Ontologia

Prefecture City · CHN

Lanzhou

China

BSkArid, steppe, cold(76 %)

Species observed

7 004

Observations

35 760

Area

13 269,6km²

Ecological tissue

Sample of 32 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 Lanzhou : 22 espèces reliées par 63 interactions GloBI sur 3 types (connectance 10.6%, filtre Serrano α=0.2). 13 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
35
Interactions affichées
63
Connectance
0.106
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

7 004 distinct species · 35 760 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

35 760 obs · 120 cellules
Obs. / cellule
≥ 4 586
676–4 585
32–675
3–31
< 3

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

Climate

Mean T°

7,2°C

Annual rain

344mm

Warmest m°

24,8°C

Coldest m°

-13,4°C

Elevation: 2 097 m on average (min 1 443 m, max 3 547 m)

Bioclimatic detailsExpert
Annual mean temp.
7,2°C
Annual rain
344mm
Warmest month
24,8°C
Coldest month
-13,4°C
Mean alt.
2 097m
Min
1 443m
Max
3 547m
Std. dev.
334m
Köppen-Geiger (dominant)
BSkArid, steppe, cold(76 %)Arid

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

Soil & lithology

pH H₂O

8,1

Org. C

19,4g/kg

Clay

19,4%

Sand

31,9%

Silt

48,7%

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

Dominant lithology: ssGLiM

3 soil depths detailedExpert
0–5 cm
pH H₂O
8,0
Org. C
30,1g/kg
Clay
18,8%
Sand
32,2%
Silt
48,9%
5–15 cm
pH H₂O
8,1
Org. C
15,1g/kg
Clay
19,3%
Sand
31,9%
Silt
48,8%
15–30 cm
pH H₂O
8,2
Org. C
12,9g/kg
Clay
20,2%
Sand
31,4%
Silt
48,4%

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

Land cover

Forest4.9%
Crops24.3%
Built-up0.8%
Bare soil6.2%
Other (grassland, water…)63.9%

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

Hydrology39 basins · 7 lakes · 21 rivers

Hydrology metrics for this exact territory

Stream length here

1 500,5km

Lake surface here

6,28km²

Basins crossed

39

Max stream order

7

Max drainage

232 184km²

Discharge in basins

4 768,8m³/s

Mean precip.

369mm/an

Mean T°

6,2°C

Moisture idx

-0,60

Max snow

5%

Mean runoff

7mm/an

Mean elev. (basins)

2 133m

Watersheds crossing here

30 more basins

Lakes (7, top by area)

Rivers / streams (21, ord ≥ 4)

9 more river segments

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

Human pressure

Pop. density

2hab/km²

Night light

1,3nW

Built-up

79,6%

Pesticides

66,5kg/km²

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

Sub-administrations4