Ontologia

Commune · CHN

Cheng

China

DwbCold, dry winter, warm summer(41 %)

Species observed

637

Observations

1 435

Area

1 662,9km²

Ecological tissue

Sample of 31 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 Cheng : 27 espèces reliées par 29 interactions GloBI sur 3 types (connectance 6.2%, filtre Serrano α=0.2). 4 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
31
Interactions affichées
29
Connectance
0.062
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

637 distinct species · 1 435 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

1 435 obs · 14 cellules
Obs. / cellule
≥ 1 261
83–1 260
7–82
3–6
< 3

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

Climate

Mean T°

11,1°C

Annual rain

823mm

Warmest m°

25,4°C

Coldest m°

-7,3°C

Elevation: 1 359 m on average (min 854 m, max 2 214 m)

Bioclimatic detailsExpert
Annual mean temp.
11,1°C
Annual rain
823mm
Warmest month
25,4°C
Coldest month
-7,3°C
Mean alt.
1 359m
Min
854m
Max
2 214m
Std. dev.
235m
Köppen-Geiger (dominant)
DwbCold, dry winter, warm summer(41 %)Cold

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

Soil & lithology

pH H₂O

6,8

Org. C

24,6g/kg

Clay

22,8%

Sand

32,6%

Silt

44,6%

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

Dominant lithology: smGLiMaggregated to Longnan

3 soil depths detailedExpert
0–5 cm
pH H₂O
6,8
Org. C
42,0g/kg
Clay
21,8%
Sand
33,1%
Silt
45,1%
5–15 cm
pH H₂O
6,8
Org. C
19,6g/kg
Clay
22,9%
Sand
32,7%
Silt
44,4%
15–30 cm
pH H₂O
6,8
Org. C
12,4g/kg
Clay
23,7%
Sand
32,1%
Silt
44,3%

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

Land cover

Forest52.0%
Crops14.9%
Built-up0.4%
Bare soil0.6%
Other (grassland, water…)32.1%

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

Hydrology6 basins · 0 lakes · 11 rivers

Hydrology metrics for this exact territory

Stream length here

203,8km

Basins crossed

6

Max stream order

5

Max drainage

9 814km²

Discharge in basins

83,5m³/s

Mean precip.

647mm/an

Mean T°

11,6°C

Moisture idx

-0,36

Max snow

3%

Mean runoff

298mm/an

Mean elev. (basins)

1 435m

Watersheds crossing here

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

Human pressure

Pop. density

1hab/km²

Night light

0,3nW

Built-up

42,8%

Pesticides

67,2kg/km²

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