Ontologia

Commune · VNM

Nhữ Hán

Vietnam

CwaTemperate, dry winter, hot summer(100 %)

Species observed

8

Observations

9

Area

21,2km²

Partial data for this territory

Few observations recorded here. Real biodiversity is likely richer.

Ecological tissue

Sample of 2 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 Nhữ Hán : 2 espèces reliées par 1 interaction GloBI sur 1 type (connectance 100.0%, filtre Serrano α=0.2).

Espèces affichées
2
Interactions affichées
1
Connectance
1.000
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

8 distinct species · 9 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

9 obs · 1 cellules
Obs. / cellule
≥ 9
9–8
9–8
9–8
< 9

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

Climate

Mean T°

23,7°C

Annual rain

1 674mm

Warmest m°

31,1°C

Coldest m°

13,0°C

Elevation: 105 m on average (min 29 m, max 319 m)

Bioclimatic detailsExpert
Annual mean temp.
23,7°C
Annual rain
1 674mm
Warmest month
31,1°C
Coldest month
13,0°C
Mean alt.
105m
Min
29m
Max
319m
Std. dev.
90m
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

5,7

Org. C

21,3g/kg

Clay

35,3%

Sand

29,4%

Silt

35,3%

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

Dominant lithology: scGLiMaggregated to Yên Sơn

3 soil depths detailedExpert
0–5 cm
pH H₂O
5,7
Org. C
27,0g/kg
Clay
34,5%
Sand
30,3%
Silt
35,2%
5–15 cm
pH H₂O
5,7
Org. C
23,3g/kg
Clay
33,9%
Sand
30,1%
Silt
36,0%
15–30 cm
pH H₂O
5,7
Org. C
13,7g/kg
Clay
37,5%
Sand
27,7%
Silt
34,9%

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

Land cover

Forest56.2%
Crops16.4%
Built-up1.1%
Bare soil2.2%
Other (grassland, water…)24.1%

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

Hydrology2 basins · 1 lakes · 1 rivers

Hydrology metrics for this exact territory

Stream length here

0,9km

Lake surface here

0,22km²

Basins crossed

2

Max stream order

2

Max drainage

27 798km²

Discharge in basins

6,1m³/s

Mean precip.

1 773mm/an

Mean T°

23,0°C

Moisture idx

0,23

Mean runoff

953mm/an

Mean elev. (basins)

96m

Watersheds crossing here

Lakes (1, top by area)

Rivers / streams (1, ord ≥ 4)

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

Human pressure

Pop. density

2hab/km²

Built-up

108,8%

Pesticides

8,0kg/km²

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