Ontologia

HydroBASINS lev08 watershed · #4080734260

Bassin de 达维河

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 : Ngawa Tibetan and Qiang, Ya'an

Pfafstetter: 43496604

Sub-basin area

1 763,1km²

Upstream area

1 763,1km²

Discharge

28,5m³/s

Mean elev.

4 008m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de 小金川156 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

2 dept-equivalent regions (GADM L2)

2 intersecting protected areas

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

Species present

647 distinct species · 10 394 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

10 394 obs · 36 cellules
Obs. / cellule
≥ 7 147
231–7 146
38–230
14–37
< 14

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

Ecological tissue

Sample of 17 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 达维河 : 11 espèces reliées par 27 interactions GloBI sur 3 types (connectance 14.2%, filtre Serrano α=0.2). 9 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
20
Interactions affichées
27
Connectance
0.142
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°

1,3°C

Annual rain

1 007mm

Moisture idx (CMI)

0,27

Runoff

515mm/an

PET

725mm

AET

645mm

Mean slope

28,3°

Water table

1 033cm

Forest

41%

Crops

3%

Urban

0%

Protected

15%

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