Tonga

GDP (PPP) per capita (2020): 6,695.14 Int. Dollar Population (2020): 105,697 HDI (2020): 0.72
ND-GAIN Country Index rank 128
Score: 41.6
Vulnerability 0.579
Readiness 0.410

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 14th most vulnerable country and the 95th 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 19 20
Ranking
138
137
140
140
141
139
143
142
145
147
146
139
137
137
127
133
124
129
126
123
122
126
125
122
126
128
Denotes worst scores
Indicator 2001 to 2020 Score
Vulnerability
0.579
Food
0.557
Projected change of cereal yields
0.892
Projected population change
0.202
Food import dependency
0.431
Rural population
0.829
Agriculture capacity
0.940
Child malnutrition
0.050
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
0.722
Health
0.654
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
1.000
Slum population
-
Medical staff
0.843
Access to improved sanitation facilities
0.676
Ecosystem Services
0.683
Projected change of biome distribution
-
Projected change of marine biodiversity
0.886
Natural capital dependency
1.000
Ecological footprint
0.276
Protected biome
0.446
Engagement in international environmental conventions
0.806
Human Habitat
0.503
Projected change of warm periods
0.194
Projected change of flood hazard
0.731
Urban concentration
0.171
Age dependency ratio
0.681
Quality of trade and transport infrastructure
-
Paved roads
0.736
Infrastructure
0.496
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
0.435
Electricity access
0
Disaster preparedness
0.550