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Table 1 Correlation among soil environmental factors and SR in different land uses

From: Soil moisture controls the spatio-temporal pattern of soil respiration under different land use systems in a semi-arid ecosystem of Delhi, India

Land use

 

SR

ST

SM

SMA

SC

SN

MFC

SR

1

0.10

0.91a

0.67b

0.20

0.10

ST

 

1

0.15

0.07

0.10

0.13

SM

  

1

0.64b

0.12

0.05

SMA

   

1

0.28

0.10

SC

    

1

0.92a

SN

     

1

PFC

SR

1

0.08

0.95a

0.36

0.11

0.02

ST

 

1

0.15

− 0.02

0.32

0.39

SM

  

1

0.41

− 0.01

− 0.10

SMA

   

1

0.4

0.28

SC

    

1

0.97a

SN

     

1

AF

SR

1

− 0.38

0.86a

0.67*

0.29

0.39

ST

 

1

− 0.44

− 0.16

− 0.40

− 0.49

SM

  

1

0.50

0.10

0.27

SMA

   

1

0.29

0.18

SC

    

1

0.90a

SN

     

1

VF

SR

1

0.70b

0.82a

0.71*

− 0.35

− 0.06

ST

 

1

0.34

0.33

− 0.22

− 0.19

SM

  

1

0.62b

− 0.41

− 0.01

SMA

   

1

0.11

− 0.29

SC

    

1

− 0.06

SN

     

1

  1. SR soil respiration (μmol m-2 s−1); ST soil temperature (°C) at 10 cm depth; SM soil moisture (%); SMA microbial activity (μg g−1 min−1); SC soil carbon (g kg−1); SN soil nitrogen (g kg−1); PFC Prosopis juliflora forest cover; MFC mixed forest cover; AF agriculture field; VF vegetable field
  2. aCorrelation is significant at the 0.01 level
  3. bCorrelation is significant at the 0.05 level