Geographical skills

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Question 21

Table 1: Soil organic carbon (SOC) stock ( $ha−1\text{t~ha}^{-1}$ ) in an agroforestry plot compared to a conventional arable control plot (2008–2023)

Plot type	2008	2013	2018	2023
Agroforestry plot	42.3	45.8	51.2	58.7
Conventional arable control plot	41.5	39.1	37.4	35.2

Using Table 1, calculate how many tonnes per hectare ( $ha−1\text{t~ha}^{-1}$ ) higher the soil organic carbon (SOC) stock was in the agroforestry plot than the conventional arable control plot in 2018.

[1]

Geographical skills

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24

Question 21

Table 1: Soil organic carbon (SOC) stock ( $ha−1\text{t~ha}^{-1}$ ) in an agroforestry plot compared to a conventional arable control plot (2008–2023)

Plot type	2008	2013	2018	2023
Agroforestry plot	42.3	45.8	51.2	58.7
Conventional arable control plot	41.5	39.1	37.4	35.2

Using Table 1, calculate how many tonnes per hectare ( $ha−1\text{t~ha}^{-1}$ ) higher the soil organic carbon (SOC) stock was in the agroforestry plot than the conventional arable control plot in 2018.

[1]

Geographical skills

Question 21

Table 1: Soil organic carbon (SOC) stock ( $ha−1\text{t~ha}^{-1}$ ) in an agroforestry plot compared to a conventional arable control plot (2008–2023)

Markscheme

Geographical skills

Question 21

Table 1: Soil organic carbon (SOC) stock ( $ha−1\text{t~ha}^{-1}$ ) in an agroforestry plot compared to a conventional arable control plot (2008–2023)

Markscheme

Geographical skills

Question 21

Table 1: Soil organic carbon (SOC) stock (t ha−1\text{t~ha}^{-1}t ha−1) in an agroforestry plot compared to a conventional arable control plot (2008–2023)

Geographical skills Questions

Geographical skills

Question 21

Table 1: Soil organic carbon (SOC) stock (t ha−1\text{t~ha}^{-1}t ha−1) in an agroforestry plot compared to a conventional arable control plot (2008–2023)

Geographical skills Questions

Table 1: Soil organic carbon (SOC) stock ( $ha−1\text{t~ha}^{-1}$ ) in an agroforestry plot compared to a conventional arable control plot (2008–2023)

Table 1: Soil organic carbon (SOC) stock ( $ha−1\text{t~ha}^{-1}$ ) in an agroforestry plot compared to a conventional arable control plot (2008–2023)