Ontologia

HydroBASINS lev08 watershed · #4081063540

Bassin de Sông Giăng

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 6 administrative regions across 2 countries : Anh Sơn, Con Cuông, Khamkheuth, Thanh Chương, Viengthong +1

Pfafstetter: 44104036

Sub-basin area

1 096,6km²

Upstream area

1 096,6km²

Discharge

25,93m³/s

Mean elev.

401m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Sông Lam54 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

6 dept-equivalent regions (GADM L2)

2 intersecting protected areas

  • Western Nghe An

    IUCN Not Applicable

    UNESCO-MAB Biosphere Reserve

    1072.30 km² overlap

  • Pu Mat

    IUCN II

    National Park

    397.39 km² overlap

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

Species present

461 distinct species · 1 641 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

1 641 obs · 14 cellules
Obs. / cellule
≥ 920
346–919
31–345
5–30
< 5

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

Ecological tissue

Sample of 19 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 Giăng : 16 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 15 interactions GloBI sur 2 types (connectance 8.8%, filtre Serrano α=0.2). 3 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
19
Interactions affichées
15
Connectance
0.088
Patrimoniales
1
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°

23,0°C

Annual rain

1 611mm

Moisture idx (CMI)

0,13

Runoff

826mm/an

PET

1 404mm

AET

1 040mm

Mean slope

15,5°

Water table

502cm

Forest

69%

Crops

8%

Urban

1%

Protected

38%

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