Ontologia

Commune · CHN

Chen

China

CfaTemperate, no dry season, hot summer(99 %)

Species observed

160

Observations

231

Area

1 864,5km²

Ecological tissue

Sample of 20 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 Chen : 19 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 15 interactions GloBI sur 2 types (connectance 7.9%, filtre Serrano α=0.2). 1 bulle taxonomique (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
20
Interactions affichées
15
Connectance
0.079
Patrimoniales
1
Plus dense que (national)0 %(top 100%)

Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).

Species present

160 distinct species · 231 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

231 obs · 24 cellules
Obs. / cellule
≥ 129
18–128
3–17
2–2
< 2

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

Climate

Mean T°

17,6°C

Annual rain

1 905mm

Warmest m°

30,9°C

Coldest m°

2,3°C

Elevation: 523 m on average (min 114 m, max 1 608 m)

Bioclimatic detailsExpert
Annual mean temp.
17,6°C
Annual rain
1 905mm
Warmest month
30,9°C
Coldest month
2,3°C
Mean alt.
523m
Min
114m
Max
1 608m
Std. dev.
357m
Köppen-Geiger (dominant)
CfaTemperate, no dry season, hot summer(99 %)Temperate

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

Soil & lithology

pH H₂O

5,9

Org. C

26,8g/kg

Clay

28,7%

Sand

35,6%

Silt

35,7%

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

Dominant lithology: smGLiMaggregated to Chenzhou

3 soil depths detailedExpert
0–5 cm
pH H₂O
5,9
Org. C
40,1g/kg
Clay
28,2%
Sand
36,2%
Silt
35,6%
5–15 cm
pH H₂O
5,9
Org. C
23,6g/kg
Clay
28,4%
Sand
35,7%
Silt
35,9%
15–30 cm
pH H₂O
5,9
Org. C
16,7g/kg
Clay
29,5%
Sand
35,0%
Silt
35,5%

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

Land cover

Forest59.8%
Crops10.0%
Built-up1.1%
Bare soil0.6%
Other (grassland, water…)28.6%

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

Hydrology10 basins · 10 lakes · 7 rivers

Hydrology metrics for this exact territory

Stream length here

233,9km

Lake surface here

4,86km²

Basins crossed

10

Max stream order

5

Max drainage

7 110km²

Discharge in basins

136,9m³/s

Mean precip.

1 496mm/an

Mean T°

17,6°C

Moisture idx

0,22

Mean runoff

821mm/an

Mean elev. (basins)

416m

Watersheds crossing here

1 more basins

Lakes (10, top by area)

1 more lakes

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

Human pressure

Pop. density

3hab/km²

Night light

0,7nW

Built-up

105,5%

Pesticides

78,1kg/km²

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