Ontologia

Commune · CHN

Zhang

China

DwbCold, dry winter, warm summer(62 %)

Species observed

521

Observations

1 385

Area

2 203,6km²

Ecological tissue

Sample of 11 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 Zhang : 8 espèces reliées par 12 interactions GloBI sur 3 types (connectance 21.8%, filtre Serrano α=0.2). 3 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
11
Interactions affichées
12
Connectance
0.218
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

521 distinct species · 1 385 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

1 385 obs · 10 cellules
Obs. / cellule
≥ 1 028
1 028–1 027
81–1 027
34–80
< 34

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

Climate

Mean T°

4,1°C

Annual rain

698mm

Warmest m°

20,0°C

Coldest m°

-17,7°C

Elevation: 2 536 m on average (min 1 701 m, max 3 587 m)

Bioclimatic detailsExpert
Annual mean temp.
4,1°C
Annual rain
698mm
Warmest month
20,0°C
Coldest month
-17,7°C
Mean alt.
2 536m
Min
1 701m
Max
3 587m
Std. dev.
360m
Köppen-Geiger (dominant)
DwbCold, dry winter, warm summer(62 %)Cold

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

Soil & lithology

pH H₂O

7,4

Org. C

39,0g/kg

Clay

20,9%

Sand

31,8%

Silt

47,3%

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

Dominant lithology: smGLiMaggregated to Dingxi

3 soil depths detailedExpert
0–5 cm
pH H₂O
7,3
Org. C
59,8g/kg
Clay
20,1%
Sand
32,3%
Silt
47,6%
5–15 cm
pH H₂O
7,4
Org. C
33,4g/kg
Clay
20,9%
Sand
31,9%
Silt
47,2%
15–30 cm
pH H₂O
7,4
Org. C
23,9g/kg
Clay
21,8%
Sand
31,1%
Silt
47,1%

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

Land cover

Forest18.5%
Crops19.9%
Built-up0.1%
Bare soil2.1%
Other (grassland, water…)59.4%

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

Hydrology9 basins · 0 lakes · 3 rivers

Hydrology metrics for this exact territory

Stream length here

170,6km

Basins crossed

9

Max stream order

3

Max drainage

17 334km²

Discharge in basins

15,4m³/s

Mean precip.

592mm/an

Mean T°

5,5°C

Moisture idx

-0,30

Max snow

2%

Mean runoff

163mm/an

Mean elev. (basins)

2 516m

Watersheds crossing here

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

Human pressure

Pop. density

1hab/km²

Night light

0,1nW

Built-up

11,4%

Pesticides

76,4kg/km²

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