HydroBASINS lev08 watershed · #4080564060
Bassin de 大南川河
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 3 administrative regions : Haidong, Hainan Tibetan, Xining
Sub-basin area
576,5km²
Upstream area
9 217,4km²
Discharge
29,43m³/s
Mean elev.
2 782m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de 北川河598 km²
- Bassin de 湟水534 km²
3 dept-equivalent regions (GADM L2)
- 567.5 km²98.4% of basin
- 8.2 km²1.4% of basin
- 0.9 km²0.2% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 031 distinct species · 9 751 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 27 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).
Indicateurs du tissu écologique
Tissu écologique de Bassin de 大南川河 : 18 espèces reliées par 62 interactions GloBI sur 3 types (connectance 12.5%, filtre Serrano α=0.2). 14 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydroclimate (BasinATLAS lev08)
Mean T°
3,8°C
Annual rain
420mm
Moisture idx (CMI)
-0,51
Runoff
52mm/an
PET
872mm
AET
366mm
Mean slope
12,5°
Water table
456cm
Forest
35%
Crops
26%
Urban
22%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)