Lateral transport of soil carbon and land−atmosphere CO
 2
 flux induced by water erosion in China

Yao Yue; Jinren Ni; Philippe Ciais; Shilong Piao; T Wang; Mengtian Huang; Alistair G.L. Borthwick; Tianhong Li; Y Wang; Adrian Chappell; Oost K Van

doi:10.1073/pnas.1523358113

Lateral transport of soil carbon and land−atmosphere CO ₂ flux induced by water erosion in China

Yao Yue, Jinren Ni^*, Philippe Ciais, Shilong Piao, T Wang, Mengtian Huang, Alistair G.L. Borthwick, Tianhong Li, Y Wang, Adrian Chappell, Oost K Van

^*Corresponding author for this work

School of Engineering, Computing and Mathematics

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Abstract

Significance The role of soil erosion as a net sink or source of atmospheric CO 2 remains highly debated. This work quantifies national-scale land−atmosphere CO 2 fluxes induced by soil erosion. Severe water erosion in China has caused displacement of 180 ± 80 Mt C⋅y -1 of soil organic carbon during the last two decades, and the consequent land−atmosphere CO 2 flux from water erosion is a net CO 2 sink of 45 ± 25 Mt C⋅y -1 , equivalent to 8–37% of the terrestrial carbon sink previously assessed in China. This closes an important gap concerning large-scale estimation of lateral and vertical CO 2 fluxes from water erosion and highlights the importance of reducing uncertainty in assessing terrestrial carbon balance.

Original language	English
Pages (from-to)	6617-6622
Number of pages	0
Journal	Proceedings of the National Academy of Sciences
Volume	113
Issue number	24
Early online date	31 May 2016
DOIs	https://doi.org/10.1073/pnas.1523358113
Publication status	Published - 14 Jun 2016

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title = "Lateral transport of soil carbon and land−atmosphere CO 2 flux induced by water erosion in China",

abstract = "Significance The role of soil erosion as a net sink or source of atmospheric CO 2 remains highly debated. This work quantifies national-scale land−atmosphere CO 2 fluxes induced by soil erosion. Severe water erosion in China has caused displacement of 180 ± 80 Mt C⋅y -1 of soil organic carbon during the last two decades, and the consequent land−atmosphere CO 2 flux from water erosion is a net CO 2 sink of 45 ± 25 Mt C⋅y -1 , equivalent to 8–37% of the terrestrial carbon sink previously assessed in China. This closes an important gap concerning large-scale estimation of lateral and vertical CO 2 fluxes from water erosion and highlights the importance of reducing uncertainty in assessing terrestrial carbon balance. ",

author = "Yao Yue and Jinren Ni and Philippe Ciais and Shilong Piao and T Wang and Mengtian Huang and Borthwick, {Alistair G.L.} and Tianhong Li and Y Wang and Adrian Chappell and Van, {Oost K}",

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doi = "10.1073/pnas.1523358113",

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TY - JOUR

T1 - Lateral transport of soil carbon and land−atmosphere CO 2 flux induced by water erosion in China

AU - Yue, Yao

AU - Ni, Jinren

AU - Ciais, Philippe

AU - Piao, Shilong

AU - Wang, T

AU - Huang, Mengtian

AU - Borthwick, Alistair G.L.

AU - Li, Tianhong

AU - Wang, Y

AU - Chappell, Adrian

AU - Van, Oost K

PY - 2016/6/14

Y1 - 2016/6/14

N2 - Significance The role of soil erosion as a net sink or source of atmospheric CO 2 remains highly debated. This work quantifies national-scale land−atmosphere CO 2 fluxes induced by soil erosion. Severe water erosion in China has caused displacement of 180 ± 80 Mt C⋅y -1 of soil organic carbon during the last two decades, and the consequent land−atmosphere CO 2 flux from water erosion is a net CO 2 sink of 45 ± 25 Mt C⋅y -1 , equivalent to 8–37% of the terrestrial carbon sink previously assessed in China. This closes an important gap concerning large-scale estimation of lateral and vertical CO 2 fluxes from water erosion and highlights the importance of reducing uncertainty in assessing terrestrial carbon balance.

AB - Significance The role of soil erosion as a net sink or source of atmospheric CO 2 remains highly debated. This work quantifies national-scale land−atmosphere CO 2 fluxes induced by soil erosion. Severe water erosion in China has caused displacement of 180 ± 80 Mt C⋅y -1 of soil organic carbon during the last two decades, and the consequent land−atmosphere CO 2 flux from water erosion is a net CO 2 sink of 45 ± 25 Mt C⋅y -1 , equivalent to 8–37% of the terrestrial carbon sink previously assessed in China. This closes an important gap concerning large-scale estimation of lateral and vertical CO 2 fluxes from water erosion and highlights the importance of reducing uncertainty in assessing terrestrial carbon balance.

U2 - 10.1073/pnas.1523358113

DO - 10.1073/pnas.1523358113

M3 - Article

SN - 0027-8424

VL - 113

SP - 6617

EP - 6622

JO - Proceedings of the National Academy of Sciences

JF - Proceedings of the National Academy of Sciences

IS - 24

ER -

Lateral transport of soil carbon and land−atmosphere CO 2 flux induced by water erosion in China

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Lateral transport of soil carbon and land−atmosphere CO ₂ flux induced by water erosion in China