Ontologia

HydroBASINS lev08 watershed · #4080751720

Bassin de 大渡河

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 2 administrative regions : Garzê Tibetan, Ngawa Tibetan and Qiang

Pfafstetter: 43496597

Sub-basin area

763,7km²

Upstream area

54 496,5km²

Discharge

709,59m³/s

Mean elev.

3 526m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de 大渡河120 km²

▲ Receives from 2 basins

2 dept-equivalent regions (GADM L2)

1 intersecting protected areas

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

Species present

67 distinct species · 101 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

101 obs · 8 cellules
Obs. / cellule
≥ 44
44–43
16–43
11–15
< 11

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

Ecological tissue

Sample of 4 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 大渡河 : 4 espèces reliées par 2 interactions GloBI sur 2 types (connectance 33.3%, filtre Serrano α=0.2).

Espèces affichées
4
Interactions affichées
2
Connectance
0.333
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°

4,4°C

Annual rain

877mm

Moisture idx (CMI)

0,05

Runoff

493mm/an

PET

827mm

AET

643mm

Mean slope

33,2°

Water table

1 167cm

Forest

29%

Crops

2%

Urban

0%

Protected

31%

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