Ontologia

HydroBASINS lev08 watershed · #4081057280

Bassin de Sông Lam

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 5 administrative regions : Con Cuông, Quế Phong, Quỳ Châu, Quỳ Hợp, Tương Dương

Pfafstetter: 44104056

Sub-basin area

894,6km²

Upstream area

894,6km²

Discharge

19,72m³/s

Mean elev.

465m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Sông Lam144 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

5 dept-equivalent regions (GADM L2)

2 intersecting protected areas

  • Western Nghe An

    IUCN Not Applicable

    UNESCO-MAB Biosphere Reserve

    891.90 km² overlap

  • Pu Huong

    IUCN IV

    Nature Reserve

    263.07 km² overlap

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

Species present

62 distinct species · 99 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

99 obs · 8 cellules
Obs. / cellule
≥ 57
57–56
10–56
4–9
< 4

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

Ecological tissue

Sample of 13 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 Lam : 12 espèces reliées par 12 interactions GloBI sur 5 types (connectance 13.2%, filtre Serrano α=0.2). 2 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
14
Interactions affichées
12
Connectance
0.132
Patrimoniales
0
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°

22,5°C

Annual rain

1 376mm

Moisture idx (CMI)

-0,01

Runoff

706mm/an

PET

1 395mm

AET

987mm

Mean slope

17,7°

Water table

584cm

Forest

28%

Crops

7%

Urban

0%

Protected

33%

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