Na Hau
IUCN Not ReportedNature Reserve · 2006
174 km²
District · VNM
Văn Yên
Vietnam
CwaTemperate, dry winter, hot summer(99 %)
Species observed
71
Observations
158
Area
1 396,7km²
Ecological tissue
Sample of 18 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 Văn Yên : 17 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 11 interactions GloBI sur 2 types (connectance 7.2%, filtre Serrano α=0.2). 1 bulle taxonomique (cascade genre/famille GloBI, ≥3 espèces).
Espèces affichées
18
Interactions affichées
11
Connectance
0.072
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
71 distinct species · 158 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
22,2°C
Annual rain
2 277mm
Warmest m°
29,5°C
Coldest m°
11,5°C
Elevation: 403 m on average (min 42 m, max 1 604 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
22,2°C
Annual rain
2 277mm
Warmest month
29,5°C
Coldest month
11,5°C
Mean alt.
403m
Min
42m
Max
1 604m
Std. dev.
300m
Köppen-Geiger (dominant)
CwaTemperate, dry winter, 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
5,4
Org. C
27,2g/kg
Clay
32,3%
Sand
30,5%
Silt
37,2%
Average over 0-30 cm. Per-depth details in expert panel.
Dominant lithology: smGLiM
3 soil depths detailed0-5cm / 5-15cm / 15-30cm × 5 propsExpert
0–5 cm
pH H₂O
5,4
Org. C
38,3g/kg
Clay
30,7%
Sand
31,6%
Silt
37,6%
5–15 cm
pH H₂O
5,4
Org. C
26,3g/kg
Clay
31,1%
Sand
31,1%
Silt
37,8%
15–30 cm
pH H₂O
5,5
Org. C
17,0g/kg
Clay
35,1%
Sand
28,8%
Silt
36,1%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest71.8%
Crops4.3%
Built-up0.1%
Bare soil0.8%
Other (grassland, water…)23.0%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology8 basins · 1 lakes · 4 rivers
Hydrology metrics for this exact territory
Stream length here
292,5km
Lake surface here
0,10km²
Basins crossed
8
Max stream order
6
Max drainage
47 031km²
Discharge in basins
1 049,6m³/s
Mean precip.
1 719mm/an
Mean T°
20,9°C
Moisture idx
0,24
Mean runoff
900mm/an
Mean elev. (basins)
579m
Watersheds crossing here
- Bassin de Sông Hồngsub-area682,8 km²overlap407.88 km²29%
- Bassin de Suối Tiênsub-area693,6 km²overlap354.27 km²25%
- Bassin de Sông Hồngsub-area279,4 km²overlap277.22 km²20%
- Bassin de Ngòi Thiasub-area1 580 km²overlap237.42 km²17%
- Bassin de Sông Hồngsub-area2 533,5 km²overlap113.83 km²8%
- Bassin de Sông Hồngsub-area1 529,7 km²overlap4.34 km²0%
- Bassin de Sông Chảysub-area2 328,5 km²overlap1.65 km²0%
- Bassin de Sông Chảysub-area806,8 km²overlap0.08 km²0%
Lakes (1, top by area)
Rivers / streams (4, ord ≥ 4)
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
1hab/km²
Night light
0,0nW
Built-up
14,2%
Pesticides
8,5kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Protected areas1
IUCN Not Reported · 1
WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN