Commune · CHN
Hejiang
China
Species observed
1 128
Observations
3 911
Area
2 416,9km²
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 Hejiang : 5 espèces reliées par 4 interactions GloBI sur 3 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).
Species present
1 128 distinct species · 3 911 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
17,4°C
Annual rain
1 288mm
Warmest m°
29,9°C
Coldest m°
3,9°C
Elevation: 525 m on average (min 213 m, max 1 469 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
5,7
Org. C
25,3g/kg
Clay
27,5%
Sand
34,1%
Silt
38,3%
Average over 0-30 cm. Per-depth details in expert panel.
Dominant lithology: smGLiMaggregated to Luzhou
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)
Hydrology10 basins · 0 lakes · 23 rivers
Hydrology metrics for this exact territory
Stream length here
542,1km
Basins crossed
10
Max stream order
8
Max drainage
670 316km²
Discharge in basins
7 957,3m³/s
Mean precip.
1 099mm/an
Mean T°
17,1°C
Moisture idx
0,03
Max snow
3%
Mean runoff
604mm/an
Mean elev. (basins)
570m
Watersheds crossing here
- Bassin de 小槽河sub-area1 216,4 km²overlap954.85 km²40%
- Bassin de 赤水河sub-area898,5 km²overlap715.95 km²30%
- Bassin de 长江sub-area429,6 km²overlap290.46 km²12%
- Bassin de 龙溪河sub-area1 070 km²overlap235.09 km²10%
- Bassin de 习水河sub-area1 685,1 km²overlap126.69 km²5%
- Bassin de 大同河sub-area990,3 km²overlap68.14 km²3%
- Bassin de 大河溪sub-area417,9 km²overlap21.15 km²1%
- Bassin de 长江sub-area2,2 km²overlap2.18 km²0%
- Bassin de 笋溪河sub-area1 176,2 km²overlap1.94 km²0%
1 more basinssorted by overlap
Rivers / streams (23, ord ≥ 4)
- 小槽河ord 3len here104.92 km97%total108 km
- 长江ord 9len here78.86 km2%total3801 km
- 大槽河ord 3len here73.62 km100%total74 km
- 赤水河ord 6len here67.70 km9%total762 km
- 沙溪河ord 6len here23.84 km23%total105 km
- 习水河ord 4len here22.21 km11%total209 km
- 塘河ord 4len here17.41 km41%total43 km
- 大页坝河ord 2len here17.37 km100%total17 km
- 桐子溪ord 2len here16.52 km100%total17 km
- 墩溪河ord 1len here14.85 km76%total20 km
- 蟠龙溪ord 4len here14.23 km100%total14 km
- 福龙溪ord 3len here13.89 km100%total14 km
11 more river segmentssorted by Strahler order + length
- 识字河ord 3len here13.68 km100%total14 km
- 马哮河ord 2len here10.67 km100%total11 km
- 大桥河ord 2len here9.87 km22%total44 km
- 桂香沟ord 3len here9.48 km80%total12 km
- 喻嘴河ord 2len here8.16 km76%total11 km
- 大殿溪ord 2len here6.64 km100%total7 km
- 唐沟ord 2len here5.22 km100%total5 km
- 厚河ord 1len here4.66 km100%total5 km
- 双龙桥河ord 1len here3.99 km100%total4 km
- 三岔河ord 5len here3.48 km1%total599 km
- 大同河ord 4len here0.87 km1%total97 km
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
2hab/km²
Night light
0,2nW
Built-up
31,8%
Pesticides
76,9kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)