Ontologia

Prefecture City · CHN

Ya'an

China

CwbTemperate, dry winter, warm summer(36 %)

Species observed

6 207

Observations

119 019

Area

15 021km²

Ecological tissue

Sample of 26 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 Ya'an : 23 espèces reliées par 22 interactions GloBI sur 5 types (connectance 6.3%, filtre Serrano α=0.2). 4 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
27
Interactions affichées
22
Connectance
0.063
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

6 207 distinct species · 119 019 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

119 019 obs · 322 cellules
Obs. / cellule
≥ 10 843
212–10 842
33–211
10–32
< 10

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

Climate

Mean T°

8,9°C

Annual rain

1 680mm

Warmest m°

20,7°C

Coldest m°

-7,0°C

Elevation: 2 093 m on average (min 542 m, max 5 220 m)

Bioclimatic detailsExpert
Annual mean temp.
8,9°C
Annual rain
1 680mm
Warmest month
20,7°C
Coldest month
-7,0°C
Mean alt.
2 093m
Min
542m
Max
5 220m
Std. dev.
926m
Köppen-Geiger (dominant)
CwbTemperate, dry winter, warm summer(36 %)Temperate

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

Soil & lithology

pH H₂O

5,7

Org. C

46,6g/kg

Clay

24,7%

Sand

34,0%

Silt

41,2%

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

Dominant lithology: smGLiM

3 soil depths detailedExpert
0–5 cm
pH H₂O
5,7
Org. C
70,2g/kg
Clay
24,4%
Sand
34,3%
Silt
41,3%
5–15 cm
pH H₂O
5,7
Org. C
40,0g/kg
Clay
24,5%
Sand
34,2%
Silt
41,3%
15–30 cm
pH H₂O
5,8
Org. C
29,5g/kg
Clay
25,2%
Sand
33,7%
Silt
41,1%

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

Land cover

Forest62.6%
Crops6.6%
Built-up0.2%
Bare soil2.3%
Other (grassland, water…)28.3%

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

Hydrology44 basins · 5 lakes · 55 rivers

Hydrology metrics for this exact territory

Stream length here

1 825,6km

Lake surface here

2,64km²

Basins crossed

44

Max stream order

6

Max drainage

73 281km²

Discharge in basins

5 915,7m³/s

Mean precip.

1 103mm/an

Mean T°

10,7°C

Moisture idx

0,12

Max snow

19%

Mean runoff

729mm/an

Mean elev. (basins)

2 174m

Watersheds crossing here

35 more basins

Lakes (5, top by area)

Rivers / streams (55, ord ≥ 4)

43 more river segments

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

Human pressure

Pop. density

1hab/km²

Night light

0,2nW

Built-up

17,6%

Pesticides

64,4kg/km²

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

Protected areas2

IUCN Not Applicable · 2

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

Sub-administrations7