Ontologia

Commune · CHN

Yijun

China

DwaCold, dry winter, hot summer(84 %)

Species observed

308

Observations

905

Area

1 515,4km²

Ecological tissue

Sample of 13 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 Yijun : 10 espèces reliées par 13 interactions GloBI sur 2 types (connectance 16.7%, filtre Serrano α=0.2). 3 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
13
Interactions affichées
13
Connectance
0.167
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

308 distinct species · 905 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

905 obs · 5 cellules
Obs. / cellule
≥ 894
894–893
5–893
2–4
< 2

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

Climate

Mean T°

10,4°C

Annual rain

749mm

Warmest m°

27,1°C

Coldest m°

-8,4°C

Elevation: 1 159 m on average (min 699 m, max 1 528 m)

Bioclimatic detailsExpert
Annual mean temp.
10,4°C
Annual rain
749mm
Warmest month
27,1°C
Coldest month
-8,4°C
Mean alt.
1 159m
Min
699m
Max
1 528m
Std. dev.
165m
Köppen-Geiger (dominant)
DwaCold, dry winter, hot summer(84 %)Cold

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

17,5g/kg

Clay

25,2%

Sand

27,9%

Silt

46,8%

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

Dominant lithology: ssGLiMaggregated to Tongchuan

3 soil depths detailedExpert
0–5 cm
pH H₂O
7,9
Org. C
32,9g/kg
Clay
25,1%
Sand
28,1%
Silt
46,8%
5–15 cm
pH H₂O
8,0
Org. C
11,3g/kg
Clay
25,2%
Sand
28,0%
Silt
46,8%
15–30 cm
pH H₂O
8,0
Org. C
8,4g/kg
Clay
25,4%
Sand
27,7%
Silt
46,9%

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

Land cover

Forest38.2%
Crops18.7%
Built-up0.2%
Bare soil0.5%
Other (grassland, water…)42.4%

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

Hydrology6 basins · 2 lakes · 6 rivers

Hydrology metrics for this exact territory

Stream length here

110,7km

Lake surface here

0,50km²

Basins crossed

6

Max stream order

5

Max drainage

23 881km²

Discharge in basins

32,2m³/s

Mean precip.

575mm/an

Mean T°

10,7°C

Moisture idx

-0,44

Max snow

1%

Mean runoff

93mm/an

Mean elev. (basins)

1 119m

Watersheds crossing here

Lakes (2, top by area)

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

Human pressure

Pop. density

0hab/km²

Night light

0,2nW

Built-up

22,8%

Pesticides

70,3kg/km²

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