Ontologia

HydroBASINS lev08 watershed · #4081041950

Bassin de ນຳ້ຊ່ວງ

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 : Pak Xeng, Phonxay, Viengkham, Viengthong

Pfafstetter: 44279804

Sub-basin area

2 311,2km²

Upstream area

2 311,2km²

Discharge

25,48m³/s

Mean elev.

895m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de ນຳ້ເຊັງ747 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

4 dept-equivalent regions (GADM L2)

  • Viengkham
    Louangphrabang · Laos
    1268.5 km²
    55.0% of basin
  • Phonxay
    Louangphrabang · Laos
    470.0 km²
    20.4% of basin
  • Pak Xeng
    Louangphrabang · Laos
    369.2 km²
    16.0% of basin
  • Viengthong
    Houaphan · Laos
    196.9 km²
    8.5% of basin

1 intersecting protected areas

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

Species present

284 distinct species · 2 061 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

2 061 obs · 18 cellules
Obs. / cellule
≥ 1 347
276–1 346
23–275
15–22
< 15

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

Ecological tissue

Sample of 8 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 ນຳ້ຊ່ວງ : 6 espèces reliées par 5 interactions GloBI sur 2 types (connectance 17.9%, filtre Serrano α=0.2). 2 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
8
Interactions affichées
5
Connectance
0.179
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°

21,3°C

Annual rain

1 560mm

Moisture idx (CMI)

0,05

Runoff

383mm/an

PET

1 485mm

AET

996mm

Mean slope

17,2°

Water table

582cm

Forest

10%

Crops

1%

Urban

0%

Protected

21%

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