Ontologia

Commune · CHN

Nan

China

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

Species observed

237

Observations

270

Area

1 344,7km²

Ecological tissue

Sample of 15 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 Nan : 13 espèces reliées par 12 interactions GloBI sur 3 types (connectance 11.4%, filtre Serrano α=0.2). 2 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
15
Interactions affichées
12
Connectance
0.114
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

237 distinct species · 270 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

270 obs · 6 cellules
Obs. / cellule
≥ 133
133–132
106–132
13–105
< 13

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

Climate

Mean T°

17,8°C

Annual rain

1 531mm

Warmest m°

32,0°C

Coldest m°

1,4°C

Elevation: 28 m on average (min 21 m, max 35 m)

Bioclimatic detailsExpert
Annual mean temp.
17,8°C
Annual rain
1 531mm
Warmest month
32,0°C
Coldest month
1,4°C
Mean alt.
28m
Min
21m
Max
35m
Std. dev.
2m
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

6,7

Org. C

24,5g/kg

Clay

26,6%

Sand

25,5%

Silt

47,9%

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

Dominant lithology: smGLiMaggregated to Yiyang

3 soil depths detailedExpert
0–5 cm
pH H₂O
6,6
Org. C
27,2g/kg
Clay
26,5%
Sand
25,3%
Silt
48,2%
5–15 cm
pH H₂O
6,7
Org. C
16,9g/kg
Clay
26,8%
Sand
25,4%
Silt
47,9%
15–30 cm
pH H₂O
6,8
Org. C
29,3g/kg
Clay
26,5%
Sand
25,7%
Silt
47,8%

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

Land cover

Forest10.6%
Crops55.7%
Built-up1.4%
Bare soil2.5%
Other (grassland, water…)29.8%

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

Human pressure

Pop. density

4hab/km²

Night light

0,2nW

Built-up

142,2%

Pesticides

70,6kg/km²

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

Protected areas1

IUCN Ia · 1

Dong dongting hu

IUCN Ia

Wetland of International Importance (Ramsar Site) · 1992

1 900 km²

WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN