Ontologia

Commune · CHN

Chengde Xiàn

China

DwaCold, dry winter, hot summer(88 %)

Species observed

493

Observations

992

Area

4 078,3km²

Ecological tissue

Sample of 20 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 Chengde Xiàn : 17 espèces reliées par 18 interactions GloBI sur 4 types (connectance 9.5%, filtre Serrano α=0.2). 3 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
20
Interactions affichées
18
Connectance
0.095
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

493 distinct species · 992 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

992 obs · 30 cellules
Obs. / cellule
≥ 798
44–797
3–43
2–2
< 2

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

Climate

Mean T°

8,0°C

Annual rain

572mm

Warmest m°

27,0°C

Coldest m°

-15,4°C

Elevation: 645 m on average (min 273 m, max 1 597 m)

Bioclimatic detailsExpert
Annual mean temp.
8,0°C
Annual rain
572mm
Warmest month
27,0°C
Coldest month
-15,4°C
Mean alt.
645m
Min
273m
Max
1 597m
Std. dev.
206m
Köppen-Geiger (dominant)
DwaCold, dry winter, hot summer(88 %)Cold

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

Soil & lithology

pH H₂O

7,2

Org. C

22,9g/kg

Clay

16,8%

Sand

42,5%

Silt

40,7%

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

Dominant lithology: paGLiMaggregated to Chengde

3 soil depths detailedExpert
0–5 cm
pH H₂O
7,2
Org. C
34,9g/kg
Clay
15,4%
Sand
43,2%
Silt
41,3%
5–15 cm
pH H₂O
7,2
Org. C
19,8g/kg
Clay
16,9%
Sand
42,7%
Silt
40,4%
15–30 cm
pH H₂O
7,3
Org. C
14,0g/kg
Clay
18,0%
Sand
41,6%
Silt
40,4%

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

Land cover

Forest45.9%
Crops13.1%
Built-up0.7%
Bare soil0.6%
Other (grassland, water…)39.8%

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

Hydrology12 basins · 0 lakes · 4 rivers

Hydrology metrics for this exact territory

Stream length here

283,8km

Basins crossed

12

Max stream order

6

Max drainage

32 900km²

Discharge in basins

101,2m³/s

Mean precip.

567mm/an

Mean T°

7,1°C

Moisture idx

-0,41

Max snow

3%

Mean runoff

93mm/an

Mean elev. (basins)

672m

Watersheds crossing here

3 more basins

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

Human pressure

Pop. density

1hab/km²

Night light

0,3nW

Built-up

64,6%

Pesticides

78,8kg/km²

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