HydroBASINS lev08 watershed · #4080781040
Bassin de 兰江
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 : Hangzhou, Jinhua
Sub-basin area
1 210,4km²
Upstream area
19 496,7km²
Discharge
539,66m³/s
Mean elev.
220m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de 衢江1186 km²
- Bassin de 婺江373 km²
2 dept-equivalent regions (GADM L2)
- 876.1 km²72.5% of basin
- 332.8 km²27.5% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
222 distinct species · 301 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 39 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 兰江 : 32 espèces reliées par 41 interactions GloBI sur 5 types (connectance 5.5%, 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°
16,6°C
Annual rain
1 490mm
Moisture idx (CMI)
0,25
Runoff
815mm/an
PET
1 120mm
AET
1 031mm
Mean slope
11,5°
Water table
375cm
Forest
63%
Crops
16%
Urban
19%
Protected
1%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)