Ontologia

Commune · CHN

An

China

CwaTemperate, dry winter, hot summer(80 %)

Species observed

262

Observations

736

Area

1 394,8km²

Ecological tissue

Sample of 24 species (selected proportionally per kingdom among those with at least one documented interaction here) to keep the graph readable. Hover for details, click to explore the full ecosystem of a species.

ℹ️ The territory contains many more species than displayed and all their documented interactions: the graph is intentionally the structural skeleton (top-N species by composite local score, edges filtered by Serrano 2009 disparity filter α=0.2).

RègnesAnimalPlanteChampignonBacterie
RelationsPredationParasitismeSymbiosePollinisation
StatutEn dangerVulnérableProtégéeEndémique

Indicateurs du tissu écologique

Tissu écologique de An : 17 espèces reliées par 24 interactions GloBI sur 3 types (connectance 8.7%, filtre Serrano α=0.2). 7 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
24
Interactions affichées
24
Connectance
0.087
Patrimoniales
0
Plus dense que (national)0 %(top 100%)

Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).

Species present

262 distinct species · 736 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

736 obs · 22 cellules
Obs. / cellule
≥ 277
65–276
40–64
13–39
< 13

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

Climate

Mean T°

14,8°C

Annual rain

1 355mm

Warmest m°

26,5°C

Coldest m°

0,1°C

Elevation: 930 m on average (min 488 m, max 2 764 m)

Bioclimatic detailsExpert
Annual mean temp.
14,8°C
Annual rain
1 355mm
Warmest month
26,5°C
Coldest month
0,1°C
Mean alt.
930m
Min
488m
Max
2 764m
Std. dev.
477m
Köppen-Geiger (dominant)
CwaTemperate, dry winter, hot summer(80 %)Temperate

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

Soil & lithology

pH H₂O

6,5

Org. C

27,3g/kg

Clay

26,0%

Sand

32,0%

Silt

42,0%

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

Dominant lithology: smGLiMaggregated to Mianyang

3 soil depths detailedExpert
0–5 cm
pH H₂O
6,4
Org. C
45,9g/kg
Clay
25,6%
Sand
32,1%
Silt
42,3%
5–15 cm
pH H₂O
6,5
Org. C
21,0g/kg
Clay
25,8%
Sand
32,2%
Silt
42,0%
15–30 cm
pH H₂O
6,5
Org. C
15,0g/kg
Clay
26,6%
Sand
31,8%
Silt
41,6%

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

Land cover

Forest41.0%
Crops30.2%
Built-up1.5%
Bare soil1.6%
Other (grassland, water…)25.6%

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

Hydrology6 basins · 9 lakes · 8 rivers

Hydrology metrics for this exact territory

Stream length here

244,7km

Lake surface here

3,69km²

Basins crossed

6

Max stream order

3

Max drainage

11 989km²

Discharge in basins

49,1m³/s

Mean precip.

930mm/an

Mean T°

15,4°C

Moisture idx

-0,11

Max snow

8%

Mean runoff

482mm/an

Mean elev. (basins)

771m

Watersheds crossing here

Lakes (9, top by area)

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

Human pressure

Pop. density

2hab/km²

Night light

0,7nW

Built-up

151,9%

Pesticides

68,8kg/km²

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