Bắc Giang vs Lianjiang
Tree cover and air quality for both, measured the same way: Sentinel-2 imagery at 10 m detail over a 2 km radius from each city centre, and the live US EPA air quality index. Same radius and same index, so the two numbers compare directly.
Lianjiang has more tree cover — 82.0% against 28.1%.
Lianjiang has cleaner air right now — AQI 78 against 94.
- Tree cover gap
- 53.9 points
- Lianjiang is ahead.
- Air quality gap
- 16 AQI
- Lianjiang is cleaner.
- Trees between them
- 167K
- Lianjiang has more standing.
Tree cover
Share of the 2 km radius under canopy.
28.1%
82.0%
Air quality index
US EPA index, live, with its band. Lower is better.
94 · Moderate
78 · Moderate
Trees standing
Estimated from the measured canopy area.
87.3K
255K
Trees still needed
To reach the same canopy target. Fewer is better.
5.9K
0
CO₂ absorbed each year
By the trees already standing.
1.9M kg
5.6M kg
Air quality in detail
What each city is breathing
Concentrations in µg/m³, measured at the same moment as the index above. Lower is better in every row. Both are modelled, with no ground station close enough to either.
PM2.5
Fine particles, the pollutant that usually sets the index.
32.7 µg/m³
25 µg/m³
PM10
Coarser particles — dust, pollen, road grit.
34.1 µg/m³
27 µg/m³
Nitrogen dioxide
Mostly traffic and combustion.
31.1 µg/m³
22.6 µg/m³
Ozone
Forms in sunlight; peaks on hot, still afternoons.
40 µg/m³
54 µg/m³
The last week, day by day
A single reading can catch a city on a bad afternoon. The week says whether it was the weather or the place.
| Day | Bắc Giang | Lianjiang |
|---|---|---|
| 23 Sept | 153 | 85 |
| 24 Sept | 137 | 71 |
| 25 Sept | 138 | 66 |
| 26 Sept | 112 | 65 |
| 27 Sept | 110 | 56 |
| 28 Sept | 101 | 65 |
| 29 Sept | 79 | 75 |
Reading these numbers
What is actually being measured
Tree cover
The share of ground under canopy inside a 2 km radius of each city centre, read from Sentinel-2 satellite imagery at 10 m detail. It is a measurement of that circle, not of the whole municipality — which is exactly what makes the two comparable, since city boundaries are drawn to wildly different rules around the world. Lianjiang leads here at 82.0%.
Air quality index
The live US EPA index, computed from current pollutant concentrations — ground stations where a city has them nearby, and a model everywhere else. It moves hour to hour, so this is a snapshot rather than a verdict on either place: Bắc Giang reads 94 (moderate) and Lianjiang reads 78 (moderate) right now.
Frequently asked
Bắc Giang and Lianjiang, answered
Which has more trees, Bắc Giang or Lianjiang?
Lianjiang, with roughly 254,777 trees inside its 2 km radius against 87,308. Tree cover tells a slightly different story from raw count: Lianjiang has the denser canopy at 82.0%.
Which has better air quality, Bắc Giang or Lianjiang?
Lianjiang right now, at AQI 78 against 94 — a gap of 16 points. This is a live reading rather than an annual average, so it can reverse within a day.
How many more trees does each city need?
Bắc Giang needs about 5,903 more to reach its canopy target, and Lianjiang about 0. The target is the same share of ground for both, so the figures are directly comparable.
Are these two measured the same way?
Yes — that is the point of the page. Identical radius, identical satellite source at 10 m detail, and the same US EPA index for air. Nothing here is adjusted for population, city limits or climate, so the numbers describe the same-sized circle of ground in each place.
Keep going
Other comparisons nearby
- Bắc Giang vs Bắc Ninh39% tree cover · AQI 94Compare
- Bắc Giang vs Chí Linh49% tree cover · AQI 66Compare
- Bắc Giang vs Thuận Thanh39% tree cover · AQI 80Compare
- Bắc Giang vs Phổ Yên47% tree cover · AQI 75Compare
- Bắc Giang vs Zhanjiang33% tree cover · AQI 65Compare
- Bắc Giang vs Wuchuan54% tree cover · AQI 80Compare
Build your own
Compare Bắc Giang with somewhere else
This place
Bắc Giang
Want a different pair? Browse comparisons or measure any address.