Table 6. Distribution of significant trends in fire weather season length and long fire weather season affected area by continent and biome.
Continent | Biome | Min | 1st quarter | Median | 3rd quarter | Max | N |
---|---|---|---|---|---|---|---|
Africa | Tropical forest | −1.33 | −0.116 | 0.287 | 0.641 | 2.120 | 147 |
Tropical and subtropical grasslands, savannas and shrublands | −1.790 | 0.668 | 0.597 | 1.11 | 2.22 | 853 | |
Temperate and montane grasslands, savannas and shrublands | −0.75 | −0.333 | 0.254 | 0.448 | 1.76 | 30 | |
Mediterranean forests, woodlands and scrub | 0.205 | 0.306 | 0.360 | 0.465 | 0.775 | 29 | |
Xeric shrublands | −1.55 | −0.867 | 0.477 | 1.10 | 1.98 | 141 | |
Eurasia | Tropical forest | −1.04 | −0.295 | 0.0417 | 0.114 | 1.46 | 335 |
Temperate broadleaf forests | 0.257 | 0.106 | 0.161 | 0.271 | 2.02 | 642 | |
Temperate conifer forests | −0.318 | 0.0767 | 0.114 | 0.248 | 2.14 | 158 | |
Tropical and subtropical grasslands, savannas and shrublands | −0.578 | 0.059 | 0.0715 | 0.111 | 0.179 | 5 | |
Temperate and montane grasslands, savannas and shrublands | −1.14 | 0.0608 | 0.182 | 0.2590 | 1.62 | 659 | |
Boreal forests/taiga and tundra | −0.496 | −0.136 | −0.0519 | 0.063 | 0.251 | 711 | |
Mediterranean forests, woodlands and scrub | −0.285 | 0.336 | 0.414 | 0.542 | 0.83 | 123 | |
Xeric shrublands | −1.22 | −0.252 | 0.363 | 0.665 | 2.15 | 563 | |
Australia/New Zealand | Tropical forest | −0.537 | −0.523 | −0.429 | −0.172 | 1.67 | 4 |
Temperate broadleaf forests | 0.0932 | 0.108 | 0.147 | 0.153 | 0.301 | 25 | |
Tropical and subtropical grasslands, savannas and shrublands | −1.34 | −0.965 | −0.633 | 0.49 | 0.968 | 51 | |
Temperate and montane grasslands, savannas and shrublands | 0.0428 | 0.106 | 0.111 | 0.13 | 0.13 | 35 | |
Mediterranean forests, woodlands and scrub | −0.559 | −0.278 | 0.181 | 0.315 | 0.341 | 9 | |
Xeric shrublands | −1.09 | −0.703 | −0.548 | −0.291 | 0.439 | 62 | |
North America | Tropical forest | −0.364 | 0.391 | 0.719 | 1.28 | 1.97 | 112 |
Temperate broadleaf forests | −0.264 | 0.0492 | 0.105 | 0.17 | 0.228 | 66 | |
Temperate conifer forests | −0.222 | 0.0315 | 0.246 | 0.441 | 1.03 | 288 | |
Tropical and subtropical grasslands, savannas and shrublands | 0.119 | 0.126 | 0.133 | 0.141 | 0.148 | 2 | |
Temperate and montane grasslands, savannas and shrublands | 0.0469 | 0.261 | 0.322 | 0.464 | 0.813 | 120 | |
Boreal forests/taiga and tundra | −0.302 | −0.10 | 0.0399 | 0.0731 | 0.264 | 809 | |
Mediterranean forests, woodlands and scrub | −0.823 | 0.624 | 0.761 | 0.893 | 1.410 | 16 | |
Xeric shrublands | 0.162 | 0.433 | 0.56 | 0.681 | 1.210 | 287 | |
South America | Tropical forest | −1.76 | −0.0863 | 0.252 | 0.731 | 2.04 | 706 |
Temperate broadleaf forests | −2.53 | −0.557 | 0.0288 | 0.0957 | 0.275 | 36 | |
Tropical and subtropical grasslands, savannas and shrublands | −0.887 | 0.62 | 0.947 | 1.30 | 2.39 | 320 | |
Temperate and montane grasslands, savannas and shrublands | −2.64 | −0.829 | −0.375 | 0.302 | 0.966 | 258 | |
Xeric shrublands | −2.660 | −0.588 | 1.440 | 1.650 | 2.070 | 112 |
Statistical summaries of all significant, pixel-based fire weather season length linear trends from 1979 to 2013 by biome for Africa and Eurasia. All values are trend coefficients in days per year, representing an increase or decrease in the fire weather season length. N represents the number of significant pixels in each continent × biome. Slopes were estimated using the Theil–Sen non-parametric trend slope estimator.