Ontologia

HydroBASINS lev08 watershed · #4080562670

Bassin de 千曲川

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 : Aoki, Chikuhoku, Chikuma, Matsumoto, Nagano +4

Pfafstetter: 41301270

Sub-basin area

774,1km²

Upstream area

2 792,2km²

Discharge

89,42m³/s

Mean elev.

787m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de 千曲川2351 km²

▲ Receives from 2 basins

9 dept-equivalent regions (GADM L2)

1 more

26 intersecting protected areas

  • Joshinetsukogen

    IUCN II

    National Park

    52.22 km² overlap

  • Asama

    IUCN IV

    National Wildlife Protection Area

    23.43 km² overlap

  • Hijiri yama kogen

    IUCN V

    Prefectural Natural Park

    9.10 km² overlap

  • Tonohara

    IUCN IV

    Prefectural Wildlife Protection Area

    6.64 km² overlap

  • Kanbadaira

    IUCN IV

    Prefectural Wildlife Protection Area

    4.23 km² overlap

  • Tokkosan

    IUCN V

    Local Environment Conservation Area(Nagano)

    3.23 km² overlap

  • Kyodaisan

    IUCN IV

    Prefectural Wildlife Protection Area

    2.96 km² overlap

  • Shibayama

    IUCN IV

    Prefectural Wildlife Protection Area

    2.44 km² overlap

  • Tarouyama

    IUCN V

    Local Environment Conservation Area(Nagano)

    1.73 km² overlap

17 more protected areas

  • Hijiriyama

    IUCN IV

    Prefectural Wildlife Protection Area

    1.01 km² overlap

  • Washibasan

    IUCN IV

    Prefectural Wildlife Protection Area

    0.72 km² overlap

  • Daihouji iizunayama

    IUCN V

    Local Environment Conservation Area(Nagano)

    0.66 km² overlap

  • Toishi jouato

    IUCN V

    Local Environment Conservation Area(Nagano)

    0.62 km² overlap

  • Azuma

    IUCN IV

    Prefectural Wildlife Protection Area

    0.62 km² overlap

  • Shunara touge

    IUCN V

    Local Environment Conservation Area(Nagano)

    0.45 km² overlap

  • Hijiri kogen

    IUCN IV

    Prefectural Wildlife Protection Area

    0.43 km² overlap

  • Yunomaru rengetsutsuji gunraku

    IUCN III

    National Natural Monument

    0.43 km² overlap

  • Senryuu shougunzuka

    IUCN V

    Local Environment Conservation Area(Nagano)

    0.35 km² overlap

  • Nagano daigaku yachoaigorin

    IUCN IV

    Prefectural Wildlife Protection Area

    0.28 km² overlap

  • Kanryuuji oomine

    IUCN V

    Local Environment Conservation Area(Nagano)

    0.24 km² overlap

  • Anrakuji-jourakuji

    IUCN V

    Local Environment Conservation Area(Nagano)

    0.14 km² overlap

  • Yonago

    IUCN IV

    Rare Population Protected Forest

    0.11 km² overlap

  • Daiunji

    IUCN V

    Local Environment Conservation Area(Nagano)

    0.10 km² overlap

  • Okami no mori

    IUCN V

    Local Environment Conservation Area(Nagano)

    0.10 km² overlap

  • Oyashiki

    IUCN V

    Local Environment Conservation Area(Nagano)

    0.04 km² overlap

  • Hioki Forest Hills

    IUCN Not Applicable

    OECM

    0.04 km² overlap

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

Species present

3 147 distinct species · 37 372 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

37 372 obs · 25 cellules
Obs. / cellule
≥ 6 897
2 683–6 896
1 609–2 682
1 126–1 608
< 1 126

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 千曲川 : 27 espèces reliées par 33 interactions GloBI sur 4 types (connectance 6.2%, filtre Serrano α=0.2). 6 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
33
Interactions affichées
33
Connectance
0.063
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°

10,0°C

Annual rain

1 233mm

Moisture idx (CMI)

0,19

Runoff

1 237mm/an

PET

967mm

AET

881mm

Mean slope

13,3°

Water table

414cm

Forest

71%

Crops

11%

Urban

27%

Protected

12%

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