Ontologia

Commune · TCD

Yalnass

Chad

BShArid, steppe, hot(69 %)

Species observed

1

Observations

1

Area

109,1km²

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

1 distinct species · 1 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

1 obs · 1 cellules
Obs. / cellule
≥ 1
1–0
1–0
1–0
< 1

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

Climate

Mean T°

26,0°C

Annual rain

741mm

Warmest m°

37,5°C

Coldest m°

15,0°C

Elevation: 787 m on average (min 539 m, max 1 125 m)

Bioclimatic detailsExpert
Annual mean temp.
26,0°C
Annual rain
741mm
Warmest month
37,5°C
Coldest month
15,0°C
Mean alt.
787m
Min
539m
Max
1 125m
Std. dev.
148m
Köppen-Geiger (dominant)
BShArid, steppe, hot(69 %)Arid

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

Soil & lithology

pH H₂O

6,8

Org. C

15,1g/kg

Clay

30,8%

Sand

36,8%

Silt

32,4%

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

Dominant lithology: suGLiMaggregated to Barh Signaka

3 soil depths detailedExpert
0–5 cm
pH H₂O
6,8
Org. C
19,6g/kg
Clay
28,8%
Sand
38,4%
Silt
32,8%
5–15 cm
pH H₂O
6,8
Org. C
14,8g/kg
Clay
29,9%
Sand
37,4%
Silt
32,7%
15–30 cm
pH H₂O
6,9
Org. C
11,0g/kg
Clay
33,7%
Sand
34,7%
Silt
31,6%

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

Land cover

Forest23.3%
Crops4.9%
Built-up0.0%
Bare soil0.5%
Other (grassland, water…)71.4%

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

Hydrology4 basins · 0 lakes · 0 rivers

Hydrology metrics for this exact territory

Basins crossed

4

Max drainage

1 021km²

Discharge in basins

0,2m³/s

Mean precip.

694mm/an

Mean T°

28,3°C

Moisture idx

-0,67

Mean runoff

54mm/an

Mean elev. (basins)

553m

Watersheds crossing here

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

Human pressure

Pop. density

0hab/km²

Built-up

0,2%

Pesticides

0,1kg/km²

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

Protected areas1

IUCN IV · 1

WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN