Ontologia

Commune · VNM

Hải Nam

Vietnam

CwaTemperate, dry winter, hot summer(100 %)

Species observed

4

Observations

4

Area

7,8km²

Partial data for this territory

Few observations recorded here. Real biodiversity is likely richer.

Ecological tissue

Not enough documented interactions to build a meaningful graph for this territory.

Species present

4 distinct species · 4 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

4 obs · 1 cellules
Obs. / cellule
≥ 4
4–3
4–3
4–3
< 4

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

Climate

Mean T°

24,3°C

Annual rain

1 860mm

Warmest m°

31,2°C

Coldest m°

15,5°C

Elevation: 1 m on average (min 1 m, max 1 m)

Bioclimatic detailsExpert
Annual mean temp.
24,3°C
Annual rain
1 860mm
Warmest month
31,2°C
Coldest month
15,5°C
Mean alt.
1m
Min
1m
Max
1m
Std. dev.
0m
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

6,1

Org. C

26,2g/kg

Clay

35,3%

Sand

31,4%

Silt

33,4%

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

Dominant lithology: suGLiMaggregated to Hải Hậu

3 soil depths detailedExpert
0–5 cm
pH H₂O
6,0
Org. C
33,0g/kg
Clay
34,6%
Sand
31,3%
Silt
34,1%
5–15 cm
pH H₂O
6,1
Org. C
21,9g/kg
Clay
35,3%
Sand
31,2%
Silt
33,6%
15–30 cm
pH H₂O
6,1
Org. C
23,8g/kg
Clay
35,9%
Sand
31,7%
Silt
32,5%

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

Land cover

Forest1.0%
Crops54.4%
Built-up6.8%
Bare soil2.2%
Other (grassland, water…)35.5%

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

Hydrology2 basins · 0 lakes · 0 rivers

Hydrology metrics for this exact territory

Basins crossed

2

Max drainage

138 856km²

Discharge in basins

15,3m³/s

Mean precip.

1 698mm/an

Mean T°

24,4°C

Moisture idx

0,24

Mean runoff

884mm/an

Mean elev. (basins)

3m

Watersheds crossing here

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

Human pressure

Pop. density

10hab/km²

Night light

3,4nW

Built-up

679,7%

Pesticides

9,0kg/km²

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

Protected areas1

IUCN Not Applicable · 1🌊 Marine · 1

Red River Delta

IUCN Not Applicable

UNESCO-MAB Biosphere Reserve · 2004

1 680 km²

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