Ontologia

Prefecture City · CHN

Xi'an

China

DwbCold, dry winter, warm summer(32 %)

Species observed

3 114

Observations

28 281

Area

10 193km²

Ecological tissue

Sample of 44 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 Xi'an : 35 espèces reliées par 59 interactions GloBI sur 3 types (connectance 6.2%, filtre Serrano α=0.2). 9 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
44
Interactions affichées
59
Connectance
0.062
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

3 114 distinct species · 28 281 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

28 281 obs · 229 cellules
Obs. / cellule
≥ 2 428
218–2 427
32–217
12–31
< 12

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

Climate

Mean T°

12,1°C

Annual rain

828mm

Warmest m°

27,6°C

Coldest m°

-6,2°C

Elevation: 1 017 m on average (min 348 m, max 3 520 m)

Bioclimatic detailsExpert
Annual mean temp.
12,1°C
Annual rain
828mm
Warmest month
27,6°C
Coldest month
-6,2°C
Mean alt.
1 017m
Min
348m
Max
3 520m
Std. dev.
642m
Köppen-Geiger (dominant)
DwbCold, dry winter, warm summer(32 %)Cold

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

Soil & lithology

pH H₂O

7,0

Org. C

23,4g/kg

Clay

22,3%

Sand

29,2%

Silt

48,5%

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

Dominant lithology: suGLiM

3 soil depths detailedExpert
0–5 cm
pH H₂O
6,9
Org. C
39,3g/kg
Clay
21,3%
Sand
29,9%
Silt
48,8%
5–15 cm
pH H₂O
7,0
Org. C
19,0g/kg
Clay
22,2%
Sand
29,1%
Silt
48,7%
15–30 cm
pH H₂O
7,0
Org. C
11,9g/kg
Clay
23,5%
Sand
28,5%
Silt
48,0%

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

Land cover

Forest38.8%
Crops21.6%
Built-up3.6%
Bare soil1.3%
Other (grassland, water…)34.7%

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

Hydrology41 basins · 16 lakes · 72 rivers

Hydrology metrics for this exact territory

Stream length here

1 898,1km

Lake surface here

5,27km²

Basins crossed

41

Max stream order

7

Max drainage

103 346km²

Discharge in basins

1 501,6m³/s

Mean precip.

698mm/an

Mean T°

11,8°C

Moisture idx

-0,29

Max snow

6%

Mean runoff

192mm/an

Mean elev. (basins)

1 011m

Watersheds crossing here

32 more basins

Lakes (16, top by area)

7 more lakes

Rivers / streams (72, ord ≥ 4)

60 more river segments

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

Human pressure

Pop. density

6hab/km²

Night light

5,2nW

Built-up

364,0%

Pesticides

70,0kg/km²

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

Sub-administrations6