Ontologia

HydroBASINS lev08 watershed · #4081010570

Bassin de Ngòi Thia

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 9 administrative regions : Bắc Yên, Mù Căng Chải, Mường La, Nghĩa Lộ, Phù Yên +4

Pfafstetter: 43684140

Sub-basin area

1 580km²

Upstream area

1 580,2km²

Discharge

37,85m³/s

Mean elev.

942m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Sông Hồng2534 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

9 dept-equivalent regions (GADM L2)

1 more
  • Mù Căng Chải0.3 km² · 0.0%

1 intersecting protected areas

  • Na Hau

    IUCN Not Reported

    Nature Reserve

    87.63 km² overlap

Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.

Species present

81 distinct species · 214 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

214 obs · 22 cellules
Obs. / cellule
≥ 83
29–82
4–28
3–3
< 3

Source : GBIF — observations agrégées par hexagones 0.027° × 0.027° (~22km), filtre précision coordonnée < 10 km. Fond carte : OpenFreeMap · © OpenStreetMap.

Ecological tissue

Sample of 16 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).

RègnesAnimalPlanteChampignonBacterie
RelationsPredationParasitismeSymbiosePollinisation
StatutEn dangerVulnérableProtégéeEndémique

Indicateurs du tissu écologique

Tissu écologique de Bassin de Ngòi Thia : 15 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 11 interactions GloBI sur 4 types (connectance 8.1%, filtre Serrano α=0.2). 2 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
17
Interactions affichées
11
Connectance
0.081
Patrimoniales
2
Plus dense que (national)0 %(top 100%)

Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).

Hydroclimate (BasinATLAS lev08)

Mean T°

19,0°C

Annual rain

1 681mm

Moisture idx (CMI)

0,26

Runoff

758mm/an

PET

1 225mm

AET

971mm

Mean slope

20,3°

Water table

674cm

Forest

6%

Crops

25%

Urban

4%

Protected

0%

HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)