Tonga

GDP (PPP) per capita (2018): 6,408.24 Int. Dollar Population (2018): 103,197 HDI (2018): 0.72
ND-GAIN Country Index rank 121
Score: 42.3
Vulnerability 0.568
Readiness 0.414

The high vulnerability score and high readiness score of Tonga places it in the upper-right quadrant of the ND-GAIN Matrix. It is on the road to responding effectively to climate change, but the adaptation needs and urgency to act are greater. Tonga is the 16th most vulnerable country and the 93rd most ready country.

ND-GAIN Ranking since 1995

Year 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18
Ranking
116
115
116
118
123
126
133
132
134
128
129
130
128
129
123
118
116
118
120
122
122
121
122
121
Denotes worst scores
Indicator 1999 to 2018 Score
Vulnerability
0.568
Food
0.585
Projected change of cereal yields
0.892
Projected population change
0.202
Food import dependency
0.432
Rural population
0.828
Agriculture capacity
0.955
Child malnutrition
0.200
Water
-
Projected change of annual runoff
-
Projected change of annual groundwater recharge
0.249
Fresh water withdrawal rate
-
Water dependency ratio
0
Dam capacity
-
Access to reliable drinking water
-
Health
0.566
Projected change of deaths from climate change induced diseases
0.091
Projected change in vector-borne diseases
0.658
Dependency on external resource for health services
0.640
Slum population
-
Medical staff
0.877
Access to improved sanitation facilities
-
Ecosystem Services
0.683
Projected change of biome distribution
-
Projected change of marine biodiversity
0.886
Natural capital dependency
1.000
Ecological footprint
0.280
Protected biome
0.446
Engagement in international environmental conventions
0.806
Human Habitat
0.506
Projected change of warm periods
0.194
Projected change of flood hazard
0.731
Urban concentration
0.172
Age dependency ratio
0.698
Quality of trade and transport infrastructure
-
Paved roads
0.736
Infrastructure
0.501
Projected change of hydropower generation capacity
-
Projected change of sea level rise impacts
1.000
Dependency on imported energy
-
Population living under 5m above sea level
0.433
Electricity access
0.020
Disaster preparedness
0.550