Table 2 Changes in area proportion of each RSEI level from 1990 to 2020.
From: The dynamic changes of eco-environmental quality in Dongting lake wetland during 1990–2020, China
Level | 1990 | 1994 | 2001 | 2004 | 2008 | 2013 | 2016 | 2020 |
|---|---|---|---|---|---|---|---|---|
Poor | 0.00% | 0.09% | 0.24% | 1.43% | 2.88% | 2.68% | 4.85% | 2.25% |
Fair | 3.64% | 21.76% | 31.02% | 25.25% | 21.34% | 19.43% | 27.75% | 34.36% |
Moderate | 69.23% | 50.95% | 62.85% | 43.52% | 61.53% | 55.58% | 41.88% | 35.33% |
Good | 27.13% | 26.83% | 5.82% | 29.45% | 13.84% | 21.36% | 18.88% | 22.39% |
Excellent | 0.00% | 0.36% | 0.07% | 0.35% | 0.41% | 0.95% | 6.64% | 5.67% |
MFP% | 72.87% | 72.81% | 94.11% | 70.20% | 85.75% | 77.69% | 74.48% | 71.94% |
EG% | 27.13% | 27.19% | 5.89% | 29.80% | 14.25% | 22.31% | 25.52% | 28.06% |
