Table 5 Calculation results of time-averaged coupling coordination degree of the three major systems in the Yellow River Basin, 2010–2020.
vintages | Coupling C-value | Coordination index T-value | D-value of coupling coordination | Level of coordination | Degree of coupling coordination |
|---|---|---|---|---|---|
2010 | 0.554 | 0.699 | 0.622 | 7 | Primary coordination |
2011 | 0.564 | 0.724 | 0.639 | 7 | Primary coordination |
2012 | 0.568 | 0.651 | 0.609 | 7 | Primary coordination |
2013 | 0.570 | 0.562 | 0.566 | 6 | Sue for coordination |
2014 | 0.570 | 0.457 | 0.510 | 6 | Sue for coordination |
2015 | 0.577 | 0.434 | 0.500 | 6 | Sue for coordination |
2016 | 0.546 | 0.472 | 0.508 | 6 | Sue for coordination |
2017 | 0.562 | 0.389 | 0.468 | 5 | On the verge of becoming dysfunctional |
2018 | 0.468 | 0.305 | 0.377 | 4 | Mild disorder |
2019 | 0.362 | 0.263 | 0.309 | 4 | Mild disorder |
2020 | 0.268 | 0.289 | 0.278 | 3 | Moderate disorder |
