Ontologia

Commune · CHN

Changtu

China

DwaCold, dry winter, hot summer(100 %)

Species observed

181

Observations

341

Area

4 299,1km²

Ecological tissue

Sample of 36 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 Changtu : 31 espèces reliées par 35 interactions GloBI sur 4 types (connectance 5.3%, filtre Serrano α=0.2). 6 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
37
Interactions affichées
35
Connectance
0.053
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

181 distinct species · 341 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

341 obs · 21 cellules
Obs. / cellule
≥ 214
18–213
7–17
1–6
< 1

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

Climate

Mean T°

7,3°C

Annual rain

613mm

Warmest m°

27,6°C

Coldest m°

-19,2°C

Elevation: 129 m on average (min 69 m, max 352 m)

Bioclimatic detailsExpert
Annual mean temp.
7,3°C
Annual rain
613mm
Warmest month
27,6°C
Coldest month
-19,2°C
Mean alt.
129m
Min
69m
Max
352m
Std. dev.
39m
Köppen-Geiger (dominant)
DwaCold, dry winter, hot summer(100 %)Cold

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

Soil & lithology

pH H₂O

7,4

Org. C

15,3g/kg

Clay

22,8%

Sand

40,5%

Silt

36,7%

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

Dominant lithology: paGLiMaggregated to Tieling

3 soil depths detailedExpert
0–5 cm
pH H₂O
7,4
Org. C
21,2g/kg
Clay
22,0%
Sand
41,4%
Silt
36,6%
5–15 cm
pH H₂O
7,4
Org. C
12,8g/kg
Clay
22,7%
Sand
40,5%
Silt
36,8%
15–30 cm
pH H₂O
7,4
Org. C
11,7g/kg
Clay
23,8%
Sand
39,6%
Silt
36,7%

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

Land cover

Forest10.9%
Crops54.3%
Built-up1.5%
Bare soil1.3%
Other (grassland, water…)32.1%

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

Hydrology12 basins · 9 lakes · 5 rivers

Hydrology metrics for this exact territory

Stream length here

481,5km

Lake surface here

7,56km²

Basins crossed

12

Max stream order

7

Max drainage

157 718km²

Discharge in basins

213,7m³/s

Mean precip.

611mm/an

Mean T°

6,8°C

Moisture idx

-0,34

Max snow

10%

Mean runoff

100mm/an

Mean elev. (basins)

134m

Watersheds crossing here

3 more basins

Lakes (9, 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

146,6%

Pesticides

78,1kg/km²

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