Commune · CHN
Biyang
China
Species observed
330
Observations
491
Area
2 820,1km²
Ecological tissue
Sample of 22 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 Biyang : 18 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 20 interactions GloBI sur 2 types (connectance 8.7%, filtre Serrano α=0.2). 4 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Species present
330 distinct species · 491 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
15,0°C
Annual rain
978mm
Warmest m°
30,4°C
Coldest m°
-3,2°C
Elevation: 197 m on average (min 81 m, max 701 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
CHELSA BIO 1-19 v2.1 · ETOPO DEM 60s · Köppen-Geiger 1991-2020 (Beck et al. 2018)
Soil & lithology
pH H₂O
7,0
Org. C
15,6g/kg
Clay
29,5%
Sand
27,6%
Silt
42,9%
Average over 0-30 cm. Per-depth details in expert panel.
Dominant lithology: suGLiMaggregated to Zhumadian
3 soil depths detailed0-5cm / 5-15cm / 15-30cm × 5 propsExpert
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology11 basins · 10 lakes · 10 rivers
Hydrology metrics for this exact territory
Stream length here
342,4km
Lake surface here
59,58km²
Basins crossed
11
Max stream order
4
Max drainage
2 816km²
Discharge in basins
28,5m³/s
Mean precip.
853mm/an
Mean T°
14,8°C
Moisture idx
-0,26
Max snow
3%
Mean runoff
284mm/an
Mean elev. (basins)
181m
Watersheds crossing here
- Bassin de 泌阳河sub-area1 699,4 km²overlap1328.16 km²47%
- Bassin de 汝河sub-area1 205 km²overlap503.14 km²18%
- Bassin de 象河sub-area338,3 km²overlap337.60 km²12%
- Basin #75650sub-area282,7 km²overlap282.56 km²10%
- Bassin de 比河sub-area664 km²overlap243.39 km²9%
- Bassin de 三夹河sub-area1 447 km²overlap48.87 km²2%
- Bassin de 淮河sub-area1 402,4 km²overlap35.56 km²1%
- Bassin de 澧河sub-area2 816,2 km²overlap34.57 km²1%
- Bassin de 臻头河sub-area1 860,3 km²overlap4.06 km²0%
2 more basinssorted by overlap
Lakes (10, top by area)
- Banqiao Shuikuarea37,5 km²avg depth18.0 m
- Songjiachang Shuikuarea14,1 km²avg depth9.4 m
- Huashan Shuikuarea2,3 km²avg depth2.3 m
- Shimen Shuikuarea2 km²avg depth3.4 m
- 老河水库area1,1 km²avg depth2.3 m
- Lac 1374029area0,8 km²avg depth3.1 m
- Lac 1373832area0,8 km²avg depth3.4 m
- Lac 1373892area0,6 km²avg depth3.3 m
- Lac 1373940area0,4 km²avg depth3.5 m
1 more lakes
Rivers / streams (10, ord ≥ 4)
- 泌阳河ord 4len here105.45 km60%total177 km
- 汝河ord 5len here63.69 km11%total563 km
- 白露河ord 4len here54.61 km20%total277 km
- 象河ord 3len here41.41 km100%total41 km
- 比河ord 3len here28.36 km34%total83 km
- 小河ord 4len here18.38 km8%total244 km
- 石子河ord 2len here18.10 km100%total18 km
- 小河支流ord 2len here7.24 km100%total7 km
- 二道河ord 4len here3.38 km2%total143 km
- 五里河ord 3len here1.80 km2%total95 km
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
2hab/km²
Night light
0,6nW
Built-up
178,3%
Pesticides
78,9kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)