Tonga

GDP (PPP) per capita (2022): 7,016.37 Int. Dollar Population (2022): 106,858 HDI (2022): 0.74
ND-GAIN Country Index rank 140
Score: 41.2
Vulnerability 0.605
Readiness 0.430

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 7th most vulnerable country and the 90th 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 21 22
Ranking
153
150
151
151
153
148
156
151
160
163
165
160
151
155
146
147
143
149
144
143
143
147
143
142
144
137
138
140
Denotes worst scores
Indicator 2003 to 2022 Score
Vulnerability
0.605
Food
0.559
Projected change of cereal yields
0.892
Projected population change
0.202
Food import dependency
0.431
Rural population
0.828
Agriculture capacity
0.954
Child malnutrition
0.045
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
0.715
Health
0.651
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
0.821
Access to improved sanitation facilities
0.687
Ecosystem Services
0.688
Projected change of biome distribution
-
Projected change of marine biodiversity
0.886
Natural capital dependency
1.000
Ecological footprint
0.304
Protected biome
0.446
Engagement in international environmental conventions
0.806
Human Habitat
0.500
Projected change of warm periods
0.194
Projected change of flood hazard
0.731
Urban concentration
0.172
Age dependency ratio
0.669
Quality of trade and transport infrastructure
-
Paved roads
0.736
Infrastructure
0.625
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
1.000
Electricity access
0
Disaster preparedness
0.500