Ontologia

Rivière· 50 segments

Sông Năng

Crosses 4 administrative regions : Ba Bể, Nguyên Bình, Nà Hang, Pác Nặm

rivière

Total length

87km

Max discharge

53m³/s

Max Strahler

5

Segments matched

50

River geography4 admin regions · 0 communes

Parent watershed

hybas-40809982702299 km²

4 administrative regions crossed (GADM L2)

  • Ba Bể
    Bắc Kạn · Vietnam
    66.7 km
    in this dpt
  • Nà Hang
    Tuyên Quang · Vietnam
    40.5 km
    in this dpt
  • Nguyên Bình
    Cao Bằng · Vietnam
    36.4 km
    in this dpt
  • Pác Nặm
    Bắc Kạn · Vietnam
    6.8 km
    in this dpt

4 intersecting protected areas

  • Na Hang

    IUCN IV

    Nature Reserve

  • Nui Pia Oac

    IUCN IV

    Nature Reserve

  • Ba Be

    IUCN Not Reported

    National Park

  • Ba Be

    IUCN Not Reported

    Wetland of International Importance (Ramsar Site)

1 page = 1 named river (aggregation of 50 HydroRIVERS v10 segments). Spatial join cached after first hit.

Species present

3 distinct species · 3 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 2 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 Sông Năng : 2 espèces reliées par 1 interaction GloBI sur 1 type (connectance 100.0%, filtre Serrano α=0.2).

Espèces affichées
2
Interactions affichées
1
Connectance
1.000
Patrimoniales
0
Plus dense que (national)0 %(top 100%)

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

Hydrology (HydroRIVERS v10)

Total length

87km

Max discharge

53,0m³/s

Max Strahler

5

Segments matched

50

HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.