Ontologia

Commune · CHN

Sêrtar

China

ETPolar, tundra(71 %)

Species observed

603

Observations

1 893

Area

8 486,4km²

Ecological tissue

Sample of 6 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 Sêrtar : 5 espèces reliées par 4 interactions GloBI sur 2 types (connectance 26.7%, filtre Serrano α=0.2). 1 bulle taxonomique (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
6
Interactions affichées
4
Connectance
0.267
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

603 distinct species · 1 893 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

1 893 obs · 33 cellules
Obs. / cellule
≥ 1 390
70–1 389
12–69
2–11
< 2

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

Climate

Mean T°

-2,4°C

Annual rain

952mm

Warmest m°

13,5°C

Coldest m°

-25,2°C

Elevation: 4 237 m on average (min 3 279 m, max 4 763 m)

Bioclimatic detailsExpert
Annual mean temp.
-2,4°C
Annual rain
952mm
Warmest month
13,5°C
Coldest month
-25,2°C
Mean alt.
4 237m
Min
3 279m
Max
4 763m
Std. dev.
227m
Köppen-Geiger (dominant)
ETPolar, tundra(71 %)Polar

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

Soil & lithology

pH H₂O

6,6

Org. C

60,9g/kg

Clay

18,6%

Sand

37,7%

Silt

43,7%

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

Dominant lithology: paGLiMaggregated to Garzê Tibetan

3 soil depths detailedExpert
0–5 cm
pH H₂O
6,6
Org. C
81,4g/kg
Clay
17,4%
Sand
38,5%
Silt
44,1%
5–15 cm
pH H₂O
6,6
Org. C
64,9g/kg
Clay
18,8%
Sand
37,3%
Silt
43,9%
15–30 cm
pH H₂O
6,6
Org. C
36,3g/kg
Clay
19,8%
Sand
37,1%
Silt
43,1%

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

Land cover

Forest6.2%
Crops0.0%
Built-up0.0%
Bare soil6.4%
Other (grassland, water…)87.4%

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

Hydrology35 basins · 0 lakes · 7 rivers

Hydrology metrics for this exact territory

Stream length here

850,7km

Basins crossed

35

Max stream order

4

Max drainage

31 209km²

Discharge in basins

244,3m³/s

Mean precip.

653mm/an

Mean T°

-0,3°C

Moisture idx

-0,11

Max snow

21%

Mean runoff

358mm/an

Mean elev. (basins)

4 246m

Watersheds crossing here

26 more basins

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

Human pressure

Pop. density

0hab/km²

Night light

0,1nW

Built-up

0,3%

Pesticides

9,1kg/km²

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

Protected areas1

IUCN Ib · 1

WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN