Ontologia

HydroBASINS lev08 watershed · #4081058950

Bassin de แม่น้ำน่าน

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 across 2 countries : Chiang Kham, Chiang Klang, Khop, Pong, Pua +4

Pfafstetter: 44306996

Sub-basin area

897,4km²

Upstream area

897,5km²

Discharge

12,63m³/s

Mean elev.

564m

Administrative coverage

Hydrographic chain

▲ Receives from 0 basins

Source / headwater (no upstream basin)

9 dept-equivalent regions (GADM L2)

1 more
  • Thung Chang0.4 km² · 0.0%

2 intersecting protected areas

  • Phu Zang

    IUCN II

    National Park

    196.08 km² overlap

  • Doi Phachang

    IUCN Ia

    Wildlife Sanctuary

    33.25 km² overlap

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

Species present

486 distinct species · 2 620 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

2 620 obs · 15 cellules
Obs. / cellule
≥ 1 522
689–1 521
26–688
16–25
< 16

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

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).

RègnesAnimalPlanteChampignonBacterie
RelationsPredationParasitismeSymbiosePollinisation
StatutEn dangerVulnérableProtégéeEndémique

Indicateurs du tissu écologique

Tissu écologique de Bassin de แม่น้ำน่าน : 27 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 31 interactions GloBI sur 3 types (connectance 6.7%, filtre Serrano α=0.2). 4 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
31
Interactions affichées
31
Connectance
0.067
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°

24,0°C

Annual rain

1 375mm

Moisture idx (CMI)

-0,18

Runoff

424mm/an

PET

1 676mm

AET

1 013mm

Mean slope

11,8°

Water table

432cm

Forest

11%

Crops

16%

Urban

1%

Protected

26%

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