | 698.29 | 687.95 | | 8138.62 | 8618.9 | 11371.8 | 14863.4 | 17508.9 | | EMEX | 3918.5 | 3998.3 | 5528.98 | 7296.26 | 8367.11 | | 5881.48 | 6231.8 | 7539.61 | 9072.26 | 10627.2 | | 75465.1 | 83250 | 89993.4 | 96928.6 | 96935.7 | | Annual water emergy consumption | 333.65 | 364.63 | 383.55 | 351.5 | 385.67 | | Water from external EMWE | 1.83 | 6.12 | 6.72 | 8.03 | 9.58 | | Water from local EMWL | 284.06 | 310.52 | 324.03 | 303.37 | 332.97 | | Emergy/$ EDR (1011 sej/$) | 46.29 | 44.31 | 48.51 | 51.35 | 59.84 | | Emergy/RMB EDR (1011 sej/¥) | 6.76 | 6.49 | 7.26 | 8.11 | 9.51 |
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The data of Table 1 have been summarized. The regional data reference is from the following books: [25, 26].
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