HydroBASINS lev08 watershed · #4080685310
Bassin de 马尔曲
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 : Golog Tibetan, Ngawa Tibetan and Qiang
Sub-basin area
2 641,1km²
Upstream area
6 467,2km²
Discharge
88,7m³/s
Mean elev.
4 052m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de 马尔曲1962 km²
- Bassin de 玛柯河1864 km²
2 dept-equivalent regions (GADM L2)
- 2235.5 km²84.7% of basin
- 404.2 km²15.3% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
384 distinct species · 924 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 31 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 马尔曲 : 22 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 50 interactions GloBI sur 3 types (connectance 9.5%, filtre Serrano α=0.2). 11 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°
0,0°C
Annual rain
687mm
Moisture idx (CMI)
-0,09
Runoff
439mm/an
PET
764mm
AET
578mm
Mean slope
21,6°
Water table
659cm
Forest
16%
Crops
0%
Urban
0%
Protected
84%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)