Ontologia

Prefecture City · CHN

Chengde

China

DwaCold, dry winter, hot summer(50 %)

Species observed

2 477

Observations

18 728

Area

39 492,5km²

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 Chengde : 25 espèces reliées par 49 interactions GloBI sur 3 types (connectance 9.3%, filtre Serrano α=0.2). 8 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
33
Interactions affichées
49
Connectance
0.093
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

2 477 distinct species · 18 728 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

18 728 obs · 337 cellules
Obs. / cellule
≥ 798
44–797
7–43
2–6
< 2

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

Climate

Mean T°

5,9°C

Annual rain

533mm

Warmest m°

25,5°C

Coldest m°

-17,8°C

Elevation: 941 m on average (min 142 m, max 2 076 m)

Bioclimatic detailsExpert
Annual mean temp.
5,9°C
Annual rain
533mm
Warmest month
25,5°C
Coldest month
-17,8°C
Mean alt.
941m
Min
142m
Max
2 076m
Std. dev.
370m
Köppen-Geiger (dominant)
DwaCold, dry winter, hot summer(50 %)Cold

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

Soil & lithology

pH H₂O

7,3

Org. C

24,9g/kg

Clay

17,1%

Sand

45,8%

Silt

37,1%

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

Dominant lithology: paGLiM

3 soil depths detailedExpert
0–5 cm
pH H₂O
7,3
Org. C
37,0g/kg
Clay
16,2%
Sand
46,3%
Silt
37,5%
5–15 cm
pH H₂O
7,3
Org. C
22,0g/kg
Clay
17,2%
Sand
45,9%
Silt
37,0%
15–30 cm
pH H₂O
7,3
Org. C
15,6g/kg
Clay
18,0%
Sand
45,2%
Silt
36,8%

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

Land cover

Forest38.2%
Crops16.9%
Built-up0.5%
Bare soil0.8%
Other (grassland, water…)43.6%

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

Hydrology76 basins · 15 lakes · 39 rivers

Hydrology metrics for this exact territory

Stream length here

3 099,2km

Lake surface here

15,00km²

Basins crossed

76

Max stream order

6

Max drainage

38 442km²

Discharge in basins

458,0m³/s

Mean precip.

515mm/an

Mean T°

5,3°C

Moisture idx

-0,43

Max snow

21%

Mean runoff

60mm/an

Mean elev. (basins)

915m

Watersheds crossing here

67 more basins

Lakes (15, top by area)

6 more lakes

Rivers / streams (39, ord ≥ 4)

27 more river segments

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

Human pressure

Pop. density

1hab/km²

Night light

0,3nW

Built-up

47,4%

Pesticides

75,8kg/km²

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

Sub-administrations10