HydroBASINS lev08 watershed · #4080455890
Bassin de 永定河
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 : Beijing, Zhangjiakou
Sub-basin area
609,6km²
Upstream area
44 169,9km²
Discharge
30,5m³/s
Mean elev.
904m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de 妫水河1672 km²
- Bassin de 永定河307 km²
2 dept-equivalent regions (GADM L2)
- BeijingBeijing · China347.3 km²56.9% of basin
- 262.9 km²43.1% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
666 distinct species · 7 178 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 24 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 永定河 : 14 espèces reliées par 55 interactions GloBI sur 3 types (connectance 13.5%, filtre Serrano α=0.2). 15 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°
7,4°C
Annual rain
497mm
Moisture idx (CMI)
-0,48
Runoff
36mm/an
PET
959mm
AET
428mm
Mean slope
19,5°
Water table
699cm
Forest
71%
Crops
9%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)