Ontologia

HydroBASINS lev08 watershed · #4081022740

Bassin de Sông Hồng

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 3 administrative regions : Ba Vì, Lâm Thao, Việt Trì

Pfafstetter: 43683000

Sub-basin area

100,3km²

Upstream area

100 038km²

Discharge

2 213,92m³/s

Mean elev.

17m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Sông Hồng71 km²

▲ Receives from 2 basins

3 dept-equivalent regions (GADM L2)

1 intersecting protected areas

  • Den Hung

    IUCN V

    Cultural and Historical Site

    1.40 km² overlap

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

Species present

153 distinct species · 229 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

229 obs · 2 cellules
Obs. / cellule
≥ 222
222–221
222–221
222–221
< 222

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

Ecological tissue

Sample of 24 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 Hồng : 21 espèces reliées par 23 interactions GloBI sur 3 types (connectance 7.7%, filtre Serrano α=0.2). 4 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
25
Interactions affichées
23
Connectance
0.077
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°

23,3°C

Annual rain

1 652mm

Moisture idx (CMI)

0,19

Runoff

873mm/an

PET

1 340mm

AET

1 100mm

Mean slope

0,5°

Water table

24cm

Forest

0%

Crops

14%

Urban

80%

Protected

1%

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