Table 2 Soil moisture and GHG emission correlations and thresholds

Cropland

European

PD

PD

P

40%

60%

80%

²¹

European

N/A

N/A

P

N/A

N/A

75%

⁸³

North America

PD

P

P

40%

80%

80%

⁸⁴

USA

N/A

N/A

P

N/A

N/A

>80%

¹⁸⁵

USA

N/A

PD

PD

N/A

72–94%

63–85%

¹⁸⁶

USA

N/A

N/A

P

N/A

N/A

60–90%

¹⁸⁷

North America

PD

N/A

N/A

60%

N/A

N/A

¹⁸⁸

East Asia

N/A

P

PD

N/A

99%

78–85%

⁸⁶

Forest

European

PD

P

P

40%

80%

80%

²¹

North America

N/A

N/A

PD

N/A

N/A

60%

¹⁸⁹

East Asia

PD

TR

PD

70–90%

50–70%

70–90%

¹⁹⁰

Grassland

European

PD

PD

P

40%

60%

80%

²¹

East Asia

N/A

N/A

P

N/A

N/A

>73%

¹⁹¹

East Asia

PD

N/A

PD

50 %

N/A

50 %

⁸⁸

Wetland

European

PD

P

P

40%

95%

80%

²¹