Table 2 Summary of the variables used in this study: field data (FD1-2) and remote sensing (RS1-4) datasets; the last three columns indicate the assumed environmental significance of the data (see text for the rationale and references); r* = reflectance factor.

From: Predicting the co-invasion of two Asteraceae plant genera in post-mining landscapes using satellite remote sensing and airborne LiDAR

Category

/Group

No.

Acronym

Source/

resolution

Description

Unit

Habitat properties

Propagule pressure

Local climate

Field Data

FD1

1,2

nbsp.all

nbsp.nat

 

Number plant species of all (.all) and number of native plant species (.nat)

-

×

×

 

3,4

FRic.all

FRic.nat

 

Functional Richness for all plant species (.all) and only for the native plants (.nat)

-

×

  

5,6

SLA.all

SLA.nat

 

Community Weighted Mean Specific Leaf Area for all plant species (.all) and only for the native plants (.nat)

cm2 g− 1

×

 

×

7,8

SM.all

SM.nat

n.a.

Community Weighted Mean Seed Mass for all plant species (.all) and only for the native plants (.nat)

g

 

×

 

9,10

H.all

H.nat

 

Community Weighted Mean Maximal Height for all plant species (.all) and only for the native plants (.nat)

m

×

  

FD2

11

Succession

 

Major axis of the nonmetric multidimensional scaling (NMDS) of all plant species presence-absence data 27

-

×

×

×

Remote Sensing data

RS1

1

CHMmean

LiDAR

5 m

Average value in a 5 × 5 cell window of a 1-m resolution LiDAR Canopy Height Model

m

×

 

×

2

CHMsd

Standard deviation value in a 5 × 5 cell window of a 1-m resolution LiDAR Canopy Height Model

m

×

×

 

RS2

3

NDVI

Landsat 7

30 m

Normalized Difference Vegetation Index

-

×

 

×

4

LST

Land Surface Temperature

°C

  

×

RS3

5

Aerosols

Sentinel-2

60 m

Aerosols band (442 nm)

r*

 

×

×

6

Blue

Sentinel-2

10 m

Blue band (492 nm): soil and vegetation discrimination; chlorophyll and carotenoids absorption

r*

×

  

7

Green

Green band (559 nm): strongly reflected by green foliage

r*

×

  

8

Red

Red band (665 nm): strongly reflected by stressed and dead foliage; chlorophyll absorption

r*

×

  

9

RedEdge1

Sentinel-2

20 m

Red Edge band (704 nm): differentiates between vegetation types

r*

×

  

10

NIR

Sentinel-2

10 m

Near InfraRed band (833 nm): biomass content

r*

×

  

11

SWIR1

Sentinel-2

20 m

Short-Wave Infrared (1610 nm): moisture content of soil and vegetation

r*

×

  

RS4

12

TCDImean

Sentinel-2

10 m

Focal average value of the Tasseled Cap Disturbance Index in a 5 × 5 cell moving window

-

×

×

 

13

TCDIsd

Focal standard deviation value of the Tasseled Cap Disturbance Index in a 5 × 5 cell moving window

-

×

×

 

14

SeLImin

Focal minimal value of the Sentinel-2 leaf area Index in a 5 × 5 cell moving window

-

×

×

×

15

RaoQ_NDVI

Rao’s quadratic entropy index in a NDVI layer 5 × 5 cell moving window

-

×

  

16

RaoQ_NIRv

Rao’s quadratic entropy index in a NIRv layer 5 × 5 cell moving window

-

×

  
Back to article page