Ontologia

District · YEM

Merkhah Al Ulya

Yemen

BWhArid, desert, hot(100 %)

Species observed

0

Observations

0

Area

838km²

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

0 distinct species · 0 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

0 obs · 0 cellules

Aucune observation géoréférencée précise (<10 km) dans ce territoire.

Source : GBIF — observations agrégées par hexagones 0.2° × 0.2° (~22km), filtre précision coordonnée < 10 km. Fond carte : OpenFreeMap · © OpenStreetMap.

Climate

Mean T°

24,1°C

Annual rain

158mm

Warmest m°

34,7°C

Coldest m°

10,6°C

Elevation: 1 417 m on average (min 1 115 m, max 1 920 m)

Bioclimatic detailsExpert
Annual mean temp.
24,1°C
Annual rain
158mm
Warmest month
34,7°C
Coldest month
10,6°C
Mean alt.
1 417m
Min
1 115m
Max
1 920m
Std. dev.
208m
Köppen-Geiger (dominant)
BWhArid, desert, hot(100 %)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

9,1g/kg

Clay

19,3%

Sand

45,5%

Silt

35,2%

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

Dominant lithology: mtGLiM

3 soil depths detailedExpert
0–5 cm
pH H₂O
8,0
Org. C
10,5g/kg
Clay
17,1%
Sand
47,4%
Silt
35,5%
5–15 cm
pH H₂O
8,1
Org. C
8,1g/kg
Clay
18,1%
Sand
46,3%
Silt
35,6%
15–30 cm
pH H₂O
8,1
Org. C
8,6g/kg
Clay
22,6%
Sand
42,8%
Silt
34,6%

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

Land cover

Forest0.2%
Crops1.2%
Built-up0.0%
Bare soil86.9%
Other (grassland, water…)11.7%

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

Hydrology3 basins · 0 lakes · 3 rivers

Hydrology metrics for this exact territory

Stream length here

122,6km

Basins crossed

3

Max stream order

4

Max drainage

1 726km²

Mean precip.

154mm/an

Mean T°

19,0°C

Moisture idx

-0,90

Mean runoff

15mm/an

Mean elev. (basins)

1 555m

Watersheds crossing here

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

Human pressure

Pop. density

1hab/km²

Night light

0,0nW

Built-up

0,4%

Pesticides

0,0kg/km²

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