HydroBASINS lev08 watershed · #4080011920
Bassin de 九龙江（北港）
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 : Xiamen, Zhangzhou
Sub-basin area
532,2km²
Upstream area
532,2km²
Discharge
3,91m³/s
Mean elev.
44m
Species present
1 990 distinct species · 20 793 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 32 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 九龙江（北港） : 24 espèces reliées par 35 interactions GloBI sur 3 types (connectance 7.1%, filtre Serrano α=0.2). 8 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°
21,4°C
Annual rain
1 244mm
Moisture idx (CMI)
0,11
Runoff
558mm/an
PET
1 103mm
AET
984mm
Mean slope
3,6°
Water table
182cm
Forest
5%
Crops
57%
Urban
80%
Protected
6%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)