Ontologia

Commune · CHN

Alxa Left

China

BWkArid, desert, cold(98 %)

Species observed

7 008

Observations

34 984

Area

80 518,4km²

Ecological tissue

Sample of 28 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 Alxa Left : 28 espèces + 0 bulles famille, 20 interactions GloBI documentées sur 5 types (connectance 5.3%, filtre Serrano α=0.2).

Espèces affichées
28
Interactions affichées
20
Connectance
0.053
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

7 008 distinct species · 34 984 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

34 984 obs · 39 cellules
Obs. / cellule
≥ 29 582
149–29 581
41–148
8–40
< 8

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

Climate

Mean T°

8,9°C

Annual rain

142mm

Warmest m°

30,5°C

Coldest m°

-14,7°C

Elevation: 1 301 m on average (min 739 m, max 3 289 m)

Bioclimatic detailsExpert
Annual mean temp.
8,9°C
Annual rain
142mm
Warmest month
30,5°C
Coldest month
-14,7°C
Mean alt.
1 301m
Min
739m
Max
3 289m
Std. dev.
231m
Köppen-Geiger (dominant)
BWkArid, desert, cold(98 %)Arid

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

Soil & lithology

pH H₂O

8,3

Org. C

7,2g/kg

Clay

21,3%

Sand

40,2%

Silt

38,4%

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

Dominant lithology: smGLiMaggregated to Alxa

3 soil depths detailedExpert
0–5 cm
pH H₂O
8,2
Org. C
8,0g/kg
Clay
21,8%
Sand
40,2%
Silt
38,0%
5–15 cm
pH H₂O
8,3
Org. C
6,9g/kg
Clay
21,1%
Sand
40,3%
Silt
38,6%
15–30 cm
pH H₂O
8,3
Org. C
6,7g/kg
Clay
21,2%
Sand
40,1%
Silt
38,7%

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

Land cover

Forest0.2%
Crops0.9%
Built-up0.0%
Bare soil83.4%
Other (grassland, water…)15.5%

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

Hydrology120 basins · 32 lakes · 12 rivers

Hydrology metrics for this exact territory

Stream length here

147,8km

Lake surface here

35,92km²

Basins crossed

120

Max stream order

7

Max drainage

316 156km²

Discharge in basins

1 146,4m³/s

Mean precip.

133mm/an

Mean T°

8,0°C

Moisture idx

-0,88

Max snow

15%

Mean runoff

1mm/an

Mean elev. (basins)

1 314m

Watersheds crossing here

111 more basins

Lakes (32, top by area)

23 more lakes

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

Human pressure

Pop. density

0hab/km²

Night light

0,0nW

Built-up

1,9%

Pesticides

1,7kg/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