HydroBASINS lev08 watershed · #4080006940
Bassin · #4080006940
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 : Huludao, Qinhuangdao
Sub-basin area
17,2km²
Upstream area
17,3km²
Discharge
0,09m³/s
Mean elev.
13m
Species present
245 distinct species · 1 033 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 28 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 · #4080006940 : 21 espèces reliées par 37 interactions GloBI sur 3 types (connectance 9.8%, filtre Serrano α=0.2). 7 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°
9,8°C
Annual rain
657mm
Moisture idx (CMI)
-0,33
Runoff
149mm/an
PET
973mm
AET
560mm
Mean slope
1,1°
Water table
84cm
Forest
36%
Crops
99%
Urban
79%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)