Ontologia

Prefecture City · CHN

Handan

China

BSkArid, steppe, cold(59 %)

Species observed

853

Observations

2 380

Area

12 057,7km²

Ecological tissue

Sample of 38 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 Handan : 34 espèces reliées par 39 interactions GloBI sur 3 types (connectance 5.5%, filtre Serrano α=0.2). 4 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
38
Interactions affichées
39
Connectance
0.056
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

853 distinct species · 2 380 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

2 380 obs · 105 cellules
Obs. / cellule
≥ 263
35–262
9–34
3–8
< 3

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

Climate

Mean T°

13,7°C

Annual rain

573mm

Warmest m°

30,9°C

Coldest m°

-6,5°C

Elevation: 220 m on average (min 32 m, max 1 569 m)

Bioclimatic detailsExpert
Annual mean temp.
13,7°C
Annual rain
573mm
Warmest month
30,9°C
Coldest month
-6,5°C
Mean alt.
220m
Min
32m
Max
1 569m
Std. dev.
284m
Köppen-Geiger (dominant)
BSkArid, steppe, cold(59 %)Arid

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

Soil & lithology

pH H₂O

7,8

Org. C

11,7g/kg

Clay

23,9%

Sand

30,4%

Silt

45,7%

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

Dominant lithology: scGLiM

3 soil depths detailedExpert
0–5 cm
pH H₂O
7,7
Org. C
16,7g/kg
Clay
22,8%
Sand
31,1%
Silt
46,1%
5–15 cm
pH H₂O
7,8
Org. C
10,6g/kg
Clay
23,9%
Sand
30,5%
Silt
45,6%
15–30 cm
pH H₂O
7,8
Org. C
7,9g/kg
Clay
25,0%
Sand
29,7%
Silt
45,3%

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

Land cover

Forest8.3%
Crops53.1%
Built-up4.3%
Bare soil2.5%
Other (grassland, water…)31.8%

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

Hydrology35 basins · 10 lakes · 23 rivers

Hydrology metrics for this exact territory

Stream length here

1 255,5km

Lake surface here

31,49km²

Basins crossed

35

Max stream order

6

Max drainage

35 754km²

Discharge in basins

137,4m³/s

Mean precip.

558mm/an

Mean T°

12,9°C

Moisture idx

-0,52

Max snow

2%

Mean runoff

42mm/an

Mean elev. (basins)

234m

Watersheds crossing here

26 more basins

Lakes (10, top by area)

1 more lakes

Rivers / streams (23, ord ≥ 4)

11 more river segments

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

Human pressure

Pop. density

6hab/km²

Night light

1,8nW

Built-up

435,1%

Pesticides

71,1kg/km²

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

Sub-administrations15