Hyonosen-Ushiroyama-Nagisan
IUCN VQuasi National Park · 1969
488 km²
City · JPN
Yabu
Japan
CfaTemperate, no dry season, hot summer(88 %)
Species observed
1 224
Observations
5 400
Area
416km²
Ecological tissue
Not enough documented interactions to build a meaningful graph for this territory.
Species present
1 224 distinct species · 5 400 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
13,2°C
Annual rain
2 131mm
Warmest m°
28,1°C
Coldest m°
-3,4°C
Elevation: 424 m on average (min 48 m, max 1 321 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
13,2°C
Annual rain
2 131mm
Warmest month
28,1°C
Coldest month
-3,4°C
Mean alt.
424m
Min
48m
Max
1 321m
Std. dev.
229m
Köppen-Geiger (dominant)
CfaTemperate, no dry season, hot summer(88 %)Temperate
CHELSA BIO 1-19 v2.1 · ETOPO DEM 60s · Köppen-Geiger 1991-2020 (Beck et al. 2018)
Soil & lithology
pH H₂O
5,0
Org. C
73,4g/kg
Clay
28,3%
Sand
32,9%
Silt
38,8%
Average over 0-30 cm. Per-depth details in expert panel.
Dominant lithology: vbGLiM
3 soil depths detailed0-5cm / 5-15cm / 15-30cm × 5 propsExpert
0–5 cm
pH H₂O
5,0
Org. C
108,9g/kg
Clay
27,9%
Sand
32,9%
Silt
39,2%
5–15 cm
pH H₂O
5,0
Org. C
72,6g/kg
Clay
28,4%
Sand
32,8%
Silt
38,8%
15–30 cm
pH H₂O
5,1
Org. C
38,6g/kg
Clay
28,6%
Sand
33,1%
Silt
38,3%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest87.9%
Crops2.2%
Built-up0.8%
Bare soil0.1%
Other (grassland, water…)9.0%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology4 basins · 0 lakes · 26 rivers
Hydrology metrics for this exact territory
Stream length here
147,6km
Basins crossed
4
Max stream order
4
Max drainage
2 984km²
Discharge in basins
16,9m³/s
Mean precip.
1 889mm/an
Mean T°
12,8°C
Moisture idx
0,47
Max snow
21%
Mean runoff
1 132mm/an
Mean elev. (basins)
330m
Watersheds crossing here
Rivers / streams (26, ord ≥ 4)
- 八木川ord 3len here28.46 km100%total28 km
- 大屋川ord 4len here26.83 km100%total27 km
- 横行川ord 1len here8.79 km100%total9 km
- 明延川ord 2len here8.72 km100%total9 km
- 小佐川ord 2len here7.72 km100%total8 km
- 円山川ord 4len here6.49 km13%total51 km
- 米地川ord 1len here5.40 km100%total5 km
- 建屋川ord 2len here4.97 km100%total5 km
- 円山川(Maruyama-gawa)ord 4len here4.69 km81%total6 km
- 三谷川ord 2len here3.92 km94%total4 km
- 出合川ord 1len here3.88 km100%total4 km
- 若杉川ord 1len here3.48 km100%total3 km
14 more river segmentssorted by Strahler order + length
- 熊野川ord 2len here3.45 km100%total3 km
- 八木谷川ord 1len here3.15 km100%total3 km
- 佐治見川ord 1len here3.14 km100%total3 km
- 坂尻川ord 2len here3.10 km100%total3 km
- 畑川ord 1len here2.85 km100%total3 km
- 日畑川ord 1len here2.81 km77%total4 km
- 岩崎川ord 1len here2.74 km100%total3 km
- 大谷川ord 2len here2.45 km100%total2 km
- 餅耕地川ord 1len here2.39 km100%total2 km
- 柳川ord 1len here2.30 km100%total2 km
- 石和川ord 1len here1.96 km86%total2 km
- 神子畑川ord 2len here1.50 km9%total17 km
- 宮ノ下川ord 1len here1.28 km100%total1 km
- 葛畑川ord 1len here1.16 km100%total1 km
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
0hab/km²
Night light
0,2nW
Built-up
76,7%
Pesticides
46,7kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Protected areas13
IUCN IV · 7IUCN V · 6
Tajima sangaku
IUCN VPrefectural Natural Park · 1983
335 km²
Onzui chikusa
IUCN VPrefectural Natural Park · 1999
99 km²
Izushi itoi
IUCN VPrefectural Natural Park · 1996
77 km²
Eastern Chugoku Mountains
IUCN VGreen Corridor · 2007
62 km²
Hyonosen
IUCN IVPrefectural Wildlife Protection Area · 2022
27 km²
Complete list13 protected areas
- Hyonosen-Ushiroyama-NagisanQuasi National ParkIUCN V1969488 km²
- Tajima sangakuPrefectural Natural ParkIUCN V1983335 km²
- Onzui chikusaPrefectural Natural ParkIUCN V199999 km²
- Izushi itoiPrefectural Natural ParkIUCN V199677 km²
- Eastern Chugoku MountainsGreen CorridorIUCN V200762 km²
- HyonosenPrefectural Wildlife Protection AreaIUCN IV202227 km²
- HyonosenPrefectural Wildlife Protection AreaIUCN IV202222 km²
- SurugaminePrefectural Wildlife Protection AreaIUCN IV20148 km²
- Hachi kogenPrefectural Wildlife Protection AreaIUCN IV20155 km²
- Hyonosen・SannomaruBiocenosis Protected ForestIUCN IV20184 km²
- Yoka myokensanPrefectural Wildlife Protection AreaIUCN IV20142 km²
- Shikanosen Okuyamakochi ShitsugenshokubutsutoRare Population Protected ForestIUCN IV20180 km²
- Meiji gawaPrefectural Nature Conservation AreaIUCN V19720 km²
WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN