Table 2 Percentage percent contribution and permutation importance of environment variables.

From: Investigation of the impact of diverse climate conditions on the cultivation suitability of Cinnamomum cassia using the MaxEnt model, HPLC and chemometric methods in China

Variable

Description

Percent contribution(%)

Permutation importance (%)

Units

bio_18

Precipitation of Warmest Quarter

60.5

26.8

mm

bio_4

Temperature Seasonality

19.2

34.6

t_clay

Topsoil clay content

4.5

1.7

% weight

bio_14

Precipitation of Driest Month

3.7

4

mm

awc_class

Soil available water content

2.3

2.5

1

s_oc

Substrate soil organic carbon

2.2

1.2

% weight

bio_15

Precipitation Seasonality

2.1

1.1

mm

bio_2

Mean Diurnal Range

2

10.7

1

bio_11

Mean Temperature of Coldest Quarter

1.3

4.6

slope

Slope

0.9

1

°

t_caco3

Carbonate or lime content

0.4

0.3

%

elev

Elevation

0.3

2.7

m

aspect

Aspect

0.2

0.5

°

t_oc

Topsoil organic carbon

0.2

1.6

% weight

bio_5

Max Temperature of Warmest Month

0.2

6.8

t_sand

Capacity of the wind

0.1

0.1

%

  1. The topsoil was 0–30 cm, and the substrate soil was 30–100 cm.