Forest Ecosystem Reserve · jpn
Iidesan Shuhen
- Area
- 295 km²
- IUCN cat.
- Ib
- Year
- 1992
Overview
- Designation
- Forest Ecosystem Reserve
- IUCN category
- Ib · Zone de nature sauvage
Aire protégée pour la wilderness, faible accès humain
- Established
- 1992
- Managing authority
- Forestry Agency of Japan
Source : WDPA (UNEP-WCMC, World Database on Protected Areas).
Species present
726 distinct species · 2 654 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 6 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).
Indicateurs du tissu écologique
Tissu écologique de Iidesan Shuhen : 5 espèces reliées par 4 interactions GloBI sur 2 types (connectance 26.7%, filtre Serrano α=0.2). 1 bulle taxonomique (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydrology7 basins · 0 lakes · 23 rivers
Hydrology metrics for this exact territory
Stream length here
68,5km
Basins crossed
7
Max stream order
2
Max drainage
7 512km²
Discharge in basins
33,5m³/s
Mean precip.
1 790mm/an
Mean T°
10,2°C
Moisture idx
0,50
Max snow
36%
Mean runoff
991mm/an
Mean elev. (basins)
474m
Watersheds crossing here
- Bassin de 荒川sub-area1 105,9 km²overlap97.55 km²33%
- Bassin de 阿賀野川sub-area565,6 km²overlap80.40 km²27%
- Bassin de 加治川sub-area499,8 km²overlap51.67 km²17%
- Bassin de 胎内川sub-area223,5 km²overlap36.90 km²12%
- Bassin de 最上川sub-area2 144,7 km²overlap17.60 km²6%
- Bassin de 阿賀川sub-area2 913,6 km²overlap11.15 km²4%
- Bassin de 阿賀野川sub-area862,8 km²overlap0.20 km²0%
Rivers / streams (23, ord ≥ 4)
- 玉川ord 3len here12.90 km62%total21 km
- 孫左衛門川ord 1len here7.39 km100%total7 km
- 実川ord 3len here6.28 km20%total31 km
- 桧山沢ord 1len here4.71 km100%total5 km
- 梅花皮沢ord 1len here4.31 km100%total4 km
- 北股川ord 1len here3.88 km100%total4 km
- 裏川ord 3len here3.49 km29%total12 km
- 加治川ord 4len here3.10 km5%total68 km
- 白川ord 2len here2.56 km36%total7 km
- 足ノ松沢ord 2len here2.52 km58%total4 km
- 頼母木川ord 1len here2.30 km100%total2 km
- 赤石沢ord 1len here2.27 km100%total2 km
11 more river segmentssorted by Strahler order + length
- 胎内川ord 3len here1.86 km7%total28 km
- 矢沢ord 1len here1.62 km100%total2 km
- 追流沢ord 1len here1.51 km101%total2 km
- 大石川ord 2len here1.36 km7%total19 km
- 上の小俣沢ord 1len here1.25 km100%total1 km
- 黒松沢ord 2len here1.07 km41%total3 km
- 奥川ord 2len here1.06 km9%total12 km
- 左俣沢ord 1len here0.92 km101%total1 km
- 横川ord 3len here0.89 km4%total25 km
- 右俣沢ord 1len here0.69 km101%total1 km
- 御西沢ord 1len here0.55 km100%total1 km
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Location
Fond cartographique : OpenFreeMap · © OpenStreetMap contributors · Géométrie : nos sources (GADM/HydroBASINS/HydroLAKES/HydroRIVERS/WDPA)
- Centroid
- 37.83748, 139.67978
- Open in maps
- OpenStreetMap → · Satellite →
Species observed (Phase 2)
Listing species observed within this protected area requires the GBIF v2 partition × WDPA spatial overlay matview. Computing infrastructure pending.