Ontologia

Commune · CHN

Yanchuan

China

DwaCold, dry winter, hot summer(76 %)

Species observed

96

Observations

196

Area

1 968,7km²

Ecological tissue

Sample of 15 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 Yanchuan : 10 espèces reliées par 15 interactions GloBI sur 4 types (connectance 12.5%, filtre Serrano α=0.2). 6 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
16
Interactions affichées
15
Connectance
0.125
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

96 distinct species · 196 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

196 obs · 2 cellules
Obs. / cellule
≥ 187
187–186
187–186
187–186
< 187

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

Climate

Mean T°

10,8°C

Annual rain

497mm

Warmest m°

29,5°C

Coldest m°

-10,4°C

Elevation: 978 m on average (min 572 m, max 1 272 m)

Bioclimatic detailsExpert
Annual mean temp.
10,8°C
Annual rain
497mm
Warmest month
29,5°C
Coldest month
-10,4°C
Mean alt.
978m
Min
572m
Max
1 272m
Std. dev.
135m
Köppen-Geiger (dominant)
DwaCold, dry winter, hot summer(76 %)Cold

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

11,6g/kg

Clay

15,5%

Sand

41,2%

Silt

43,3%

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

Dominant lithology: ssGLiMaggregated to Yan'an

3 soil depths detailedExpert
0–5 cm
pH H₂O
8,3
Org. C
20,5g/kg
Clay
15,0%
Sand
41,5%
Silt
43,5%
5–15 cm
pH H₂O
8,4
Org. C
7,4g/kg
Clay
15,6%
Sand
41,3%
Silt
43,1%
15–30 cm
pH H₂O
8,4
Org. C
7,0g/kg
Clay
16,0%
Sand
40,8%
Silt
43,2%

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

Land cover

Forest16.5%
Crops16.7%
Built-up0.1%
Bare soil3.3%
Other (grassland, water…)63.3%

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

Hydrology11 basins · 1 lakes · 3 rivers

Hydrology metrics for this exact territory

Stream length here

248,3km

Lake surface here

0,29km²

Basins crossed

11

Max stream order

7

Max drainage

484 573km²

Discharge in basins

290,5m³/s

Mean precip.

504mm/an

Mean T°

9,6°C

Moisture idx

-0,54

Max snow

1%

Mean runoff

54mm/an

Mean elev. (basins)

1 015m

Watersheds crossing here

2 more basins

Lakes (1, top by area)

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

Human pressure

Pop. density

1hab/km²

Night light

0,3nW

Built-up

15,1%

Pesticides

70,3kg/km²

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