Ontologia

Commune · CHN

Mian

China

CwaTemperate, dry winter, hot summer(62 %)

Species observed

923

Observations

2 982

Area

2 352,7km²

Ecological tissue

Sample of 17 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).

RègnesAnimalPlanteChampignonBacterie
RelationsPredationParasitismeSymbiosePollinisation
StatutEn dangerVulnérableProtégéeEndémique

Indicateurs du tissu écologique

Tissu écologique de Mian : 14 espèces reliées par 16 interactions GloBI sur 4 types (connectance 10.5%, filtre Serrano α=0.2). 4 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
18
Interactions affichées
16
Connectance
0.105
Patrimoniales
0
Plus dense que (national)0 %(top 100%)

Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).

Species present

923 distinct species · 2 982 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

2 982 obs · 18 cellules
Obs. / cellule
≥ 2 853
30–2 852
7–29
3–6
< 3

Source : GBIF — observations agrégées par hexagones 0.027° × 0.027° (~22km), filtre précision coordonnée < 10 km. Fond carte : OpenFreeMap · © OpenStreetMap.

Climate

Mean T°

11,8°C

Annual rain

1 253mm

Warmest m°

25,3°C

Coldest m°

-4,6°C

Elevation: 1 175 m on average (min 514 m, max 2 526 m)

Bioclimatic detailsExpert
Annual mean temp.
11,8°C
Annual rain
1 253mm
Warmest month
25,3°C
Coldest month
-4,6°C
Mean alt.
1 175m
Min
514m
Max
2 526m
Std. dev.
508m
Köppen-Geiger (dominant)
CwaTemperate, dry winter, hot summer(62 %)Temperate

CHELSA BIO 1-19 v2.1 · ETOPO DEM 60s · Köppen-Geiger 1991-2020 (Beck et al. 2018)

Soil & lithology

pH H₂O

6,4

Org. C

27,3g/kg

Clay

23,0%

Sand

30,5%

Silt

46,4%

Average over 0-30 cm. Per-depth details in expert panel.

Dominant lithology: scGLiMaggregated to Hanzhong

3 soil depths detailedExpert
0–5 cm
pH H₂O
6,4
Org. C
46,8g/kg
Clay
22,9%
Sand
30,6%
Silt
46,5%
5–15 cm
pH H₂O
6,4
Org. C
21,8g/kg
Clay
23,0%
Sand
30,4%
Silt
46,6%
15–30 cm
pH H₂O
6,4
Org. C
13,3g/kg
Clay
23,2%
Sand
30,6%
Silt
46,2%

SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)

Land cover

Forest60.1%
Crops12.1%
Built-up0.4%
Bare soil0.7%
Other (grassland, water…)26.7%

Copernicus Global Land Cover 100m (Buchhorn et al. 2020)

Hydrology14 basins · 1 lakes · 10 rivers

Hydrology metrics for this exact territory

Stream length here

352,6km

Lake surface here

0,10km²

Basins crossed

14

Max stream order

5

Max drainage

8 670km²

Discharge in basins

186,8m³/s

Mean precip.

859mm/an

Mean T°

11,8°C

Moisture idx

-0,11

Max snow

5%

Mean runoff

422mm/an

Mean elev. (basins)

1 225m

Watersheds crossing here

5 more basins

Lakes (1, top by area)

Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10

Human pressure

Pop. density

1hab/km²

Night light

0,4nW

Built-up

44,5%

Pesticides

76,4kg/km²

GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)