Ontologia

Commune · CHN

Yu

China

DwbCold, dry winter, warm summer(48 %)

Species observed

1 545

Observations

13 630

Area

3 196,2km²

Ecological tissue

Sample of 4 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 Yu : 4 espèces reliées par 2 interactions GloBI sur 1 type (connectance 33.3%, filtre Serrano α=0.2).

Espèces affichées
4
Interactions affichées
2
Connectance
0.333
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

1 545 distinct species · 13 630 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

13 630 obs · 33 cellules
Obs. / cellule
≥ 8 396
40–8 395
15–39
12–14
< 12

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

Climate

Mean T°

6,1°C

Annual rain

554mm

Warmest m°

25,0°C

Coldest m°

-16,9°C

Elevation: 1 305 m on average (min 847 m, max 2 622 m)

Bioclimatic detailsExpert
Annual mean temp.
6,1°C
Annual rain
554mm
Warmest month
25,0°C
Coldest month
-16,9°C
Mean alt.
1 305m
Min
847m
Max
2 622m
Std. dev.
359m
Köppen-Geiger (dominant)
DwbCold, dry winter, warm summer(48 %)Cold

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

Soil & lithology

pH H₂O

7,7

Org. C

21,9g/kg

Clay

18,7%

Sand

44,9%

Silt

36,4%

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

Dominant lithology: paGLiMaggregated to Zhangjiakou

3 soil depths detailedExpert
0–5 cm
pH H₂O
7,7
Org. C
31,9g/kg
Clay
18,0%
Sand
45,3%
Silt
36,7%
5–15 cm
pH H₂O
7,8
Org. C
19,6g/kg
Clay
18,8%
Sand
44,8%
Silt
36,4%
15–30 cm
pH H₂O
7,8
Org. C
14,1g/kg
Clay
19,3%
Sand
44,5%
Silt
36,2%

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

Land cover

Forest17.6%
Crops32.6%
Built-up0.8%
Bare soil3.7%
Other (grassland, water…)45.3%

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

Hydrology13 basins · 3 lakes · 5 rivers

Hydrology metrics for this exact territory

Stream length here

257,6km

Lake surface here

4,07km²

Basins crossed

13

Max stream order

4

Max drainage

25 502km²

Discharge in basins

9,2m³/s

Mean precip.

464mm/an

Mean T°

5,2°C

Moisture idx

-0,48

Max snow

6%

Mean runoff

23mm/an

Mean elev. (basins)

1 276m

Watersheds crossing here

4 more basins

Lakes (3, top by area)

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

Human pressure

Pop. density

1hab/km²

Night light

0,2nW

Built-up

82,0%

Pesticides

75,2kg/km²

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