From: The creation of “Ecosystem Core” hypothesis to explain ecosystem evolution
Ecological zones | Natural emergy input (× 1014 sej/ha/year) | Purchased emergy input (× 1014 sej/ha/year) | Natural emergy input ratio (%) | Purchased emergy input ratio (%) |
---|---|---|---|---|
Huang-Huai-Hai Plain | 5.91 | 36.95 | 14 | 86 |
Northwest of China | 7.20 | 41.98 | 15 | 85 |
Loess Plateau | 8.80 | 39.55 | 18 | 82 |
Southwest of China | 9.13 | 25.24 | 27 | 73 |
Northeast of China | 9.55 | 13.80 | 41 | 59 |