Guankou
Measured across a 2 km radius around Liuyang, Changsha, Hunan, China (12.57 km²)
- Tree cover
- 25.3%
- Air quality
- 177Unhealthy
- Trees in this area
- 78.7K
- More trees needed
- 45.7K
- Area analyzed
- 12.44 km²land, in a 12.57 km² circle
- Satellite image
- Sep 25, 2026
Guankou's tree count comes to 78,687 trees across 12.44 km² of land — 15 points below the 40% tree-cover level considered healthy for this area, meaning roughly 45,720 more trees would close the gap. Air quality currently reads AQI 177 (Unhealthy): Everyone should limit long outdoor exertion; sensitive groups more so.
Tree cover detail
Below target
25.3% tree cover against a 40% healthy-neighborhood target, across 12.44 km² of land.
Trees in this area
78,687
Target trees
124,407
More trees needed
45,720
CO₂ if planted / yr
1,006 t
Air quality detail
AQI 177Unhealthy
Observed Sep 27, 12:00 local time via Open-Meteo / CAMS, US EPA index. Values in µg/m³.
Health signal
Everyone should limit long outdoor exertion; sensitive groups more so.
PM2.5
22.0
PM10
24.2
NO₂
2.9
O₃
189.0
SO₂
7.9
CO
442.0
Frequently asked
Questions about Guankou
What is the tree count in Guankou?
Guankou has an estimated 78,687 trees across the 12.44 km² of land measured — 25.3% tree cover, 15 percentage points short of the 40% tree-cover target set for this area.
How many more trees does Guankou need?
Guankou needs roughly 45,720 more trees to close a 15-point shortfall against its 40% tree-cover target — about 1,006 t of extra CO₂ absorbed per year once grown.
What is the air quality (AQI) in Guankou right now?
The latest reading for Guankou shows an AQI of 177 (Unhealthy), observed Sep 27, 12:00 local time via Open-Meteo / CAMS, US EPA index. Everyone should limit long outdoor exertion; sensitive groups more so.
How is Guankou's tree cover and air quality measured?
Tree cover is measured from Sentinel-2 L2A (ESA Copernicus) via Earth Search satellite imagery at 10 m detail across a 2 km radius around Liuyang; the tree count is an estimate derived from that cover. Air-quality readings come from Open-Meteo / CAMS, US EPA index and may differ from street-level monitors.
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