Ontologia

HydroBASINS lev08 watershed · #4081062010

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 : Anh Sơn, Con Cuông, Thanh Chương, Tân Kỳ, Đô Lương

4% lakePfafstetter: 44104039

Sub-basin area

349,1km²

Upstream area

21 117,7km²

Discharge

418,46m³/s

Mean elev.

65m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Sông Lam108 km²

▲ Receives from 2 basins

5 dept-equivalent regions (GADM L2)

1 intersecting protected areas

  • Western Nghe An

    IUCN Not Applicable

    UNESCO-MAB Biosphere Reserve

    343.28 km² overlap

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

Species present

69 distinct species · 152 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

152 obs · 7 cellules
Obs. / cellule
≥ 69
69–68
26–68
12–25
< 12

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

Ecological tissue

Sample of 12 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 7 interactions GloBI sur 3 types (connectance 10.6%, filtre Serrano α=0.2).

Espèces affichées
12
Interactions affichées
7
Connectance
0.106
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°

24,5°C

Annual rain

1 497mm

Moisture idx (CMI)

0,05

Runoff

890mm/an

PET

1 422mm

AET

1 065mm

Mean slope

5,0°

Water table

224cm

Forest

0%

Crops

20%

Urban

8%

Protected

0%

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