Ontologia

HydroBASINS lev08 watershed · #4081000340

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 8 administrative regions across 2 countries : Bát Xát, Bảo Thắng, Honghe Hani and Yi, Lào Cai, Sa Pa +3

Pfafstetter: 43684190

Sub-basin area

1 205,1km²

Upstream area

39 731,5km²

Discharge

550,85m³/s

Mean elev.

900m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Sông Hồng683 km²

▲ Receives from 2 basins

8 dept-equivalent regions (GADM L2)

2 intersecting protected areas

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

Species present

2 857 distinct species · 19 850 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

19 850 obs · 28 cellules
Obs. / cellule
≥ 7 796
1 072–7 795
233–1 071
32–232
< 32

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

Ecological tissue

Sample of 28 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 : 27 espèces reliées par 23 interactions GloBI sur 3 types (connectance 6.1%, filtre Serrano α=0.2). 1 bulle taxonomique (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
28
Interactions affichées
23
Connectance
0.061
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°

19,5°C

Annual rain

1 896mm

Moisture idx (CMI)

0,35

Runoff

1 002mm/an

PET

1 206mm

AET

1 038mm

Mean slope

17,7°

Water table

601cm

Forest

12%

Crops

5%

Urban

5%

Protected

21%

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