Ontologia

Commune · CHN

Usu

China

BWkArid, desert, cold(54 %)

Species observed

386

Observations

1 119

Area

15 030,8km²

Ecological tissue

Sample of 34 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 Usu : 24 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 72 interactions GloBI sur 5 types (connectance 12.8%, filtre Serrano α=0.2). 10 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
34
Interactions affichées
72
Connectance
0.128
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

386 distinct species · 1 119 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

1 119 obs · 56 cellules
Obs. / cellule
≥ 260
37–259
10–36
2–9
< 2

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

Climate

Mean T°

3,4°C

Annual rain

404mm

Warmest m°

23,6°C

Coldest m°

-18,0°C

Elevation: 1 488 m on average (min 231 m, max 4 604 m)

Bioclimatic detailsExpert
Annual mean temp.
3,4°C
Annual rain
404mm
Warmest month
23,6°C
Coldest month
-18,0°C
Mean alt.
1 488m
Min
231m
Max
4 604m
Std. dev.
1 316m
Köppen-Geiger (dominant)
BWkArid, desert, cold(54 %)Arid

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

Soil & lithology

pH H₂O

7,9

Org. C

24,7g/kg

Clay

23,2%

Sand

37,4%

Silt

39,4%

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

Dominant lithology: smGLiMaggregated to Tacheng

3 soil depths detailedExpert
0–5 cm
pH H₂O
7,9
Org. C
34,3g/kg
Clay
22,7%
Sand
37,4%
Silt
39,9%
5–15 cm
pH H₂O
7,9
Org. C
22,5g/kg
Clay
23,2%
Sand
37,5%
Silt
39,4%
15–30 cm
pH H₂O
8,0
Org. C
17,4g/kg
Clay
23,7%
Sand
37,2%
Silt
39,1%

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

Land cover

Forest3.4%
Crops13.4%
Built-up0.2%
Bare soil20.6%
Other (grassland, water…)62.5%

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

Hydrology50 basins · 28 lakes · 23 rivers

Hydrology metrics for this exact territory

Stream length here

1 062,2km

Lake surface here

55,00km²

Basins crossed

50

Max stream order

6

Max drainage

24 990km²

Discharge in basins

61,6m³/s

Mean precip.

213mm/an

Mean T°

3,5°C

Moisture idx

-0,66

Max snow

63%

Mean runoff

19mm/an

Mean elev. (basins)

1 363m

Watersheds crossing here

41 more basins

Lakes (28, top by area)

19 more lakes

Rivers / streams (23, ord ≥ 4)

11 more river segments

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

Human pressure

Pop. density

0hab/km²

Night light

0,1nW

Built-up

18,2%

Pesticides

34,1kg/km²

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