Ontologia

HydroBASINS lev08 watershed · #4080752700

Bassin de 西河

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 : Chengdu, Ya'an

Pfafstetter: 43496229

Sub-basin area

446,8km²

Upstream area

446,8km²

Discharge

10,97m³/s

Mean elev.

1 456m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de 南河381 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

2 dept-equivalent regions (GADM L2)

1 intersecting protected areas

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

Species present

486 distinct species · 1 233 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

1 233 obs · 12 cellules
Obs. / cellule
≥ 356
337–355
98–336
60–97
< 60

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

Ecological tissue

Sample of 37 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 西河 : 35 espèces reliées par 36 interactions GloBI sur 4 types (connectance 5.4%, filtre Serrano α=0.2). 2 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
37
Interactions affichées
36
Connectance
0.054
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°

13,2°C

Annual rain

1 176mm

Moisture idx (CMI)

0,15

Runoff

770mm/an

PET

994mm

AET

840mm

Mean slope

20,7°

Water table

654cm

Forest

14%

Crops

20%

Urban

7%

Protected

0%

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