HydroBASINS lev08 watershed · #4080530170
Bassin de 七星渠
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 : Alxa, Wuzhong, Zhongwei
Sub-basin area
876,8km²
Upstream area
276 582,9km²
Discharge
759,04m³/s
Mean elev.
1 289m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de 清水河1897 km²
- Bassin de 黄河392 km²
3 dept-equivalent regions (GADM L2)
- Zhongwei875.6 km²99.8% of basin
- 1.2 km²0.1% of basin
- Wuzhong0.5 km²0.1% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
153 distinct species · 282 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 29 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 七星渠 : 25 espèces reliées par 28 interactions GloBI sur 3 types (connectance 6.9%, filtre Serrano α=0.2). 4 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°
9,0°C
Annual rain
227mm
Moisture idx (CMI)
-0,79
Runoff
1mm/an
PET
1 108mm
AET
199mm
Mean slope
2,5°
Water table
332cm
Forest
1%
Crops
13%
Urban
7%
Protected
4%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)