Ontologia

HydroBASINS lev08 watershed · #4080933300

Bassin de 大环江

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 3 administrative regions : Hechi, Qiandongnan Miao and Dong, Qiannan Buyei and Miao

Pfafstetter: 43666460

Sub-basin area

2 732,8km²

Upstream area

2 733,2km²

Discharge

61,95m³/s

Mean elev.

523m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de 龙江1133 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

3 dept-equivalent regions (GADM L2)

1 intersecting protected areas

  • South China Karst

    IUCN Not Applicable

    World Heritage Site (natural or mixed)

    163.80 km² overlap

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

Species present

1 425 distinct species · 3 007 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

3 007 obs · 35 cellules
Obs. / cellule
≥ 1 016
126–1 015
15–125
6–14
< 6

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

Ecological tissue

Sample of 36 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 大环江 : 33 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 30 interactions GloBI sur 4 types (connectance 4.8%, filtre Serrano α=0.2). 3 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
36
Interactions affichées
30
Connectance
0.048
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 421mm

Moisture idx (CMI)

0,15

Runoff

728mm/an

PET

1 203mm

AET

1 064mm

Mean slope

14,0°

Water table

462cm

Forest

60%

Crops

6%

Urban

2%

Protected

10%

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