Ontologia

HydroBASINS lev08 watershed · #4080989470

Bassin de Sông Chảy

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 4 administrative regions across 2 countries : Hoàng Su Phì, Vị Xuyên, Wenshan Zhuang and Miao, Xín Mần

Pfafstetter: 43682209

Sub-basin area

408km²

Upstream area

408,1km²

Discharge

17,84m³/s

Mean elev.

1 088m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Sông Chảy489 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

4 dept-equivalent regions (GADM L2)

1 intersecting protected areas

  • Tay Con Linh

    IUCN Not Reported

    Nature Reserve

    15.41 km² overlap

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

Species present

321 distinct species · 438 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

438 obs · 10 cellules
Obs. / cellule
≥ 285
285–284
40–284
13–39
< 13

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

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).

RègnesAnimalPlanteChampignonBacterie
RelationsPredationParasitismeSymbiosePollinisation
StatutEn dangerVulnérableProtégéeEndémique

Indicateurs du tissu écologique

Tissu écologique de Bassin de Sông Chảy : 27 espèces reliées par 26 interactions GloBI sur 5 types (connectance 5.2%, filtre Serrano α=0.2). 5 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
32
Interactions affichées
26
Connectance
0.052
Patrimoniales
0
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°

18,4°C

Annual rain

1 680mm

Moisture idx (CMI)

0,30

Runoff

1 352mm/an

PET

1 176mm

AET

987mm

Mean slope

19,9°

Water table

643cm

Forest

2%

Crops

10%

Urban

0%

Protected

0%

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