| EVI no. | Type |
Subcategory |
Description |
Score |
Range |
Unit |
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| 2 | REI |
Met |
Number of days over the last 5 yr with a maximum wind speed > 20% higher than the average maximum for that month | 3 |
11–20 |
Days |
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| 3 | REI |
Met |
Number of months over the last 5 yr with rainfall > 20% lower than the 30-yr average for that month | 4 |
16–20 |
Months |
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| 4 | REI |
Met |
Number of months over the last 5 yr with rainfall > 20% higher than the 30-yr average for that month | 4 |
16–20 |
Months |
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| 5 | REI |
Met |
Number of days over the last 5 yr with a temperature > 5°C higher than the mean monthly maximum for that month | 1 |
0–10 |
Months |
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| 6 | REI |
Met |
Number of days over the last 5 yr with a temperature > 5°C lower than the mean monthly maximum for that month | 1 |
0–10 |
Days |
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| 7 | REI |
G |
Number of volcanoes with potential for eruption ≥ VEI 4 within 100 km of country land boundary/area of land | 1 |
0 |
volcanoes/km2 |
|||||||||
| 8 | REI |
G |
Earthquakes over the last 5 yr with magnitude ≥ 6.0 and depth ≥ 15 km | 2 |
0–1 |
earthquakes/km2 |
|||||||||
| 9 | REI |
G |
Number of tsunamis or storm surges with a run-up > 2 m above MHWS/100 km coastline since 1900 | 1 |
0 |
tsunamis/km2 |
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| 10 | IRI |
CC |
Total land area | 6 |
100–1000 |
km2 |
|||||||||
| 11 | IRI |
CC |
Length of ocean shoreline or land border divided by total land area | 3 |
0.1–0.5 |
km/km2 |
|||||||||
| 12 | IRI |
CC |
Distance to nearest continent within 10 degrees latitude | 2 |
> 0–500 |
Kilometers |
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| 13 | IRI |
CC |
Altitude range | 5 |
101–1000 |
Meters |
|||||||||
| 14 | IRI |
CC |
Percent of land area < 10 m above sea level | 5 |
5.1–10 |
% |
|||||||||
| 16 | IRI |
CC |
Number of known endemic species | 4 |
31–50 |
spp./km2 |
|||||||||
| 17 | REI |
B |
Number of reported and verified organism outbreaks over last 5 yr per square kilometer of land area | 3 |
11–30 |
outbreaks/km2 |
|||||||||
| 18 | REI |
B |
Total tonnage of freight imported per year per square kilometer of land area | 4 |
201–300 |
t km-2 yr-1 |
|||||||||
| 19 | REI |
B |
Number of introduced species per square kilometer of land area since 1900 | 2 |
> 0–100 |
spp./km2 |
|||||||||
| 22 | REI |
B |
Percentage of natural and regrowth vegetation remaining | 3 |
41–60 |
% |
|||||||||
| 23 | REI |
B |
Tonnage of intensively farmed animal product per square kilometer of land area per year | 2 |
> 0–1 |
t km-2 yr-1 |
|||||||||
| 24 | REI |
B |
Percentage of fisheries stocks overfished | 3 |
> 0–20 |
% |
|||||||||
| 25 | EDI |
A |
Density of people living in coastal settlements with a city center within 20 km of the coast | 7 |
> 200 |
persons/km2 |
|||||||||
| 26 | REI |
A |
Total human population density | 6 |
101–200 |
persons/km2 |
|||||||||
| 27 | REI |
A |
Annual population growth rate averaged over the last 5 yr | 4 |
0.51–1 |
% |
|||||||||
| 28 | REI |
A |
Net percentage of land area changed by removal of natural vegetation during the last 5 yr | 7 |
> 5 |
% |
|||||||||
| 29 | REI |
A |
Annual number of international tourists times average days stayed divided by 365 divided by square kilometers | 1 |
0–10 |
persons km-2 d-1 |
|||||||||
| 30 | REI |
A |
Litres of untreated industrial and domestic wastewater discharged per square kilometer of land area per day | 5 |
4001–6000 |
l km-2 d-1 |
|||||||||
| 31 | REI |
A |
Total tonnage of generated and net imported toxic, hazardous, and municipal waste per square kilometer of land area per year | 6 |
51–60 |
t km-2 yr-1 |
|||||||||
| 33 | REI |
A |
Number of spills of oil and hazardous substances > 1000 L during the last 5 yr on land, in rivers, or within territorial waters divided by land area (*1000) | 1 |
0 |
spills/km2 |
|||||||||
| 34 | REI |
A |
Number of nuclear, chemical, and other major industrial facilities that would cause significant damage | 1 |
0 |
facilities/km2 |
|||||||||
| 35 | REI |
A |
Number of vehicles | 1 |
0–5 |
vehicles/km2 |
|||||||||
| 36 | REI |
A |
Maximum 24-hr sulfur dioxide concentration | 1 |
... |
µg/m3 |
|||||||||
| 37 | REI |
A |
Metric tons of NPK fertilizers used per square kilometer of agricultural land area per year (*1000) | 1 |
0–20 |
t km-2 yr-1 |
|||||||||
| 38 | REI |
A |
Metric tons of pesticides and fertilizers used per square kilometer of agricultural land area per year (*1000) | 3 |
41–60 |
t km-2 yr-1 |
|||||||||
| 40 | REI |
A |
Percentage of land area degraded since 1950 | 7 |
> 10 |
% |
|||||||||
| 41 | REI |
A |
Mean rate of water usage per capita per day | 7 |
> 200 |
t person-1 d-1 |
|||||||||
| 43 | REI |
A |
Percentage of land area affected by mining and quarrying | 2 |
> 0–1 |
% |
|||||||||
| 44 | REI |
A |
Percentage of terrestrial zone set aside as reserves | 2 |
11–20 |
% |
|||||||||
| 45 | REI |
A |
Percentage of marine zone set aside as reserves | 5 |
0.5–1 |
% |
|||||||||
| 46 | REI |
A |
Number of wars or civil uprisings over the last 50 yr within the territory | 1 |
0 |
Years |
|||||||||
| 47 | REI |
A |
Percentage of population with access to safe sanitation | 1 |
No levels |
No units |
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