Ontologia

Commune · CHN

Gan

China

CfaTemperate, no dry season, hot summer(100 %)

Species observed

425

Observations

1 072

Area

3 025,8km²

Ecological tissue

Sample of 6 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 Gan : 6 espèces reliées par 3 interactions GloBI sur 2 types (connectance 20.0%, filtre Serrano α=0.2).

Espèces affichées
6
Interactions affichées
3
Connectance
0.200
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

425 distinct species · 1 072 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

1 072 obs · 20 cellules
Obs. / cellule
≥ 801
155–800
11–154
4–10
< 4

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

Climate

Mean T°

19,4°C

Annual rain

1 813mm

Warmest m°

32,7°C

Coldest m°

3,4°C

Elevation: 271 m on average (min 100 m, max 888 m)

Bioclimatic detailsExpert
Annual mean temp.
19,4°C
Annual rain
1 813mm
Warmest month
32,7°C
Coldest month
3,4°C
Mean alt.
271m
Min
100m
Max
888m
Std. dev.
129m
Köppen-Geiger (dominant)
CfaTemperate, no dry season, 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

5,5

Org. C

20,6g/kg

Clay

27,7%

Sand

38,4%

Silt

33,9%

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

Dominant lithology: ssGLiMaggregated to Ganzhou

3 soil depths detailedExpert
0–5 cm
pH H₂O
5,5
Org. C
31,7g/kg
Clay
27,2%
Sand
38,9%
Silt
33,9%
5–15 cm
pH H₂O
5,5
Org. C
17,8g/kg
Clay
27,0%
Sand
38,7%
Silt
34,3%
15–30 cm
pH H₂O
5,5
Org. C
12,2g/kg
Clay
28,8%
Sand
37,6%
Silt
33,6%

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

Land cover

Forest60.8%
Crops12.2%
Built-up0.5%
Bare soil1.2%
Other (grassland, water…)25.3%

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

Hydrology14 basins · 4 lakes · 6 rivers

Hydrology metrics for this exact territory

Stream length here

378,9km

Lake surface here

24,13km²

Basins crossed

14

Max stream order

6

Max drainage

36 994km²

Discharge in basins

1 789,1m³/s

Mean precip.

1 553mm/an

Mean T°

18,7°C

Moisture idx

0,21

Mean runoff

840mm/an

Mean elev. (basins)

293m

Watersheds crossing here

5 more basins

Lakes (4, top by area)

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

Human pressure

Pop. density

2hab/km²

Night light

0,3nW

Built-up

46,5%

Pesticides

67,7kg/km²

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