Vallée de la Loire du Loir-et-Cher
IUCN Not ReportedSpecial Protection Area (Birds Directive) · 2017
24 km²
Commune · FRA
Onzain
France
CfbTemperate, no dry season, warm summer(100 %)
Species observed
3 467
Observations
77 480
Area
29,8km²
Ecological tissue
Graphe en cours d’indexation
Calcul du tissu écologique de cette entité.
Le graphe apparaîtra automatiquement dès que le calcul est terminé (rafraîchissement toutes les 2s).
Species present
3 467 distinct species · 77 480 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
11,8°C
Annual rain
701mm
Warmest m°
24,4°C
Coldest m°
1,6°C
Elevation: 87 m on average (min 62 m, max 113 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
11,8°C
Annual rain
701mm
Warmest month
24,4°C
Coldest month
1,6°C
Mean alt.
87m
Min
62m
Max
113m
Std. dev.
15m
Köppen-Geiger (dominant)
CfbTemperate, no dry season, warm summer(100 %)Temperate
CHELSA BIO 1-19 v2.1 · ETOPO DEM 60s · Köppen-Geiger 1991-2020 (Beck et al. 2018)
Soil & lithology
pH H₂O
6,7
Org. C
21,7g/kg
Clay
28,6%
Sand
30,5%
Silt
40,9%
Average over 0-30 cm. Per-depth details in expert panel.
Dominant lithology: scGLiMaggregated to Loir-et-Cher
3 soil depths detailed0-5cm / 5-15cm / 15-30cm × 5 propsExpert
0–5 cm
pH H₂O
6,5
Org. C
36,5g/kg
Clay
27,4%
Sand
31,3%
Silt
41,3%
5–15 cm
pH H₂O
6,8
Org. C
15,6g/kg
Clay
28,0%
Sand
30,7%
Silt
41,3%
15–30 cm
pH H₂O
6,8
Org. C
12,9g/kg
Clay
30,3%
Sand
29,5%
Silt
40,3%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest21.7%
Crops51.8%
Built-up1.4%
Bare soil0.6%
Other (grassland, water…)24.4%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology1 basins · 0 lakes · 4 rivers
Hydrology metrics for this exact territory
Stream length here
13,7km
Basins crossed
1
Max stream order
6
Max drainage
42 572km²
Discharge in basins
7,6m³/s
Mean precip.
673mm/an
Mean T°
11,2°C
Moisture idx
-0,22
Max snow
4%
Mean runoff
203mm/an
Mean elev. (basins)
107m
Watersheds crossing here
Rivers / streams (4, ord ≥ 4)
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
1hab/km²
Night light
0,3nW
Built-up
139,9%
Pesticides
45,2kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Protected areas3
IUCN Not Reported · 2IUCN IV · 1
Vallée de la Loire de Mosnes à Tavers
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive) · 2007
23 km²
Îles de la Saulas, des Tuileries, de Chaumont et de l\'ancien barrage
IUCN IVBiotope Protection Order · 2007
1 km²
WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN
France-specific data (Phase 2)
ZNIEFF, Natura 2000, INPN protected spaces, BNV-D pesticides, Naïades water quality, SAFRAN fine climate, BRGM lithology — Layer FR to load in Phase 2.