Ontologia

Commune · CHN

Si

China

CwaTemperate, dry winter, hot summer(100 %)

Species observed

77

Observations

108

Area

1 864,3km²

Ecological tissue

Sample of 13 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 Si : 10 espèces reliées par 12 interactions GloBI sur 2 types (connectance 15.4%, filtre Serrano α=0.2). 3 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
13
Interactions affichées
12
Connectance
0.154
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

77 distinct species · 108 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

108 obs · 16 cellules
Obs. / cellule
≥ 50
42–49
1–41
1–0
< 1

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

Climate

Mean T°

15,1°C

Annual rain

982mm

Warmest m°

31,1°C

Coldest m°

-3,5°C

Elevation: 20 m on average (min 15 m, max 45 m)

Bioclimatic detailsExpert
Annual mean temp.
15,1°C
Annual rain
982mm
Warmest month
31,1°C
Coldest month
-3,5°C
Mean alt.
20m
Min
15m
Max
45m
Std. dev.
3m
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

8,0

Org. C

8,4g/kg

Clay

33,2%

Sand

18,0%

Silt

48,8%

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

Dominant lithology: smGLiMaggregated to Suzhou

3 soil depths detailedExpert
0–5 cm
pH H₂O
8,0
Org. C
12,1g/kg
Clay
32,2%
Sand
18,2%
Silt
49,6%
5–15 cm
pH H₂O
8,0
Org. C
7,0g/kg
Clay
33,3%
Sand
17,8%
Silt
48,9%
15–30 cm
pH H₂O
8,1
Org. C
6,2g/kg
Clay
34,1%
Sand
17,9%
Silt
48,0%

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

Land cover

Forest1.7%
Crops77.8%
Built-up2.5%
Bare soil0.9%
Other (grassland, water…)17.0%

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

Hydrology8 basins · 1 lakes · 18 rivers

Hydrology metrics for this exact territory

Stream length here

289,5km

Lake surface here

1,09km²

Basins crossed

8

Max stream order

5

Max drainage

6 949km²

Discharge in basins

36,4m³/s

Mean precip.

742mm/an

Mean T°

15,2°C

Moisture idx

-0,33

Max snow

4%

Mean runoff

206mm/an

Mean elev. (basins)

22m

Watersheds crossing here

Lakes (1, top by area)

Rivers / streams (18, ord ≥ 4)

6 more river segments

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

Human pressure

Pop. density

3hab/km²

Night light

1,0nW

Built-up

251,1%

Pesticides

74,1kg/km²

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