How many years of comparable data are there for Hong Kong and Vietnam?

30 years are reported by both, from 1990 to 2019.

Where does this data come from?

Statizoid (derived), published as Emission Totals - Emissions (N2O) - AFOLU, per square kilometre. Statizoid refreshes it automatically from the source and publishes the full history for both places.

Hong Kong vs Vietnam: Emission Totals - Emissions (N2O) - AFOLU, per square kilometre

Hong Kong

0.0002 units per square kilometre

in 2019

Vietnam

0.0002 units per square kilometre

in 2019

Hong Kong rank

17th

Vietnam rank

16th

Emission Totals - Emissions (N2O) - AFOLU, per square kilometre over time

Hong Kong
Vietnam

How they compare

Vietnam currently reports 0.0002 units per square kilometre against 0.0002 units per square kilometre in Hong Kong, a difference of 0 units per square kilometre.

The two have swapped places 3 times across 30 shared years of data; in 1990 it was Hong Kong ahead.

Hong Kong ranks 17th and Vietnam ranks 16th of 206 countries.

Vietnam has averaged higher in every one of the 3 decades both report.

Head to head by decade

Decade	Hong Kong	Vietnam	Difference	Ahead
1990s	0.0001 units per square kilometre	0.0001 units per square kilometre	0 units per square kilometre	Vietnam
2000s	0.0001 units per square kilometre	0.0002 units per square kilometre	0.0001 units per square kilometre	Vietnam
2010s	0.0002 units per square kilometre	0.0002 units per square kilometre	0.0001 units per square kilometre	Vietnam

Averages of every year both report within each decade.

Frequently asked questions

Which has higher emission totals - emissions (n2o) - afolu, per square kilometre, Hong Kong or Vietnam?: Vietnam, at 0.0002 units per square kilometre against 0.0002 units per square kilometre in Hong Kong as of 2019.
What is the difference in emission totals - emissions (n2o) - afolu, per square kilometre between Hong Kong and Vietnam?: 0 units per square kilometre, with Vietnam ahead.
How many years of comparable data are there for Hong Kong and Vietnam?: 30 years are reported by both, from 1990 to 2019.
How do Hong Kong and Vietnam rank globally for emission totals - emissions (n2o) - afolu, per square kilometre?: Hong Kong ranks 17th and Vietnam ranks 16th of 206 countries.
Where does this data come from?: Statizoid (derived), published as Emission Totals - Emissions (N2O) - AFOLU, per square kilometre. Statizoid refreshes it automatically from the source and publishes the full history for both places.

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Hong Kong vs Vietnam: Emission Totals - Emissions (N2O) - AFOLU, per square kilometre. Statizoid, drawing on Statizoid (derived). Retrieved 22 September 2026, from https://reference.statizoid.com/compare/emission-totals-emissions-n2o-afolu-per-square-kilometre/hong-kong-sar-china/viet-nam/

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<a href="https://reference.statizoid.com/compare/emission-totals-emissions-n2o-afolu-per-square-kilometre/hong-kong-sar-china/viet-nam/">Hong Kong vs Vietnam: Emission Totals - Emissions (N2O) - AFOLU, per square kilometre</a> — Statizoid

About this data

Indicator: Emission Totals - Emissions (N2O) - AFOLU, per square kilometre
Unit: units per square kilometre
Source: Statizoid (derived)
Licence: Derived by Statizoid from the sources named on the page
Coverage: 206 places, 6,030 data points, 1990–2019
Last refreshed: 17 September 2026

Emission Totals - Emissions (N2O) - AFOLU divided by Land area (sq. km), matched on country and year. Neither publisher issues this ratio as a series; it is computed here from both.