Table 5 Statistics of HQ grades and areas in HRB from 2000 to 2023.
From: Spatio-temporal evolution in habitat quality and its driving factors in Han River Basin, China
HQ class | 2000 | 2005 | 2010 | 2015 | 2020 | 2023 | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Area/Ten thousand km2 | Proportion/% | Area/Ten thousand km2 | Proportion/% | Area/Ten thousand km2 | Proportion/% | Area/Ten thousand km2 | Proportion/% | Area/Ten thousand km2 | Proportion/% | Area/Ten thousand km2 | Proportion/% | |
Low [0–0.2) | 5.35 | 33.65 | 5.39 | 33.89 | 5.48 | 34.47 | 5.66 | 35.60 | 5.67 | 35.67 | 5.69 | 35.79 |
Lower [0.2–0.4) | 2.44 | 15.36 | 2.44 | 15.33 | 2.42 | 15.23 | 2.40 | 15.08 | 2.33 | 14.65 | 2.32 | 14.60 |
Medium [0.4–0.6) | 1.86 | 11.67 | 1.85 | 11.65 | 1.74 | 10.94 | 1.74 | 10.95 | 1.72 | 10.82 | 1.69 | 10.63 |
Higher [0.6–0.8) | 2.69 | 16.90 | 2.67 | 16.82 | 2.73 | 17.17 | 2.69 | 16.92 | 2.70 | 16.99 | 2.72 | 17.12 |
High [0.8–1) | 3.56 | 22.41 | 3.55 | 22.31 | 3.53 | 22.20 | 3.41 | 21.45 | 3.48 | 21.86 | 3.48 | 21.87 |
Average HQ | 0.461 | 0.459 | 0.456 | 0.446 | 0.448 | 0.453 | ||||||
