Ontologia

District · YEM

Arhab

Yemen

BWhArid, desert, hot(70 %)

Species observed

17

Observations

25

Area

1 275,5km²

Partial data for this territory

Few observations recorded here. Real biodiversity is likely richer.

Ecological tissue

Not enough documented interactions to build a meaningful graph for this territory.

Species present

17 distinct species · 25 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

25 obs · 11 cellules
Obs. / cellule
≥ 5
4–4
3–3
2–2
< 2

Source : GBIF — observations agrégées par hexagones 0.027° × 0.027° (~22km), filtre précision coordonnée < 10 km. Fond carte : OpenFreeMap · © OpenStreetMap.

Climate

Mean T°

18,7°C

Annual rain

167mm

Warmest m°

28,1°C

Coldest m°

6,8°C

Elevation: 2 260 m on average (min 1 389 m, max 2 849 m)

Bioclimatic detailsExpert
Annual mean temp.
18,7°C
Annual rain
167mm
Warmest month
28,1°C
Coldest month
6,8°C
Mean alt.
2 260m
Min
1 389m
Max
2 849m
Std. dev.
288m
Köppen-Geiger (dominant)
BWhArid, desert, hot(70 %)Arid

CHELSA BIO 1-19 v2.1 · ETOPO DEM 60s · Köppen-Geiger 1991-2020 (Beck et al. 2018)

Soil & lithology

pH H₂O

8,1

Org. C

12,0g/kg

Clay

22,0%

Sand

43,3%

Silt

34,7%

Average over 0-30 cm. Per-depth details in expert panel.

Dominant lithology: vbGLiM

3 soil depths detailedExpert
0–5 cm
pH H₂O
8,0
Org. C
14,6g/kg
Clay
21,2%
Sand
44,1%
Silt
34,8%
5–15 cm
pH H₂O
8,1
Org. C
10,8g/kg
Clay
22,0%
Sand
43,3%
Silt
34,6%
15–30 cm
pH H₂O
8,1
Org. C
10,6g/kg
Clay
22,9%
Sand
42,6%
Silt
34,6%

SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)

Land cover

Forest2.3%
Crops4.2%
Built-up0.1%
Bare soil67.8%
Other (grassland, water…)25.7%

Copernicus Global Land Cover 100m (Buchhorn et al. 2020)

Hydrology5 basins · 0 lakes · 1 rivers

Hydrology metrics for this exact territory

Stream length here

4,0km

Basins crossed

5

Max stream order

4

Max drainage

4 094km²

Discharge in basins

1,2m³/s

Mean precip.

236mm/an

Mean T°

16,1°C

Moisture idx

-0,85

Mean runoff

10mm/an

Mean elev. (basins)

2 243m

Watersheds crossing here

Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10

Human pressure

Pop. density

1hab/km²

Night light

0,1nW

Built-up

4,8%

Pesticides

0,4kg/km²

GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)