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 - Indirect 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 - Indirect emissions (N2O) - AFOLU, per square

Hong Kong

0.0001 units per square kilometre

in 2019

Vietnam

0 units per square kilometre

in 2019

Hong Kong rank

14th

Vietnam rank

17th

Emission Totals - Indirect emissions (N2O) - AFOLU, per square over time

Hong Kong
Vietnam

How they compare

Hong Kong currently reports 0.0001 units per square kilometre against 0 units per square kilometre in Vietnam, a difference of 0.0001 units per square kilometre.

That makes Hong Kong's figure about 1.1 times Vietnam's.

The two have swapped places 2 times across 30 shared years of data; in 1990 it was Hong Kong ahead.

Hong Kong ranks 14th and Vietnam ranks 17th of 193 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 units per square kilometre	0 units per square kilometre	0 units per square kilometre	Vietnam
2000s	0 units per square kilometre	0 units per square kilometre	0 units per square kilometre	Vietnam
2010s	0 units per square kilometre	0 units per square kilometre	0 units per square kilometre	Vietnam

Averages of every year both report within each decade.

Frequently asked questions

Which has higher emission totals - indirect emissions (n2o) - afolu, per square, Hong Kong or Vietnam?: Hong Kong, at 0.0001 units per square kilometre against 0 units per square kilometre in Vietnam as of 2019.
What is the difference in emission totals - indirect emissions (n2o) - afolu, per square between Hong Kong and Vietnam?: 0.0001 units per square kilometre, with Hong Kong 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 - indirect emissions (n2o) - afolu, per square?: Hong Kong ranks 14th and Vietnam ranks 17th of 193 countries.
Where does this data come from?: Statizoid (derived), published as Emission Totals - Indirect 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 - Indirect emissions (N2O) - AFOLU, per square. Statizoid, drawing on Statizoid (derived). Retrieved 22 September 2026, from https://reference.statizoid.com/compare/emission-totals-indirect-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-indirect-emissions-n2o-afolu-per-square-kilometre/hong-kong-sar-china/viet-nam/">Hong Kong vs Vietnam: Emission Totals - Indirect emissions (N2O) - AFOLU, per square</a> — Statizoid

About this data

Indicator: Emission Totals - Indirect 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: 193 places, 5,639 data points, 1990–2019
Last refreshed: 16 September 2026

Emission Totals - Indirect 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.