Commune · CHN
Gannan
China
Species observed
135
Observations
277
Area
4 784,7km²
Ecological tissue
Sample of 24 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 Gannan : 19 espèces reliées par 29 interactions GloBI sur 3 types (connectance 10.5%, filtre Serrano α=0.2). 5 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
135 distinct species · 277 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
3,4°C
Annual rain
486mm
Warmest m°
26,9°C
Coldest m°
-25,0°C
Elevation: 195 m on average (min 157 m, max 336 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
7,4
Org. C
22,6g/kg
Clay
30,1%
Sand
34,7%
Silt
35,2%
Average over 0-30 cm. Per-depth details in expert panel.
Dominant lithology: suGLiMaggregated to Qiqihar
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)
Hydrology16 basins · 23 lakes · 5 rivers
Hydrology metrics for this exact territory
Stream length here
325,3km
Lake surface here
52,32km²
Basins crossed
16
Max stream order
7
Max drainage
109 983km²
Discharge in basins
274,9m³/s
Mean precip.
454mm/an
Mean T°
2,1°C
Moisture idx
-0,41
Max snow
25%
Mean runoff
102mm/an
Mean elev. (basins)
231m
Watersheds crossing here
- Bassin de 黄篙沟sub-area1 527,9 km²overlap902.94 km²19%
- Bassin de 音河sub-area2 635 km²overlap750.52 km²16%
- Bassin de 阿伦河sub-area707,6 km²overlap696.79 km²15%
- Bassin de 阿伦河sub-area1 011,6 km²overlap468.82 km²10%
- Basin #90410sub-area469,7 km²overlap405.83 km²8%
- Basin #84070sub-area394,5 km²overlap310.96 km²6%
- Basin #90400sub-area540,5 km²overlap304.98 km²6%
- Bassin de 诺敏河sub-area1 254,3 km²overlap275.97 km²6%
- Bassin de 雅鲁河sub-area2 528,1 km²overlap208.00 km²4%
7 more basinssorted by overlap
- Bassin de 嫩江sub-area722,4 km²overlap198.81 km²4%
- Basin #93850sub-area1 276,9 km²overlap157.66 km²3%
- Bassin de 嫩江sub-area261,7 km²overlap74.32 km²2%
- Bassin de 格泥河sub-area445,1 km²overlap12.91 km²0%
- Basin #92590sub-area226,4 km²overlap11.86 km²0%
- Bassin de 阿伦河sub-area12,3 km²overlap2.29 km²0%
- Bassin de 嫩江sub-area295,9 km²overlap2.06 km²0%
Lakes (23, top by area)
- Yinhe Shuikuarea23,8 km²avg depth7.8 m
- Taipinghu Shuikuarea9,5 km²avg depth6.2 m
- Lake #68660area5,3 km²avg depth1.4 m
- 四方山水库area3,2 km²avg depth2.8 m
- Lake #68559area1,8 km²avg depth0.8 m
- Lake #68322area1 km²avg depth3.9 m
- Lac 1348094area0,7 km²avg depth1.8 m
- Lac 1348929area0,7 km²avg depth1.4 m
- Lac 1346708area0,6 km²avg depth3.2 m
14 more lakes
- Lac 1347026area0,6 km²avg depth3.8 m
- Lac 1347677area0,6 km²avg depth3.0 m
- Lac 1348409area0,6 km²avg depth1.2 m
- Lac 1347423area0,5 km²avg depth2.4 m
- Lac 1348271area0,5 km²avg depth1.6 m
- Lac 1346999area0,5 km²avg depth2.6 m
- Lac 1345992area0,4 km²avg depth2.3 m
- Lac 1348512area0,4 km²avg depth1.4 m
- Lac 1348478area0,4 km²avg depth1.4 m
- Lac 1348928area0,4 km²avg depth1.4 m
- Lac 1345963area0,4 km²avg depth1.9 m
- Lac 1346882area0,3 km²avg depth3.0 m
- Lac 1346824area0,2 km²avg depth2.0 m
- Lac 1348562area0,1 km²avg depth1.0 m
Rivers / streams (5, ord ≥ 4)
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
0hab/km²
Night light
0,1nW
Built-up
60,1%
Pesticides
77,6kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)