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Table 2 Changes in P value from simple linear models that predict PM2.5 concentration from total green cover, total edge length, grass cover, and forest cover at seven different scales by season from July 11, 2013, through May 31, 2015 in Nanjing, China

From: Do green spaces affect the spatiotemporal changes of PM2.5 in Nanjing?

Radius (km) Spring Summer Autumn Winter Spring Summer Autumn Winter
  Green cover Edge length
0.5 0.058 0.656 0.131 0.921 0.047 0.486 0.164 0.921
1 0.005 0.772 0.092 0.882 0.003 0.441 0.120 0.870
2 0.005 0.274 0.014 0.741 0.006 0.437 0.115 0.933
3 0.039 0.830 0.049 0.890 0.053 0.702 0.133 0.807
4 0.551 0.743 0.218 0.969 0.363 0.776 0.264 0.654
5 0.830 0.567 0.847 0.790 0.405 0.829 0.322 0.602
6 0.842 0.589 0.928 0.674 0.577 0.987 0.331 0.650
  Grassland cover Forest cover
0.5 0.107 0.764 0.589 0.429 0.936 0.914 0.506 0.171
1 0.041 0.972 0.628 0.433 0.028 0.653 0.583 0.560
2 0.058 0.956 0.336 0.705 0.061 0.559 0.066 0.443
3 0.378 0.703 0.232 0.898 0.590 0.776 0.133 0.659
4 0.555 0.835 0.243 0.941 0.958 0.625 0.286 0.940
5 0.511 0.934 0.206 0.902 0.906 0.640 0.326 0.996
6 0.585 0.906 0.151 0.866 0.814 0.510 0.381 0.984
  Green cover (PM2.5 ≥ 75 ug·m−3) Green cover (PM2.5 < 75 ug·m−3)
0.5 0.856 0.531 0.379 0.968 0.003 0.275 0.227 0.336
1 0.445 0.391 0.260 0.992 0.002 0.264 0.493 0.385
2 0.315 0.292 0.176 0.880 0.001 0.174 0.470 0.277
3 0.519 0.252 0.102 0.988 0.011 0.438 0.672 0.253
4 0.704 0.377 0.193 0.784 0.213 0.457 0.390 0.109
5 0.799 0.379 0.163 0.567 0.430 0.554 0.905 0.176
6 0.834 0.394 0.202 0.513 0.793 0.342 0.508 0.319
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