HydroBASINS lev08 watershed · #4080689230
Bassin de 麻尔曲
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
2 501,5km²
Upstream area
10 605,3km²
Discharge
152,55m³/s
Mean elev.
3 899m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de 马尔曲2641 km²
- Bassin de 热尔卡河1636 km²
2 dept-equivalent regions (GADM L2)
- 2492.0 km²99.7% of basin
- 8.0 km²0.3% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
141 distinct species · 533 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 29 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 麻尔曲 : 26 espèces reliées par 30 interactions GloBI sur 3 types (connectance 6.9%, filtre Serrano α=0.2). 4 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°
1,2°C
Annual rain
728mm
Moisture idx (CMI)
-0,10
Runoff
450mm/an
PET
821mm
AET
612mm
Mean slope
22,3°
Water table
736cm
Forest
29%
Crops
1%
Urban
0%
Protected
95%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)