Ontologia

Commune · CHN

Dulan

China

ETPolar, tundra(42 %)

Species observed

800

Observations

6 069

Area

54 732,7km²

Ecological tissue

Sample of 33 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 Dulan : 23 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 54 interactions GloBI sur 3 types (connectance 10.2%, filtre Serrano α=0.2). 10 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
33
Interactions affichées
54
Connectance
0.102
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

800 distinct species · 6 069 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

6 069 obs · 29 cellules
Obs. / cellule
≥ 1 692
1 066–1 691
185–1 065
29–184
< 29

Source : GBIF — observations agrégées par hexagones 0.2° × 0.2° (~22km), filtre précision coordonnée < 10 km. Fond carte : OpenFreeMap · © OpenStreetMap.

Climate

Mean T°

-0,3°C

Annual rain

326mm

Warmest m°

17,2°C

Coldest m°

-22,3°C

Elevation: 3 663 m on average (min 2 680 m, max 5 304 m)

Bioclimatic detailsExpert
Annual mean temp.
-0,3°C
Annual rain
326mm
Warmest month
17,2°C
Coldest month
-22,3°C
Mean alt.
3 663m
Min
2 680m
Max
5 304m
Std. dev.
751m
Köppen-Geiger (dominant)
ETPolar, tundra(42 %)Polar

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

Soil & lithology

pH H₂O

8,0

Org. C

17,7g/kg

Clay

18,6%

Sand

47,0%

Silt

34,4%

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

Dominant lithology: paGLiMaggregated to Haixi Mongol and Tibetan

3 soil depths detailedExpert
0–5 cm
pH H₂O
7,9
Org. C
21,4g/kg
Clay
18,0%
Sand
47,6%
Silt
34,4%
5–15 cm
pH H₂O
8,0
Org. C
17,9g/kg
Clay
18,5%
Sand
46,8%
Silt
34,7%
15–30 cm
pH H₂O
8,0
Org. C
13,7g/kg
Clay
19,2%
Sand
46,6%
Silt
34,2%

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

Land cover

Forest0.1%
Crops0.9%
Built-up0.0%
Bare soil59.9%
Other (grassland, water…)39.1%

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

Hydrology95 basins · 24 lakes · 18 rivers

Hydrology metrics for this exact territory

Stream length here

2 192,3km

Lake surface here

165,42km²

Basins crossed

95

Max stream order

6

Max drainage

59 261km²

Discharge in basins

119,6m³/s

Mean precip.

251mm/an

Mean T°

0,1°C

Moisture idx

-0,62

Max snow

21%

Mean runoff

11mm/an

Mean elev. (basins)

3 664m

Watersheds crossing here

86 more basins

Lakes (24, top by area)

15 more lakes

Rivers / streams (18, ord ≥ 4)

6 more river segments

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

Human pressure

Pop. density

0hab/km²

Night light

0,0nW

Built-up

0,7%

Pesticides

1,0kg/km²

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