Ontologia

Commune · CHN

Xian

China

BSkArid, steppe, cold(100 %)

Species observed

139

Observations

235

Area

1 180,5km²

Ecological tissue

Sample of 34 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 Xian : 26 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 37 interactions GloBI sur 5 types (connectance 6.6%, filtre Serrano α=0.2). 8 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
34
Interactions affichées
37
Connectance
0.066
Patrimoniales
1
Plus dense que (national)0 %(top 100%)

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

Species present

139 distinct species · 235 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

235 obs · 6 cellules
Obs. / cellule
≥ 217
217–216
7–216
5–6
< 5

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

Climate

Mean T°

13,9°C

Annual rain

529mm

Warmest m°

31,7°C

Coldest m°

-7,0°C

Elevation: 12 m on average (min 8 m, max 17 m)

Bioclimatic detailsExpert
Annual mean temp.
13,9°C
Annual rain
529mm
Warmest month
31,7°C
Coldest month
-7,0°C
Mean alt.
12m
Min
8m
Max
17m
Std. dev.
2m
Köppen-Geiger (dominant)
BSkArid, steppe, cold(100 %)Arid

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

Soil & lithology

pH H₂O

7,9

Org. C

7,5g/kg

Clay

25,2%

Sand

26,4%

Silt

48,4%

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

Dominant lithology: suGLiMaggregated to Cangzhou

3 soil depths detailedExpert
0–5 cm
pH H₂O
7,9
Org. C
9,4g/kg
Clay
24,9%
Sand
26,7%
Silt
48,4%
5–15 cm
pH H₂O
8,0
Org. C
6,1g/kg
Clay
25,2%
Sand
26,3%
Silt
48,5%
15–30 cm
pH H₂O
8,0
Org. C
7,0g/kg
Clay
25,6%
Sand
26,2%
Silt
48,3%

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

Land cover

Forest4.4%
Crops65.6%
Built-up3.8%
Bare soil2.1%
Other (grassland, water…)24.1%

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

Hydrology9 basins · 0 lakes · 8 rivers

Hydrology metrics for this exact territory

Stream length here

75,1km

Basins crossed

9

Max stream order

6

Max drainage

53 485km²

Discharge in basins

52,4m³/s

Mean precip.

456mm/an

Mean T°

13,0°C

Moisture idx

-0,59

Max snow

2%

Mean runoff

22mm/an

Mean elev. (basins)

21m

Watersheds crossing here

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

Human pressure

Pop. density

3hab/km²

Night light

1,0nW

Built-up

376,1%

Pesticides

67,4kg/km²

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