Table 5 Changes of ecological security in study area from 2005 to 2022
Year | Ecological Pressure Index | Ecological Security Grade | Characterization State | Ecological Security Index | ED and ES |
|---|---|---|---|---|---|
2005 | 1.069 |  |  | 0.483 | −9085.035 |
2006 | 1.139 | 0.467 | −18,069.154 | ||
2007 | 1.143 | 0.467 | −17,572.464 | ||
2008 | 1.153 | 0.464 | −17,930.668 | ||
2009 | 1.149 | 0.465 | −18,595.060 | ||
2010 | 1.150 | 0.465 | −18,027.132 | ||
2011 | 1.149 | 0.465 | −17,090.910 | ||
2012 | 1.148 | 0.466 | −16,829.328 | ||
2013 | 1.145 | 4 | Moderately risky | 0.466 | −16,690.852 |
2014 | 1.123 |  |  | 0.471 | −10,182.715 |
2015 | 1.121 | 0.471 | −9634.598 | ||
2016 | 1.122 | 0.471 | −8534.940 | ||
2017 | 1.119 | 0.472 | −8260.335 | ||
2018 | 1.063 | 0.485 | −4184.010 | ||
2019 | 1.131 | 0.469 | −8453.871 | ||
2020 | 1.127 | 0.470 | −8518.567 | ||
2021 | 1.128 | 0.470 | −9018.633 | ||
2022 | 0.967 | 3 | Moderately safe | 0.508 | 2432.083 |
