Table 4 The area percentage of NPP significantly correlated with growing season metrics (p < 0.05) in different land cover types and different regions in China during 1981–2016 (units: %)
Land cover types or regions | SOS | EOS | LOS | |||
|---|---|---|---|---|---|---|
− | + | − | + | − | + | |
Land cover types | ||||||
Forestland and Grassland | 21.95 | 6.29 | 7.53 | 16.25 | 7.07 | 22.83 |
Forestland | 20.64 | 5.60 | 8.28 | 13.54 | 6.83 | 20.17 |
Grassland | 22.75 | 6.71 | 7.07 | 17.90 | 7.23 | 24.56 |
Regions | ||||||
Northwest China | 22.18 | 5.53 | 3.60 | 24.52 | 4.97 | 27.28 |
North China | 31.38 | 5.92 | 8.52 | 19.65 | 7.80 | 32.16 |
Northeast China | 11.36 | 6.04 | 7.27 | 5.90 | 6.99 | 10.13 |
Southwest China | 25.82 | 6.15 | 7.43 | 20.82 | 5.95 | 27.01 |
Mid-lower Yangtze River valley | 22.28 | 10.61 | 11.30 | 20.95 | 11.44 | 30.37 |
South China | 39.53 | 19.60 | 28.80 | 38.35 | 22.61 | 51.11 |