Ontologia

HydroBASINS lev08 watershed · #4081060370

Bassin de Sông Hiếu

A watershed (drainage basin) is not a body of water — it is the land area where rainfall converges towards a single river that eventually reaches the sea (or an endorheic basin). Boundaries follow ridgelines.

Crosses 11 administrative regions : Anh Sơn, Con Cuông, Nghĩa Đàn, Như Thanh, Như Xuân +6

3% lakePfafstetter: 44104041

Sub-basin area

1 691,7km²

Upstream area

5 417,1km²

Discharge

144,54m³/s

Mean elev.

123m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Sông Lam349 km²

▲ Receives from 2 basins

11 dept-equivalent regions (GADM L2)

3 more

1 intersecting protected areas

  • Western Nghe An

    IUCN Not Applicable

    UNESCO-MAB Biosphere Reserve

    993.85 km² overlap

Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.

Species present

118 distinct species · 293 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

293 obs · 20 cellules
Obs. / cellule
≥ 209
20–208
5–19
3–4
< 3

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

Ecological tissue

Sample of 43 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 Bassin de Sông Hiếu : 38 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 40 interactions GloBI sur 4 types (connectance 4.4%, filtre Serrano α=0.2). 5 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
43
Interactions affichées
40
Connectance
0.044
Patrimoniales
2
Plus dense que (national)0 %(top 100%)

Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).

Hydroclimate (BasinATLAS lev08)

Mean T°

24,0°C

Annual rain

1 433mm

Moisture idx (CMI)

0,03

Runoff

892mm/an

PET

1 383mm

AET

1 031mm

Mean slope

5,9°

Water table

252cm

Forest

5%

Crops

15%

Urban

2%

Protected

0%

HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)