Ontologia

HydroBASINS lev08 watershed · #4080015620

Bassin de Sông Hữu Trạch

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 12 administrative regions across 2 countries : A Lưới, Huế, Hòa Vang, Hương Thủy, Hương Trà +7

Pfafstetter: 44105380

Sub-basin area

1 709km²

Upstream area

1 709,4km²

Discharge

101,16m³/s

Mean elev.

275m

Administrative coverage

12 dept-equivalent regions (GADM L2)

4 more

4 intersecting protected areas

  • Bach Ma

    IUCN II

    National Park

    237.66 km² overlap

  • Sao La

    IUCN Not Reported

    Nature Reserve

    147.79 km² overlap

  • Ba Na - Nui Chua

    IUCN IV

    Nature Reserve

    6.42 km² overlap

  • Xe Xap

    IUCN VI

    National Protected Area

    0.90 km² overlap

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

Species present

1 555 distinct species · 6 193 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

6 193 obs · 35 cellules
Obs. / cellule
≥ 2 215
615–2 214
65–614
15–64
< 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 34 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 Hữu Trạch : 29 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 33 interactions GloBI sur 3 types (connectance 5.9%, filtre Serrano α=0.2). 5 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
34
Interactions affichées
33
Connectance
0.059
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°

24,4°C

Annual rain

2 484mm

Moisture idx (CMI)

0,43

Runoff

1 785mm/an

PET

1 421mm

AET

1 179mm

Mean slope

12,3°

Water table

448cm

Forest

60%

Crops

5%

Urban

8%

Protected

11%

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