Ontologia

Commune · CHN

Tongnan

China

CwaTemperate, dry winter, hot summer(100 %)

Species observed

56

Observations

90

Area

1 602,7km²

Ecological tissue

Sample of 21 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 Tongnan : 19 espèces reliées par 20 interactions GloBI sur 4 types (connectance 9.5%, filtre Serrano α=0.2). 2 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
21
Interactions affichées
20
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

56 distinct species · 90 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

90 obs · 7 cellules
Obs. / cellule
≥ 38
38–37
9–37
5–8
< 5

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

Climate

Mean T°

18,2°C

Annual rain

1 145mm

Warmest m°

30,9°C

Coldest m°

3,9°C

Elevation: 293 m on average (min 237 m, max 490 m)

Bioclimatic detailsExpert
Annual mean temp.
18,2°C
Annual rain
1 145mm
Warmest month
30,9°C
Coldest month
3,9°C
Mean alt.
293m
Min
237m
Max
490m
Std. dev.
33m
Köppen-Geiger (dominant)
CwaTemperate, dry winter, hot summer(100 %)Temperate

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

18,9g/kg

Clay

29,5%

Sand

27,0%

Silt

43,4%

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

Dominant lithology: scGLiMaggregated to Chongqing

3 soil depths detailedExpert
0–5 cm
pH H₂O
6,8
Org. C
32,4g/kg
Clay
30,0%
Sand
26,9%
Silt
43,1%
5–15 cm
pH H₂O
6,9
Org. C
12,2g/kg
Clay
29,0%
Sand
27,3%
Silt
43,6%
15–30 cm
pH H₂O
6,8
Org. C
12,0g/kg
Clay
29,6%
Sand
26,9%
Silt
43,5%

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

Land cover

Forest21.1%
Crops56.8%
Built-up0.7%
Bare soil1.8%
Other (grassland, water…)19.6%

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

Hydrology13 basins · 3 lakes · 10 rivers

Hydrology metrics for this exact territory

Stream length here

362,5km

Lake surface here

7,35km²

Basins crossed

13

Max stream order

5

Max drainage

29 608km²

Discharge in basins

345,2m³/s

Mean precip.

1 028mm/an

Mean T°

17,8°C

Moisture idx

-0,03

Max snow

1%

Mean runoff

529mm/an

Mean elev. (basins)

311m

Watersheds crossing here

4 more basins

Lakes (3, top by area)

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

Human pressure

Pop. density

3hab/km²

Night light

0,8nW

Built-up

70,2%

Pesticides

75,8kg/km²

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